Commitments |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2018 | |||||||||||||||||||||||||||||||||||||||||
| Commitments [Abstract] | |||||||||||||||||||||||||||||||||||||||||
| Commitments |
19.Commitments
Under the terms of its operating lease for vehicles and the office premises in Casper, Wyoming, the Company is committed to minimum annual lease payments as follows:
Rent expense under these agreements was $0.2 million, $0.2 million and $0.2 million for the years ended December 31, 2018, 2017 and 2016, respectively.
Principal payments required under debt agreements are as follows:
Off Take Sales Agreements
As of December 31, 2018, we continue to have multiple off take sales agreements with various U.S. utilities. These agreements were completed between 2012 and 2016 for deliveries between 2019 and 2021 as follows:
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