Houston Chronicle: AUSTIN — Senate-passed bill that would invest half a billion dollars into the industry over the next five years. The investment would come through rebates for solar installations, from homeowners` rooftop panels to large-scale projects envisioned for West Texas. The bill, passed by a vote of 26 to 4, now goes to the House. Money for the rebates would be raised through monthly fees on electric bills. Homeowners would pay 20 cents, small businesses $2 and industries …