Southern California Edison is asking regulators for permission to improve clean energy offerings for customers who can’t install rooftop solar. The utility connects between 3,000 and 5,000 solar roofs per month, but many of its 15 million customers don’t own their homes or have access to a suitable rooftop for solar generation. By the company’s own admission, the existing program to serve those residents with community solar didn’t work well enough. Drawing on lessons from California and elsewhere, SCE proposed a suite of clean retail offerings in late September, including 100 percent clean energy and a new community renewables option.