WEST SACRAMENTO (AP) — Wal-Mart Stores Inc. said Wednesday it plans to install solar-power panels at most of its California stores.

A Wal-Mart spokeswoman said the company has installed rooftop panels on about 65 California stores and plans to raise that number to more than 130 — about three-fourths of its stores in the state — by the end of 2013.

The Arkansas company hopes to use solar for 20 percent to 30 percent of each store’s electricity needs. It said solar energy has cut its energy spending by more than $1 million.

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