OAKLAND, Nov 10 (Reuters) - California regulators on Thursday made a new proposal for incentivizing rooftop solar systems, a contentious matter as the state tries to expand renewable energy and respond to critics who want more equitable distribution of incentives.

Shares of rooftop solar system providers, including Sunrun Inc, SunPower Corp and Solaredge Technologies Inc, were up between 12% and 26% in afternoon trading.

The new policy proposals outlined by the California Public Utilities Commission (CPUC) include an additional $900 million to support battery and solar systems, mostly for low-income customers.

The proposal will not affect current home solar owners and will maintain their current compensation, the CPUC said. The previous one would have charged existing systems $8 per kilowatt to maintain electrical infrastructure. (Reporting by Peter Henderson, Nichola Groom and Ruhi Soni; Editing by Anil D'Silva)