As the Million Solar Roofs Bill heads into its last votes in the Assembly, Environment California activists have launched a series of “Honk for Solar” rallies in the Bay Area in support of the nation’s largest solar power bill, SB 1.

A rally is planned for the Los Altos Farmers’ Market 2-4 p.m. today at the corner of Main and First streets in the downtown.

The bill, sponsored by the bipartisan team of state Senators Kevin Murray, a Democrat, and John Campbell, a Republican, and Gov. Arnold Schwarzenegger was passed by the Senate by a vote of 30 to five. The Assembly has less than one month to pass the bill.