From Tax Foundation :
As such, all companies, including fossil fuel companies, should be able to deduct their costs—from salaries for employees to new parts for an oil derrick. The R Street Institute put together a useful guide  of which energy tax provisions constitute appropriate cost recovery, and which are subsidies.
- “Tax Foundation”: https://taxfoundation.org/wyden-energy-tax-bill-infrastructure/
- “useful guide”: https://www.rstreet.org/wp-content/uploads/2017/10/117.pdf