Workers from Solar City install photovoltaic panels on the roof of a house on Dec. 9, 2013, in San Leandro, Calif. The company, owned by Tesla, relies on monthly payments from solar panel customers.
Workers from Solar City install photovoltaic panels on the roof of a house on Dec. 9, 2013, in San Leandro, Calif. The company, owned by Tesla, relies on monthly payments from solar panel customers.