Julie Blunden

As states implement renewable energy mandates, and as solar photovoltaic (PV) technology becomes more economical, the market for distributed rooftop solar is growing. As a result, various players are taking different approaches to finance PV development—from net-metered residential systems financed by third-party leases, to grid-scale, utility-owned projects. Fortnightly Contributor William Atkinson talks to some major players in solar PV finance and examines the implications for investor-owned utilities.

Like other California electric utilities, San Francisco-based Pacific Gas & Electric (PG&E) has been scrambling to meet the state’s renewable portfolio standard (RPS), which requires suppliers to obtain at least 20 percent of their power from renewable energy sources by 2010. Though the RPS includes a variety of technologies, renewables developers are choosing utility-scale solar power more than any other resource, says Hal La Flash, PG&E’s director of emerging clean technologies.

The future looks bright for distributed photovoltaics. New technologies and government policies are driving a revolution in PV manufacturing. But a robust national distributed generation system requires a grid that can accept two-way control of electrons.