Earnings season has been terrible for clean energy companies.The week couldn't have been much worse for clean energy companies that once had hopes of disrupting the energy industry. As interest rates rise and the market looks for profitable companies, there aren't many to be found in the clean energy industry.According to data provided by S&P Global Market Intelligence, shares of Nikola Corp (NKLA -7.74%) fell as much as 16.7% this week, FuelCell Energy (FCEL -4.11%) dropped 21.1%, and Sunnova Energy (NOVA ...