The Company believes that based on the information presented above and its quarterly management assessment, it has sufficient liquidity to fund its operations and capital expenditures for the next twelve months following the issuance of the financial statements for the ninesix months ended December 31, 2017.September 30, 2022. The Company’s liquidity is highly dependent on its ability to increase revenues, its ability to control its operating costs, and its ability to raise additional capital, if necessary. The impact of the COVID-19 pandemic and other sources of instability, including the war between Russia and Ukraine, on the global financing markets may reduce the Company's ability to raise additional capital, if necessary, which could negatively impact the Company's liquidity.  There can be no assurance that the Company will be able to continue to raise additional capital, on favorable terms or at all, from other sources or execute on any other means of improving liquidity described above.

2. Acquisitions

2021 Acquisition of Neeltran

On May 6, 2021, the Company entered into a Purchase and Sale Agreement (the "Real Property Purchase Agreement") and a Stock Purchase Agreement (the "Neeltran Stock Purchase Agreement") with the selling equity holders named therein. Also on May 6, 2021, pursuant to the terms of the Real Property Purchase Agreement, the Company's wholly-owned Connecticut limited liability company, AMSC Husky LLC ("AMSC Husky"), purchased the real property that serves as Neeltran's headquarters for $4.3 million, of which (a) $2.4 million was paid in immediately available funds by AMSC Husky to the owners of such real property, and (b) $1.9 million was paid directly to TD Bank as full payment for the outstanding indebtedness secured by the mortgage on such real property.

Pursuant to the terms of the Neeltran Stock Purchase Agreement, the Company purchased all of the issued and outstanding shares of capital stock of Neeltran, Inc., a Connecticut corporation ("Neeltran") and Neeltran International, Inc., a Connecticut corporation ("International") for $1.0 million in cash and 301,556 shares of the Company's common stock, $.01 par value per share ("AMSC Shares"), that were paid and issued, respectively, to the Neeltran selling stockholders. The Company also paid $1.1 million to International selling stockholders to pay off previous loans made by them to Neeltran.

Additionally, the Company paid approximately $7.6 million, including $1.9 million of indebtedness secured by the mortgage on the real property as described above, directly to Neeltran lenders at closing to extinguish outstanding Neeltran indebtedness to third parties. The total purchase price of $16.4 million includes cash paid, the fair value of the AMSC Shares issued at closing and the debt payoff on behalf of the sellers as follows (in millions):

The pro forma amounts include the historical operating results of the Company, and Neeltran, with appropriate adjustments that give effect to acquisition related costs, income taxes, intangible amortization resulting from the Neeltran Acquisition and certain conforming accounting policies of the Company. The pro forma amounts are not necessarily indicative of the operating results that would have occurred if the Neeltran Acquisition and related transactions had been completed at the beginning of the applicable periods presented. In addition, the pro forma amounts are not necessarily indicative of operating results in future periods.

Acquisition of NEPSI

On October 1, 2020 (the "NEPSI Acquisition Date"), the Company entered into a Stock Purchase Agreement (the "NEPSI Stock Purchase Agreement") with the selling stockholders named therein. Pursuant to the terms of the NEPSI Stock Purchase Agreement and concurrently with entering into such agreement, the Company acquired all of the issued and outstanding (i) shares of capital stock of Northeast Power Systems, Inc., a New York corporation ("NEPSI"), and (ii) membership interests of Northeast Power Realty, LLC, a New York limited liability company, which holds the real property that serves as NEPSI's headquarters (the "NEPSI Acquisition"). NEPSI is a U.S.-based global provider of medium-voltage metal-enclosed power capacitor banks and harmonic filter banks for use on electric power systems. Prior to the NEPSI Acquisition, the Company had purchased $0.4 million of products from NEPSI in fiscal year 2019 for which NEPSI was paid and had recorded revenue.

Pursuant to the NEPSI Stock Purchase Agreement, the Company acquired all of the issued and outstanding shares of NEPSI, and membership interest in the realty entity, for which the Company paid $26.0 million in cash and issued 873,657 restricted shares of the Company’s common stock. Additionally, the Company may issue to the selling stockholders up to an additional 1,000,000 shares of common stock upon NEPSI’s achievement of specified revenue objectives during varying periods of up to four years following closing of the NEPSI Acquisition. This contingent consideration is recorded as a derivative liability based on a Monte Carlo simulation to determine fair value at the time of issuance. NEPSI is now a wholly-owned subsidiary of the Company and is operated and reported as a component of its Grid business unit.

The NEPSI Acquisition completed by the Company during the fiscal year ended March 31, 2021 has been accounted for under the purchase method of accounting in accordance with ASC 805,Business Combinations. The Company allocated the purchase price to the assets acquired and liabilities assumed at their estimated fair values as of the date of NEPSI Acquisition. The excess of the purchase price paid by the Company over the estimated fair value of net assets acquired has been recorded as goodwill.  As NEPSI was previously a private company, the adoption of ASC 606 was completed as part of the NEPSI Acquisition.  See Note 3, "Revenue Recognition" for further details.  There were no leases acquired and the NEPSI Acquisition had no impact to the Company's reporting under ASC 842.

The total purchase price of approximately $42.4 million includes the fair value of shares of the Company’s common stock issued at closing, cash paid, and contingent consideration as follows (in millions):

Total consideration consists of (a) cash of $26.0 million, (b) issuance of the Company's common stock, using $14.23 per share, which was the closing price on the day that the Company acquired NEPSI, and (c) $4.0 million of contingent consideration for the earnout liability valued as of the NEPSI Acquisition Date. NEPSI Acquisition costs of $0.3 million were recorded in selling, general and administrative ("SG&A") costs for the fiscal year ended March 31, 2021.

The fair value of the contingent consideration was determined using a Monte Carlo model and is accounted for as a derivative liability which is revalued at the fair value determined at each subsequent balance sheet date until the contingencies are resolved and the shares to be issued are determined, with the change in fair value recorded in the current period operating loss or (income).  See Note 13, "Contingent Consideration" for further details and a summary of key assumptions used to determine fair value in each period.

The following table summarizes the allocation of the purchase price based on the estimated fair values of the assets acquired and liabilities assumed and related deferred income taxes in connection with the NEPSI Acquisition (in millions):

Inventory includes a $1.0 million adjustment to step up the inventory balance to fair value consistent with the purchase price allocation.  The fair value was determined based on the estimated selling price of the inventory, less the remaining manufacturing and selling cost and a normal profit margin on those manufacturing and selling efforts. The $1.0 million step up adjustment increased cost of revenue in the fiscal year ended March 31, 2021 as the inventory was sold.  This increase is not reflected in the pro forma condensed combined statements of operations because it does not have a continuing impact beyond the first year.

Backlog of $0.6 million was evaluated using the multi period excess earnings method under the income approach. The contracts with customers do not provide for any guarantees to source all future requirements from the Company. The amortization method being utilized is economic consumption estimated over a two year period with the expense being allocated to cost of revenues.

Customer relationships of $6.1 million relates to customers currently under contract and was determined based on a multi period excess earnings method under the income approach. The method of amortization being utilized is the economic consumption over 7 years with the expense being allocated to SG&A.

Trade names and trademarks of $0.6 million were reviewed, using the assumption that the Company would continue to utilize the NEPSI trade name indefinitely. The relief from royalty method was utilized using an 8% royalty rate on revenues with a 13% discount rate over 8 years. 

Goodwill represents the value associated with the acquired workforce and expected synergies related to the business combination of the two companies. Goodwill resulting from the NEPSI Acquisition was assigned to the Company’s Grid business segment.  Goodwill recognized in the NEPSI Acquisition is not deductible for tax purposes. The $1.7 million of deferred tax liability is primarily related to inventory step up and intangibles. 

3. Revenue Recognition

The Company’s revenues in its Grid business segment are derived primarily through enabling the transmission and distribution of power, providing planning services that allow it to identify power grid needs and risks, and developing ship protection systems for the U.S. Navy. The Company’s revenues in its Wind business segment are derived primarily through supplying advanced power electronics and control systems, licensing its highly engineered wind turbine designs, and providing extensive customer support services to wind turbine manufacturers. The Company records revenue based on a five-step model in accordance with ASC 606. For its customer contracts, the Company identifies the performance obligations, determines the transaction price, allocates the contract transaction price to the performance obligations, and recognizes the revenue when (or as) control of goods or services is transferred to the customer. In the three and six months ended September 30, 2022, 83% and 77% of revenue, respectively, was recognized at the point in time when control transferred to the customer, with the remainder being recognized over time. In the three and six months ended September 30, 2021, 86% and 82% of revenue, respectively, was recognized at the point in time when control transferred to the customer, with the remainder being recognized over time.

In the Company's equipment and system product line, each contract with a customer summarizes each product sold to a customer, which typically represents distinct performance obligations. A contract's transaction price is allocated to each distinct performance obligation using the respective standalone selling price which is determined primarily using the cost-plus expected margin approach and recognized as revenue when, or as, the performance obligation is satisfied. The majority of the Company’s product sales transfer control to the customer in line with the contracted delivery terms and revenue is recorded at the point in time when title and risk transfer to the customer, which is primarily upon delivery, as the Company has determined that this is the point in time that control transfers to the customer.

The Company's equipment and system product line includes certain contracts which do not meet the requirements of an exchange transaction and therefore do not fall within the scope of ASC 606.  As these non-exchange transaction contracts are considered grant revenue and do not fall within any specific accounting literature, the Company follows guidance within ASC 606 by analogy to recognize grant revenue over time. The Company recorded no grant revenue in each of the three and six months ended September 30, 2022. In the three and six months ended September 30, 2021, the Company recorded $0.3 million and $0.8 million in grant revenue, respectively, which is included in the Company’s Grid business segment revenue.

In the Company's service and technology development product line, there are several different types of transactions and each begins with a contract with a customer that summarizes each product sold to a customer, which typically represent distinct performance obligations. The technology development transactions are primarily for activities that have no alternative use and for which a profit can be expected throughout the life of the contract. In these cases, the revenue is recognized over time, but in the instances where a reasonable profit margin cannot be assured throughout the entire contract, the revenue is recognized at a point in time. Each contract's transaction price is allocated to each distinct performance obligation using the respective standalone selling price which is determined primarily using the cost-plus expected margin approach. The ongoing service transactions are for service contracts that provide benefit to the customer simultaneously as the Company performs its obligations, and therefore this revenue is recognized ratably over time throughout the effective period of these contracts. The transaction prices on these contracts are allocated based on an adjusted market approach which is reassessed annually for reasonableness. The field service transactions include contracts for delivery of goods and completion of services made at the customer's requests, which are not deemed satisfied until the work has been completed and/or the requested goods have been delivered, so all of this revenue is recognized at the point in time when the control changes, and at allocated prices based on the adjusted market approach driven by standard price lists. The royalty transactions are related to certain contract terms on transactions in the Company's equipment and systems product line based on activity as specified in the contracts. The transaction prices of these agreements are calculated based on an adjusted market approach as specified in the contract. The Company reports royalty revenue for usage-based royalties when the sales have occurred. In circumstances when collectability is not assured and a contract does not exist under ASC 606, revenue is deferred until a non-refundable payment has been received for substantially all the amount that is due and there are no further remaining performance obligations.

The Company's service contracts can include a purchase order from a customer for specific goods in which each item is a distinct performance obligation satisfied at a point in time at which control of the goods is transferred to the customer.  This transfer occurs based on the contracted delivery terms or when the requested service work has been completed. The transaction price for these goods is allocated based on the adjusted market approach considering similar transactions under similar circumstances. Service contracts are also derived from ongoing maintenance contracts and extended service-type warranty contracts. In these transactions, the Company is contracted to provide an ongoing service over a specified period of time. As the customer is consuming the benefits as the service is being provided, the revenue is recognized over time ratably.

The Company’s policy is not to accept volume discounts, product returns, or rebates and allowances within its contracts. In the event a contract was approved with any of these terms, it would be evaluated for variable consideration, estimated and recorded as a reduction of revenue in the same period the related product revenue was recorded.

The Company provides assurance-type warranties on all product sales for a term of typically one to three years, and extended service-type warranties at the customer's option for an additional term ranging up to four additional years. The Company accrues for the estimated warranty costs for assurance warranties at the time of sale based on historical warranty experience plus any known or expected changes in warranty exposure. For all extended service-type warranties, the Company recognizes the revenue ratably over time during the effective period of the services.

The Company records revenue net of sales tax, value added tax, excise tax and other taxes collected concurrent with revenue-producing activities. The Company has elected to recognize the cost for freight and shipping when control over the products sold passes to customers and revenue is recognized. The Company has elected to recognize incremental costs of obtaining a contract as expense when incurred except in contracts where the amortization period would exceed twelve months; in such cases the long-term amount will be assessed for materiality. The Company has elected not to adjust the promised amount of consideration for the effects of a significant financing component if the period of financing is twelve months or less.

The Company’s contracts with customers do not typically include extended payment terms and may include milestone billing over the life of the contract. Payment terms vary by contract type and type of customer and generally range from 30 to 60 days from delivery.  

The following tables disaggregate the Company’s revenue by product line and by shipment destination (in thousands):

As of September 30, 2022, and 2021, the Company’s contract assets and liabilities primarily relate to the timing differences between cash received from a customer in connection with contractual rights to invoicing and the timing of revenue recognition following completion of performance obligations. The Company's accounts receivable balance is made up entirely of customer contract related balances. Changes in the Company’s contract assets, which are included in “Unbilled accounts receivable” and “Deferred program costs” (see Note 8, “Accounts Receivable” and Note 9, “Inventory” for a reconciliation to the condensed consolidated balance sheets) and "Contract liabilities", which are included in the current portion and long-term portion of "Deferred revenue" in the Company’s condensed consolidated balance sheets, are as follows (in thousands):

The Company’s remaining performance obligations represent the unrecognized revenue value of the Company’s contractual commitments. The Company’s performance obligations may vary significantly each reporting period based on the timing of major new contractual commitments. As of September 30, 2022, the Company had outstanding performance obligations on existing contracts under ASC 606 to be recognized in the next twelve months of approximately $101.0 million. There are also approximately $18.1 million of outstanding performance obligations to be recognized over a period of thirteen to sixty months. The remaining performance obligations are subject to customer actions and therefore the timing of revenue recognition cannot be reasonably estimated. The twelve-month performance obligations include anticipated shipments to Inox based on the twelve-month rolling forecast provided by Inox on the multi-year supply contract. The quantities specified in any forecast provided by Inox related to the multi-year supply contract are firm and irrevocable for the firstthree months of a twelve-month rolling forecast. The timing of the performance obligations beyond the twelve-month forecast provided by Inox are not determinable and therefore are not included in the total remaining performance obligations. 

The following table sets forth customers who represented 10% or more of the Company’s total revenues for the three and six months ended September 30, 2022 and 2021:

4. Stock-Based Compensation