Most of the rebates through the California Solar Initiative have ended. In Buena Park, your electric utility is Southern California Edison and you actually might still be in luck.
Southern California Edison announced on October 4th that they've resumed Step 10 of the residential rebate reservation process. Contact SCE today and you might still qualify for a rebate.
If you don't act in time for the rebate, you'll still be eligible for a 30% federal tax credit through the Investment Tax Credit (ITC) program through 2016.