Residential solar installer Sunrun Inc. said it’s ceasing operations in Nevada, the second company in as many days to cut jobs in the state after regulators imposed new fees on rooftop systems. The company’s exit will result in “hundreds of job losses” and the local installers it works with will be forced to fire people or close shop entirely, Sunrun said in a statement. Industry leader SolarCity Corp. is also ceasing operations in Nevada and said the move would cost about 550 jobs. State and federal programs that promote wider use of clean energy have helped make rooftop systems the fastest-growing part of the solar market. That’s led to friction between companies that install and operate them, and utilities that view them as a threat to revenue. Some traditional power companies have asked regulators to revise the programs.