attributable to the significant increase in capacity at our Rockdale Facility associated with our long-term expansion project.
Engineering revenue in excess of engineering cost of revenue for the year three-month period ended March 31, 2023 was $0.6 million. Engineering cost of revenue consists primarily of direct materials and labor, as well as indirect manufacturing costs, and the increase in costs was primarily tied to the increase in revenue from higher demand for our products from third-party data center customers.
Power curtailment credits received, based on ancillary services fees earned from our participation in ERCOT’s demand response programs and our ability under long-term power agreements to sell power back to the ERCOT grid at market-driven spot prices and thereby reduce our operating costs, totaled approximately $3.1 million for the three-months ended March 31, 2023, as compared to $2.6 million during the same three-month period in 2022, and equate to approximately 137 Bitcoin as computed by using average daily closing Bitcoin prices on a monthly basis.
If power credits were directly allocated between Bitcoin Mining cost of revenues and Data Center Hosting cost of revenues based on proportional power consumption, Bitcoin Mining cost of revenues would have decreased by $1.9 million, increasing Bitcoin Mining revenue in excess of cost of revenues to $28.1 million (58.4% of mining revenue) on a non-GAAP basis, while Data Center Hosting cost of revenues would have decreased by $1.1 million, reducing Data Center Hosting cost in excess of revenues to $(15.5) million on a non-GAAP basis.
Selling, general and administrative expenses during the three-month period ended March 31, 2023 totaled $12.7 million, an increase of $1.8 million relative to the same period in 2022. The increase was primarily related to increases in compensation expenses of $2.8 million as a result of hiring additional employees to support the Company’s ongoing growth, professional fees of $2.0 million primarily related to public company compliance and IT projects, legal fees, and an increase in other general operating costs to support the Company’s growth, offset by a decrease in stock compensation of $5.3 million due to forfeiture of restricted common stock awards.
Net loss for the three-month period ended March 31, 2023 was $(55.7) million, or $(0.33) per share, compared to net income of $36.6 million, or $0.31 per share in the same period of 2022. The net loss for the quarter included non-cash stock-based compensation of $2.2 million, depreciation and amortization of $59.3 million, and non-cash charges of $4.5 million related to impairment of our Bitcoin.
Non-GAAP Adjusted EBITDA for the three-month period ended March 31, 2023 was $7.5 million, as compared to Non-GAAP Adjusted EBITDA of $12.7 million for the same three-month period in 2022.