Since September, solar stakeholders have been participating in regular work sessions at the Maine Public Utilities Commission (PUC) to develop an alternative to Maine’s current net metering rules. Net metering or “net energy billing” allows utility customers who also generate some of their own power (with solar panels, for example) to pay only for the difference between the energy they generate and the energy they consume. This straightforward concept exists in some form in more than 40 states. But as rooftop solar continues to expand, utilities are beginning to seek alternatives to net metering rules around the country.
When the Salt River Project utility in Arizona decided to impose new charges for its customers with rooftop solar installations in February, it opened another front in the solar war being waged across the country. Normally, these fights play out before state administrative agencies tasked with setting utilities’ rates and rules. Solar supporters argue that the fees discourage cost-beneficial investments into rooftop solar, while utilities argue that rooftop solar customers still rely on the grid and are not paying their fair share of the costs to support that grid.