<?xml version="1.0" encoding="us-ascii"?>
<!-- DFIN ActiveDisclosure(SM) XBRL Schema Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2022-11-10T20:34:54.6732468+00:00 -->
<!-- Version            : 5.0.1.753 -->
<!-- Package ID         : 63aeccb538fc415cbba0445f39de5586 -->
<!-- Copyright (c) 2022 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<xsd:schema xmlns:dei="http://xbrl.sec.gov/dei/2022" xmlns:us-types="http://fasb.org/us-types/2022" xmlns:stpr="http://xbrl.sec.gov/stpr/2022" xmlns:srt-types="http://fasb.org/srt-types/2022" xmlns:sic="http://xbrl.sec.gov/sic/2022" xmlns:watt="http://www.energous.com/20220930" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:srt="http://fasb.org/srt/2022" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:us-gaap="http://fasb.org/us-gaap/2022" xmlns:naics="http://xbrl.sec.gov/naics/2022" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:country="http://xbrl.sec.gov/country/2022" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:currency="http://xbrl.sec.gov/currency/2022" xmlns:exch="http://xbrl.sec.gov/exch/2022" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.energous.com/20220930" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance" />
  <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/linkbase" />
  <xsd:import schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" namespace="http://xbrl.org/2005/xbrldt" />
  <xsd:import schemaLocation="https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd" namespace="http://xbrl.org/2020/extensible-enumerations-2.0" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/country/2022/country-2022.xsd" namespace="http://xbrl.sec.gov/country/2022" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/currency/2022/currency-2022.xsd" namespace="http://xbrl.sec.gov/currency/2022" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/dei/2022/dei-2022.xsd" namespace="http://xbrl.sec.gov/dei/2022" />
  <xsd:import schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd" namespace="http://www.xbrl.org/dtr/type/2020-01-21" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/exch/2022/exch-2022.xsd" namespace="http://xbrl.sec.gov/exch/2022" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/role/negated" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/role/net" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/naics/2022/naics-2022.xsd" namespace="http://xbrl.sec.gov/naics/2022" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/sic/2022/sic-2022.xsd" namespace="http://xbrl.sec.gov/sic/2022" />
  <xsd:import schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd" namespace="http://fasb.org/srt/2022" />
  <xsd:import schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-roles-2022.xsd" namespace="http://fasb.org/srt-roles/2022" />
  <xsd:import schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-types-2022.xsd" namespace="http://fasb.org/srt-types/2022" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/stpr/2022/stpr-2022.xsd" namespace="http://xbrl.sec.gov/stpr/2022" />
  <xsd:import schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd" namespace="http://fasb.org/us-gaap/2022" />
  <xsd:import schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-roles-2022.xsd" namespace="http://fasb.org/us-roles/2022" />
  <xsd:import schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-types-2022.xsd" namespace="http://fasb.org/us-types/2022" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:roleType id="TemplateLink" roleURI="http://www.energous.com/20220930/role/TemplateLink" xmlns:link="http://www.xbrl.org/2003/linkbase">
        <link:definition>00000 - Document - Template Link</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="watt-20220930_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:title="Calculation Links, all" xlink:type="simple" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="watt-20220930_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:title="Definition Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="watt-20220930_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Label Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="watt-20220930_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation Links, all" xlink:type="simple" />
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DocumentDocumentAndEntityInformation" id="Role_DocumentDocumentAndEntityInformation">
        <link:definition>100000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/StatementCondensedBalanceSheets" id="Role_StatementCondensedBalanceSheets">
        <link:definition>100010 - Statement - Condensed Balance Sheets</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/StatementCondensedBalanceSheetsParenthetical" id="Role_StatementCondensedBalanceSheetsParenthetical">
        <link:definition>100020 - Statement - Condensed Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/StatementCondensedStatementsOfOperations" id="Role_StatementCondensedStatementsOfOperations">
        <link:definition>100030 - Statement - Condensed Statements of Operations</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/StatementCondensedStatementOfChangesInStockholdersEquity" id="Role_StatementCondensedStatementOfChangesInStockholdersEquity">
        <link:definition>100040 - Statement - Condensed Statement of Changes in Stockholders&apos; Equity</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/StatementCondensedStatementsOfCashFlows" id="Role_StatementCondensedStatementsOfCashFlows">
        <link:definition>100050 - Statement - Condensed Statements of Cash Flows</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureBusinessOrganizationNatureOfOperations" id="Role_DisclosureBusinessOrganizationNatureOfOperations">
        <link:definition>100060 - Disclosure - Business Organization, Nature of Operations</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureLiquidityAndManagementPlans" id="Role_DisclosureLiquidityAndManagementPlans">
        <link:definition>100070 - Disclosure - Liquidity and Management Plans</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureSummaryOfSignificantAccountingPolicies" id="Role_DisclosureSummaryOfSignificantAccountingPolicies">
        <link:definition>100080 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureCommitmentsAndContingencies" id="Role_DisclosureCommitmentsAndContingencies">
        <link:definition>100090 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockholdersEquity" id="Role_DisclosureStockholdersEquity">
        <link:definition>100100 - Disclosure - Stockholders&apos; Equity</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockBasedCompensation" id="Role_DisclosureStockBasedCompensation">
        <link:definition>100110 - Disclosure - Stock Based Compensation</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureRelatedPartyTransactions" id="Role_DisclosureRelatedPartyTransactions">
        <link:definition>100120 - Disclosure - Related Party Transactions</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureCustomerConcentrations" id="Role_DisclosureCustomerConcentrations">
        <link:definition>100130 - Disclosure - Customer Concentrations</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureSubsequentEvents" id="Role_DisclosureSubsequentEvents">
        <link:definition>100140 - Disclosure - Subsequent Events</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies" id="Role_DisclosureSummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>100150 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesTables" id="Role_DisclosureSummaryOfSignificantAccountingPoliciesTables">
        <link:definition>100160 - Disclosure - Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureCommitmentsAndContingenciesTables" id="Role_DisclosureCommitmentsAndContingenciesTables">
        <link:definition>100170 - Disclosure - Commitments and Contingencies (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockBasedCompensationTables" id="Role_DisclosureStockBasedCompensationTables">
        <link:definition>100180 - Disclosure - Stock Based Compensation (Tables)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureLiquidityAndManagementPlansAdditionalInformationDetail" id="Role_DisclosureLiquidityAndManagementPlansAdditionalInformationDetail">
        <link:definition>100190 - Disclosure - Liquidity and Management Plans - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureSignificantAccountingPoliciesAdditionalInformationDetail" id="Role_DisclosureSignificantAccountingPoliciesAdditionalInformationDetail">
        <link:definition>100200 - Disclosure - Significant Accounting Policies - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareDetail" id="Role_DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareDetail">
        <link:definition>100210 - Disclosure - Summary of Significant Accounting Policies - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureCommitmentsAndContingenciesOperatingLeasesAdditionalInformationDetail" id="Role_DisclosureCommitmentsAndContingenciesOperatingLeasesAdditionalInformationDetail">
        <link:definition>100220 - Disclosure - Commitments and Contingencies - Operating Leases - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureCommitmentsAndContingenciesScheduleOfReconciliationOfUndiscountedCashFlowsToLeaseLiabilitiesRecognizedDetail" id="Role_DisclosureCommitmentsAndContingenciesScheduleOfReconciliationOfUndiscountedCashFlowsToLeaseLiabilitiesRecognizedDetail">
        <link:definition>100230 - Disclosure - Commitments and Contingencies - Schedule of Reconciliation of Undiscounted Cash Flows to Lease Liabilities Recognized (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureCommitmentsAndContingenciesScheduleOfReconciliationOfUndiscountedCashFlowsToLeaseLiabilitiesRecognizedDetail2" id="Role_DisclosureCommitmentsAndContingenciesScheduleOfReconciliationOfUndiscountedCashFlowsToLeaseLiabilitiesRecognizedDetail2">
        <link:definition>100240 - Disclosure - Commitments and Contingencies - Schedule of Reconciliation of Undiscounted Cash Flows to Lease Liabilities Recognized (Detail)2</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureCommitmentsAndContingenciesHostedDesignSoftwareAgreementAdditionalInformationDetail" id="Role_DisclosureCommitmentsAndContingenciesHostedDesignSoftwareAgreementAdditionalInformationDetail">
        <link:definition>100250 - Disclosure - Commitments and Contingencies - Hosted Design Software Agreement - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureCommitmentsAndContingenciesMBOBonusPlanAdditionalInformationDetail" id="Role_DisclosureCommitmentsAndContingenciesMBOBonusPlanAdditionalInformationDetail">
        <link:definition>100260 - Disclosure - Commitments and Contingencies - MBO Bonus Plan - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureCommitmentsAndContingenciesExecutiveEmployeeAgreementCesarJohnstonAdditionalInformationDetail" id="Role_DisclosureCommitmentsAndContingenciesExecutiveEmployeeAgreementCesarJohnstonAdditionalInformationDetail">
        <link:definition>100270 - Disclosure - Commitments and Contingencies - Executive Employee Agreement - Cesar Johnston - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureCommitmentsAndContingenciesEmployeeAgreementStephenRizzoneAdditionalInformationDetail" id="Role_DisclosureCommitmentsAndContingenciesEmployeeAgreementStephenRizzoneAdditionalInformationDetail">
        <link:definition>100280 - Disclosure - Commitments and Contingencies - Employee Agreement - Stephen Rizzone - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureCommitmentsAndContingenciesEmployeeAgreementNeerajSahejpalAdditionalInformationDetail" id="Role_DisclosureCommitmentsAndContingenciesEmployeeAgreementNeerajSahejpalAdditionalInformationDetail">
        <link:definition>100290 - Disclosure - Commitments and Contingencies - Employee Agreement - Neeraj Sahejpal - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureCommitmentsAndContingenciesStrategicAllianceAgreementAdditionalInformationDetail" id="Role_DisclosureCommitmentsAndContingenciesStrategicAllianceAgreementAdditionalInformationDetail">
        <link:definition>100300 - Disclosure - Commitments and Contingencies - Strategic Alliance Agreement - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockholdersEquityAdditionalInformationDetail" id="Role_DisclosureStockholdersEquityAdditionalInformationDetail">
        <link:definition>100310 - Disclosure - Stockholders&apos; Equity - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockBasedCompensationEquityIncentivePlanAdditionalInformationDetail" id="Role_DisclosureStockBasedCompensationEquityIncentivePlanAdditionalInformationDetail">
        <link:definition>100320 - Disclosure - Stock Based Compensation - Equity Incentive Plan - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockBasedCompensationStockOptionAwardActivityAdditionalInformationDetail" id="Role_DisclosureStockBasedCompensationStockOptionAwardActivityAdditionalInformationDetail">
        <link:definition>100330 - Disclosure - Stock Based Compensation - Stock Option Award Activity - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockBasedCompensationSummaryOfFairValuesOfStockOptionsGrantedDetail" id="Role_DisclosureStockBasedCompensationSummaryOfFairValuesOfStockOptionsGrantedDetail">
        <link:definition>100340 - Disclosure - Stock Based Compensation - Summary of Fair Values of Stock Options Granted (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockBasedCompensationSummaryOfStockOptionActivityDetail" id="Role_DisclosureStockBasedCompensationSummaryOfStockOptionActivityDetail">
        <link:definition>100350 - Disclosure - Stock Based Compensation - Summary of Stock Option Activity (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockBasedCompensationPerformanceShareUnitsAdditionalInformationDetail" id="Role_DisclosureStockBasedCompensationPerformanceShareUnitsAdditionalInformationDetail">
        <link:definition>100360 - Disclosure - Stock Based Compensation - Performance Share Units - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockBasedCompensationSummaryOfActivityRelatedToPsusDetail" id="Role_DisclosureStockBasedCompensationSummaryOfActivityRelatedToPsusDetail">
        <link:definition>100370 - Disclosure - Stock Based Compensation - Summary of Activity Related to PSUs (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockBasedCompensationRestrictedStockUnitsAdditionalInformationDetail" id="Role_DisclosureStockBasedCompensationRestrictedStockUnitsAdditionalInformationDetail">
        <link:definition>100380 - Disclosure - Stock Based Compensation - Restricted Stock Units - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockBasedCompensationScheduleOfRestrictedStockUnitsActivityDetail" id="Role_DisclosureStockBasedCompensationScheduleOfRestrictedStockUnitsActivityDetail">
        <link:definition>100390 - Disclosure - Stock Based Compensation - Schedule of Restricted Stock Units Activity (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockBasedCompensationEmployeeStockPurchasePlanAdditionalInformationDetail" id="Role_DisclosureStockBasedCompensationEmployeeStockPurchasePlanAdditionalInformationDetail">
        <link:definition>100400 - Disclosure - Stock Based Compensation - Employee Stock Purchase Plan - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockBasedCompensationSummaryOfStockBasedCompensationCostsRecognizedDetail" id="Role_DisclosureStockBasedCompensationSummaryOfStockBasedCompensationCostsRecognizedDetail">
        <link:definition>100410 - Disclosure - Stock Based Compensation - Summary of Stock-based Compensation Costs Recognized (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureStockBasedCompensationSummaryOfStockBasedCompensationReflectedWithinStatementsOfOperationsDetail" id="Role_DisclosureStockBasedCompensationSummaryOfStockBasedCompensationReflectedWithinStatementsOfOperationsDetail">
        <link:definition>100420 - Disclosure - Stock Based Compensation - Summary of Stock-based Compensation Reflected within Statements of Operations (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureRelatedPartyTransactionsAdditionalInformationDetail" id="Role_DisclosureRelatedPartyTransactionsAdditionalInformationDetail">
        <link:definition>100430 - Disclosure - Related Party Transactions - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureCustomerConcentrationsAdditionalInformationDetail" id="Role_DisclosureCustomerConcentrationsAdditionalInformationDetail">
        <link:definition>100440 - Disclosure - Customer Concentrations - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.energous.com/20220930/taxonomy/role/DisclosureSubsequentEventsAdditionalInformationDetail" id="Role_DisclosureSubsequentEventsAdditionalInformationDetail">
        <link:definition>100450 - Disclosure - Subsequent Events - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element id="watt_AccruedSeveranceExpense" name="AccruedSeveranceExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="watt_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationPerformanceShareUnits" name="AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationPerformanceShareUnits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="watt_StockIssuedDuringPeriodValuePerformanceShareUnits" name="StockIssuedDuringPeriodValuePerformanceShareUnits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="watt_StockIssuedDuringPeriodSharesPerformanceShareUnits" name="StockIssuedDuringPeriodSharesPerformanceShareUnits" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_IncreaseDecreaseInOperatingLeaseRightOfUseAssets" name="IncreaseDecreaseInOperatingLeaseRightOfUseAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="watt_IncreaseDecreaseInAccruedSeveranceExpense" name="IncreaseDecreaseInAccruedSeveranceExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="watt_IncreaseDecreaseInOperatingLeaseLiabilities" name="IncreaseDecreaseInOperatingLeaseLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="watt_LiquidityAndManagementPlanDisclosureTextBlock" name="LiquidityAndManagementPlanDisclosureTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_LiquidityAndManagementPlanDisclosureAbstract" name="LiquidityAndManagementPlanDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_EmployeeStockPurchasePlanMember" name="EmployeeStockPurchasePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_LiquidityAndManagementPlansLineItems" name="LiquidityAndManagementPlansLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_LiquidityAndManagementPlansTable" name="LiquidityAndManagementPlansTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_SummaryOfSignificantAccountingPoliciesLineItems" name="SummaryOfSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_SummaryOfSignificantAccountingPoliciesTable" name="SummaryOfSignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_ProductDevelopmentProjectsRevenueMember" name="ProductDevelopmentProjectsRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_ExpiredOnOctoberSixTwoThousandTwentyTwoMember" name="ExpiredOnOctoberSixTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_ExpiringOnMarchFirstTwoThousandTwentyFourMember" name="ExpiringOnMarchFirstTwoThousandTwentyFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_OperatingLeaseMonthlyRentalExpense" name="OperatingLeaseMonthlyRentalExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="watt_MonthlyLeasePaymentThresholdLimit" name="MonthlyLeasePaymentThresholdLimit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="watt_CommitmentsAndContingenciesLineItems" name="CommitmentsAndContingenciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_CommitmentsAndContingenciesTable" name="CommitmentsAndContingenciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_SanJoseCaliforniaMember" name="SanJoseCaliforniaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_CostaMesaCaliforniaMember" name="CostaMesaCaliforniaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_InitialTermOfAgreement" name="InitialTermOfAgreement" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_AdditionalTermOfAgreement" name="AdditionalTermOfAgreement" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_QuarterlyPaymentForServiceAgreement" name="QuarterlyPaymentForServiceAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="watt_HostedDesignSoftwareAgreementMember" name="HostedDesignSoftwareAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_AccruedExpensesMember" name="AccruedExpensesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_AnnualBonusPercentage" name="AnnualBonusPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_OneTimeSignOnBonusAmount" name="OneTimeSignOnBonusAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="watt_BonusPayableNumberOfInstallments" name="BonusPayableNumberOfInstallments" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_BonusPayableInstallmentAmount" name="BonusPayableInstallmentAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="watt_MrJohnstonMember" name="MrJohnstonMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_JohnstonAAndRCICAgreementMember" name="JohnstonAAndRCICAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_AdditionalEquityAward" name="AdditionalEquityAward" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_AdditionalEquityAwardPerYear" name="AdditionalEquityAwardPerYear" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_TargetBonusPercentage" name="TargetBonusPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_EmploymentAgreementPercentageOfBaseSalary" name="EmploymentAgreementPercentageOfBaseSalary" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_AgreementEffectiveDate" name="AgreementEffectiveDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_MrRizzoneMember" name="MrRizzoneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_SeparationAgreementMember" name="SeparationAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_PotentialBonus" name="PotentialBonus" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="watt_MrNeerajSahejpalMember" name="MrNeerajSahejpalMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_StrategicAllianceAgreementMember" name="StrategicAllianceAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_NumberOfCommonStockVotingEntitlementPerShare" name="NumberOfCommonStockVotingEntitlementPerShare" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xsd:element id="watt_SalesAgreementMember" name="SalesAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_RemainingSecuritiesUnderAgreementsToRepurchaseOnShelfRegistrationStatement" name="RemainingSecuritiesUnderAgreementsToRepurchaseOnShelfRegistrationStatement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="watt_CommonStockOutstandingAbstract" name="CommonStockOutstandingAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_TwoThousandThirteenEquityIncentivePlanMember" name="TwoThousandThirteenEquityIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_NonemployeeEquityCompensationPlans2014Member" name="NonemployeeEquityCompensationPlans2014Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_TwoThousandAndFifteenPerformanceShareUnitPlanMember" name="TwoThousandAndFifteenPerformanceShareUnitPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_TwoThousandsSeventeenEquityInducementPlanMember" name="TwoThousandsSeventeenEquityInducementPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_CommonStockRemainEligibleToBeIssued" name="CommonStockRemainEligibleToBeIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xsd:element id="watt_ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumEmployeeSubscriptionRate" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumEmployeeSubscriptionRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xsd:element id="watt_EmployeeContributionThroughPayrollWithholdings" name="EmployeeContributionThroughPayrollWithholdings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="watt_ShareBasedCompensationArrangementShareBasedPaymentAwardOptionsVestedInPeriodShares" name="ShareBasedCompensationArrangementShareBasedPaymentAwardOptionsVestedInPeriodShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableOptionsExercised" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableOptionsExercised" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_ShareBasedCompensationArrangementShareBasedPaymentAwardOptionsForfeitedInPeriodShares" name="ShareBasedCompensationArrangementShareBasedPaymentAwardOptionsForfeitedInPeriodShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodWeightedAverageExercisePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePriceOfOptionsExercised" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePriceOfOptionsExercised" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeitedInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeitedInPeriodWeightedAverageExercisePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_EmployeeMember" name="EmployeeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_PercentageOfProportionateValueOfCallOptionForStock" name="PercentageOfProportionateValueOfCallOptionForStock" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_PercentageOfProportionateValueOfPutOptionForStock" name="PercentageOfProportionateValueOfPutOptionForStock" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_SeveranceExpense" name="SeveranceExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="watt_DialogSemiconductorPlcMember" name="DialogSemiconductorPlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_ChipDevelopmentMember" name="ChipDevelopmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_ConcentrationRiskNumberOfCustomers" name="ConcentrationRiskNumberOfCustomers" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="watt_CustomerMember" name="CustomerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="watt_RemainingSecuritiesAtTheMarketOffering" name="RemainingSecuritiesAtTheMarketOffering" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
</xsd:schema>
