Summary of Significant Accounting Policies (Details 2) (USD $)
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12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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Summary Of Significant Accounting Policies [Line Items] | ||
Beginning balance | $ 6,277,000us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue | |
Ending balance | 0us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue | 6,277,000us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue |
Convertible Notes Payable [Member] | ||
Summary Of Significant Accounting Policies [Line Items] | ||
Derivative Fair Value Of Derivative Net |
(26,790,177)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings / us-gaap_ShortTermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |
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Convertible Debt Securities [Member] | ||
Summary Of Significant Accounting Policies [Line Items] | ||
Derivative Fair Value Of Derivative Net |
26,265,177us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_ConvertibleDebtSecuritiesMember |
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Financing Warrant [Member] | ||
Summary Of Significant Accounting Policies [Line Items] | ||
Derivative Fair Value Of Derivative Net |
(1,733,000)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = watt_FinancingWarrantMember |
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Consulting Warrant [Member] | ||
Summary Of Significant Accounting Policies [Line Items] | ||
Derivative Fair Value Of Derivative Net |
$ (4,019,000)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = watt_ConsultingWarrantMember |
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- Definition
Amount of gain (loss) recognized on the income statement for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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