Annual report pursuant to Section 13 and 15(d)

STATEMENTS OF CASH FLOWS

v2.4.1.9
STATEMENTS OF CASH FLOWS (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Cash flows from operating activities:    
Net loss $ (45,603,110)us-gaap_NetIncomeLoss $ (5,521,081)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 371,189us-gaap_DepreciationDepletionAndAmortization 4,717us-gaap_DepreciationDepletionAndAmortization
Loss on retirement of fixed assets 22,818us-gaap_GainsLossesOnSalesOfAssets 0us-gaap_GainsLossesOnSalesOfAssets
Stock based compensation 2,547,978us-gaap_ShareBasedCompensation 16,148us-gaap_ShareBasedCompensation
Amortization of debt discount 964,851us-gaap_AmortizationOfDebtDiscountPremium 705,289us-gaap_AmortizationOfDebtDiscountPremium
Warrant expense 0us-gaap_FairValueAdjustmentOfWarrants 724,000us-gaap_FairValueAdjustmentOfWarrants
Write-off of abandoned trademark 0us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf 4,725us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
Gain on conversion of notes payable and accrued interest (2,084,368)us-gaap_GainsLossesOnExtinguishmentOfDebt 0us-gaap_GainsLossesOnExtinguishmentOfDebt
Change in fair market value of derivative liabilities 26,265,177us-gaap_ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1 177,000us-gaap_ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1
Amortization of prepaid rent from stock issuance to landlord 20,196watt_AmortizationOfPrepaidRentFromStockIssuanceToLandlord   
Changes in operating assets and liabilities:    
Prepaid expenses and other current assets (289,383)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets (127,197)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Other assets (15,689)us-gaap_IncreaseDecreaseInOtherNoncurrentAssets (6,959)us-gaap_IncreaseDecreaseInOtherNoncurrentAssets
Accounts payable 1,354,973us-gaap_IncreaseDecreaseInAccountsPayable 359,163us-gaap_IncreaseDecreaseInAccountsPayable
Accrued expenses 838,945us-gaap_IncreaseDecreaseInAccruedLiabilities 233,217us-gaap_IncreaseDecreaseInAccruedLiabilities
Net cash used in operating activities (15,606,423)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations (3,430,978)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Cash flows from investing activities:    
Purchase of property and equipment (1,619,694)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment (194,329)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Costs of trademark 0watt_PaymentsToAcquireCostsOfTrademark (4,725)watt_PaymentsToAcquireCostsOfTrademark
Net cash used in investing activities (1,619,694)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations (199,054)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Cash flows from financing activities:    
Proceeds from the sale of common stock 0us-gaap_ProceedsFromIssuanceOfCommonStock 200,681us-gaap_ProceedsFromIssuanceOfCommonStock
Payment of deferred offering cost 0watt_PaymentOfDeferredOfferingCosts (88,319)watt_PaymentOfDeferredOfferingCosts
Repurcharse of restricted common stock 0us-gaap_PaymentsForRepurchaseOfCommonStock (29,553)us-gaap_PaymentsForRepurchaseOfCommonStock
Proceeds from IPO, net of underwriter's discount and offering expenses 24,872,170us-gaap_ProceedsFromIssuanceInitialPublicOffering 0us-gaap_ProceedsFromIssuanceInitialPublicOffering
Proceeds from secondary offering, net of underwriter's discount and offering expenses 20,993,759watt_ProceedsFromIssuanceSecondaryPublicOffering   
Proceeds from the sale of senior secured convertible notes 0us-gaap_ProceedsFromConvertibleDebt 5,500,009us-gaap_ProceedsFromConvertibleDebt
Proceeds from the sale of stock to strategic investor, net 900,000us-gaap_ProceedsFromOtherEquity 0us-gaap_ProceedsFromOtherEquity
Sale of warrant to IPO underwriter 1,000us-gaap_ProceedsFromIssuanceOfWarrants 0us-gaap_ProceedsFromIssuanceOfWarrants
Net cash provided by financing activities 46,766,929us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations 5,582,818us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Net increase in cash and cash equivalents 29,540,812us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease 1,952,786us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents - beginning 1,953,780us-gaap_CashAndCashEquivalentsAtCarryingValue 994us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents - ending 31,494,592us-gaap_CashAndCashEquivalentsAtCarryingValue 1,953,780us-gaap_CashAndCashEquivalentsAtCarryingValue
Supplemental disclosure of non-cash financing activities:    
Decrease in deferred offering costs charged to the IPO 88,319us-gaap_IncreaseDecreaseInDeferredCharges 0us-gaap_IncreaseDecreaseInDeferredCharges
Common stock issued upon conversion of notes payable and accrued interest payable 26,790,177us-gaap_DebtConversionConvertedInstrumentAmount1 0us-gaap_DebtConversionConvertedInstrumentAmount1
Increase in additional paid in capital upon extinguishment of derivative liability for warrants 5,752,000us-gaap_AdjustmentsToAdditionalPaidInCapitalOther 0us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
Common stock issued to landlord for tenant improvements of $100,000 and prepaid rent of $400,000 $ 500,000us-gaap_StockIssuedDuringPeriodValueIssuedForNoncashConsiderations $ 0us-gaap_StockIssuedDuringPeriodValueIssuedForNoncashConsiderations