Property, plant and equipment
|12 Months Ended|
Dec. 31, 2020
|Property, Plant and Equipment [Abstract]|
|Property, plant and equipment||Property, plant and equipment
Property, plant and equipment at December 31, 2020 and 2019 consisted of the following:
* Lesser of estimated useful life of asset or lease term
Depreciation and amortization expense on property and equipment for the years ended December 31, 2020 and 2019 was $702,113 and $847,622, respectively.
During the year ended December 31, 2020, we determined that certain of the ADGE customer contracts terminated due to the customers failure to perform their obligations pursuant to the contractual agreements and deemed the assets related to the contracts at these sites to be impaired. We recorded a non-cash impairment of $524,972 which is included in the Consolidated Statement of Operations for the year ended December 31, 2020, within long-lived asset impairment.
In March 2019, we sold certain energy systems related assets and related energy production contracts. See Note 5."Sale of Energy Producing Assets and Goodwill Impairment" for further discussion.
The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections.
Reference 1: http://www.xbrl.org/2003/role/disclosureRef