Gross Loss and Gross Margin
Gross loss for the six months ended June 30, 2022 improved by $2.0 million, or 60%, to $1.3 million compared to $3.4 million for the six months ended June 30, 2021. Gross margin for the six months ended June 30, 2022 improved 29.6% to negative 8.0% compared to negative 37.6% for the six months ended June 30, 2021 due to the improved leveraging of energy and non-energy related costs, increased regulatory credit sales, as well as improved ancillary margin.
Operating Expenses
General and Administrative
General and administrative costs for the six months ended June 30, 2022 increased $32.3 million, or 127%, to $57.6 million compared to $25.3 million for the six months ended June 30, 2021. The difference was driven by a $19.9 million increase in payroll expenses due to higher headcount and higher share-based compensation, a $3.2 million increase in insurance expenses, a $3.0 million increase in software expenses, a $3.0 million increase in legal service and professional service expenses, as well as a $2.5 million increase in loss on fixed asset disposals.
Depreciation, Amortization and Accretion
Depreciation, amortization and accretion expenses for the six months ended June 30, 2022 increased $3.0 million, or 59%, to $8.0 million compared to $5.1 million for the six months ended June 30, 2021. The increase was primarily due to higher intangible asset amortization as a result of the PlugShare acquisition and software amortization.
Operating Loss and Operating Margin
During the six months ended June 30, 2022, EVgo had an operating loss of $67.0 million, an increase of $33.2 million, or 98%, compared to $33.8 million for the six months ended June 30, 2021. Operating margin for the six months ended June 30, 2022 decreased to negative 399.2% compared to negative 378.6% for the six months ended June 30, 2021. The increase in operating loss period-over-period was primarily due to an increase in general and administrative expenses, partially offset by the improvement in gross margin.
Interest Expense
For the six months ended June 30, 2022, interest expense was de minimis. There was no interest expense for the six months ended June 30, 2021.
Interest Expense, Related Party
There was no interest expense for the six months ended June 30, 2022. For the six months ended June 30, 2021, interest expense was $1.9 million. The decrease was related to conversion of the borrowings under the LS Power Note that was converted to equity on the CRIS Close Date.
Interest Income
Interest income for the six months ended June 30, 2022 was $0.7 million. Interest income for the six months ended June 30, 2021 was de minimis. The increase was a result of the interest earned on investments made in the six months ended June 30, 2022.
Other (Expense) Income, Net
Other (expense) income, net, for the six months ended June 30, 2022 decreased $1.1 million, or 167%, to $0.4 million of other expense, net, compared to $0.6 million of other income, net, for the six months ended June 30, 2021. The decrease was primarily due to unrealized losses on marketable equity securities.