14.  Other Current Liabilities

The Company is a party to a Development and License Agreement with Carrier Corporation (“Carrier”) regarding the payment of royalties on the sale of each of the Company’s 200 kilowatt (“C200”) microturbines. Carrier earned $0.2 million and $0.1 million in royalties for C200 and C1000 Series system sales during the three months ended September 30, 2017 and 2016, respectively. Carrier earned $0.5 million and $0.3 million in royalties for C200 and C1000 system sales during the six months ended September 30, 2017 and 2016, respectively. Earned royalties of approximately $0.2 million and $0.3 million were unpaid as of September 30, 2017 and March 31, 2017, respectively, and are included in accrued expenses in the accompanying balance sheets.