Complete Home Energy Services —
Solar, Batteries, Roofing, Windows & HVAC

Frequently Asked Questions About Home Energy Services in California

Real answers to the questions California homeowners ask most about solar, batteries, roofing, windows, and HVAC.

• What is the best order to upgrade my home for energy efficiency?
  The most cost-effective sequence is: (1) fix your envelope first — windows and insulation reduce the load your HVAC and solar must cover; (2) replace aging HVAC with a high-efficiency heat pump to cut the largest single energy consumer in your home; (3) install solar sized to your reduced load; (4) add battery storage for outage protection and time-of-use bill management. Doing upgrades out of order — solar on a leaky, inefficient home — means oversizing and overpaying for your system. See our complete all-electric home upgrade guide →
• Does Watts Home Services serve SDG&E customers in Southern California?
  Yes. While our primary market is Northern and Central California, we welcome leads from SDG&E territory homeowners in San Diego and surrounding communities. SDG&E customers pay some of the highest utility rates in the country — solar and battery storage deliver strong returns in that territory. Contact us for a territory-specific estimate.
• How does NEM 3.0 affect whether solar is still worth it in California in 2026?
  Under CPUC's NEM 3.0 rules, export credits for excess solar sent to the grid were reduced significantly compared to NEM 2.0. Solar-only systems now have longer payback periods if you export a large share of production. The solution is solar paired with battery storage — consume your production at home, avoid time-of-use peak rates, and store excess for evening use. Solar + battery under NEM 3.0 still delivers an 8–9 year payback on most California homes.
• Do I need to replace my roof before installing solar panels?
  Not always — but if your roof is 10 or more years old, we strongly recommend it. Solar panels carry 25-year performance warranties. Removing and reinstalling panels for a mid-contract roof replacement typically costs $2,000–$5,000. Bundling roofing and solar in one project eliminates that risk, saves on mobilization costs, and can often be structured into a single financing arrangement. Our roofing partner, Sequoia Roofing & Construction (CSLB #1064775), handles all roof work.
• What solar financing options are available with no money down in California?
  Three $0-down options are available depending on your territory and situation: (1) Everbright PPA — pay per kilowatt-hour produced, no loan; (2) GridGen — exclusive to Pioneer Community Energy customers in EDH, Loomis, Rocklin, Lincoln, Auburn, and Granite Bay, no credit check, billed on your utility bill; (3) LightReach Battery Lease — battery-only for existing solar customers. A Prepaid Lease requires an upfront payment but delivers 30% off system cost with no tax liability required. Get a free estimate to see which option fits your home →
• What SMUD battery rebates are available for Sacramento homeowners?
  SMUD offers up to $5,400 per Tesla Powerwall through their battery incentive program, with a household cap of $10,000. SMUD customers who enroll in the Virtual Power Plant (VPP) program also receive $110 per quarter per Powerwall — $440 per year — for allowing SMUD to dispatch stored energy during grid events. Enrollment must occur within 90 days of Permission to Operate on the Solar and Storage Rate. Rebate amounts are subject to change — always verify current figures at smud.org or our SMUD battery rebate guide.
• Can new windows really reduce my solar system size?
  Yes — and the math is straightforward. ENERGY STAR certified windows reduce energy bills by an average of 12% annually compared to single-pane windows. For a Central Valley home running $300/month in electric costs, that's $36/month in savings before solar is added. Lower energy consumption means you need fewer panels to cover your load — reducing upfront system cost. In hot California climates, Low-E double-pane windows also cut cooling loads significantly, directly reducing your summer peak demand.
• What federal tax credits are available for home energy upgrades in 2026?
  Under the Inflation Reduction Act, homeowners can claim: (1) Energy Efficient Home Improvement Credit — 30% of costs up to $1,200/year for insulation, windows, and doors; up to $2,000/year for heat pumps and biomass stoves; (2) Residential Clean Energy Credit — 30% of solar panel and battery storage system costs for third-party owned systems. Note: the federal ITC for individually owned systems has expired under the current administration. Prepaid lease and PPA structures allow the third-party owner to claim the ITC and pass the savings to you as a 30% upfront discount. Always consult a tax professional for your specific situation.
• How does HVAC efficiency affect how much solar I need?
  HVAC accounts for over 50% of residential energy use in most California homes according to the U.S. Energy Information Administration. An aging system rated SEER 10–12 consumes significantly more electricity than a modern heat pump rated SEER 18–24. If you size solar against an inefficient HVAC load and then replace the HVAC later, you will have more solar than you need — wasted investment. Upgrading HVAC first and sizing solar to the reduced load produces a smaller, cheaper system with better payback.
• Does Watts Home Services handle the full project or refer to subcontractors?
  Watts Home Services handles all sales, design, and project coordination. Physical installation is performed by fully licensed California contractor partners: solar and battery installations by Solar Savings Direct, Inc (CSLB #1065773), and roofing by Sequoia Roofing & Construction (CSLB #1064775). For windows and HVAC, we connect you with vetted local installers in your area. You have one point of contact — us — throughout the entire project.