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Warranty Liability | 12 Months Ended
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Dec. 31, 2021
Disclosure Warranty Liability Abstract |
Warranty Liability | Note 13 - Warranty Liability For the year ended December 31, 2021 and 2020 there was no change in our warranty liability. We estimate our warranty liability based on past experiences and estimated replacement cost of material and labor to replace the critical turbine in the units that are still under warranty.

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