Energy Upgrade California offers rebates up to $6,500.00 in SDGE territory. Up to $4,500 in other territories. Unfortunately they don't/won't promote it. I can't get straight candid answers from the contractors supporting the program. Only that there has been cutbacks.
The program has struggled since the beginning. Costly overhead only returns cents on the dollar to the homeowner. From the contractors perspective bureaucratic administration has discouraged participation.
They (utilities) stopped accepting any new contractors into the program, Website is hamstrung to a couple of pages with no info on the Home Upgrade or Advance path rebates.
The only silver lining has been a boom for the HVAC industry. I don't know any GC that has stayed with the program as a home performance contractor.
Homeowners will never find these rebates.