Passive solar heating and cooling installations may receive payments through the 2006 California Solar Initiative--if they show metered energy delivery--according to a proposed California Public Utilities Commission decision. While financial incentives have applied to rooftop photovoltaic systems, they have not extended to solar-thermal installations, which have languished. The commission re-introduced the idea in 2010 with funds coming from natural gas ratepayers, under the theory that less fossil fuel would be used if solar thermal replaces natural gas. The 2010 plan suffered from a lack of applications. The new plan for $350 million in total rebates would be applied to: -Process heat; -Solar cooling; -Single family combination water\/space heating; and -Commercial water\/space heating. The proposed performance-based incentives are expected to \u201cfoster competition, expand the marketplace, and drive increased participation\u201d in the state\u2019s solar program, according to the proposed decision. That includes solar cooling, which is not a \u201ccommercially mature\u201d technology. Incentives are supposed to establish \u201climited\u201d pilot programs for heat-to-cooling, like absorption chillers.