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Under NEM 3.0, a battery is not legally required — but it is financially essential in SDG&E territory. Without a battery, excess solar you generate during the day gets exported to the grid at approximately $0.05 to $0.08/kWh. You then buy that same electricity back during peak hours at $0.45 to $0.62/kWh — a 10x value gap. A Powerwall captures your excess midday solar and deploys it during peak hours, eliminating that gap entirely. SDG&E has the widest peak-to-off-peak rate spread in California, which means battery ROI is stronger here than anywhere else in the state.

The average installed cost for a residential solar system in San Diego is approximately $2.51 per watt before any incentives — putting a typical 8 kW system around $20,000. Most San Diego County homeowners we work with choose a $0 down lease or PPA, which eliminates the upfront cost entirely. Under a lease or PPA, you pay a fixed monthly rate — typically $150 to $250/month depending on system size — which is significantly lower than your current SDG&E bill. The 30% federal tax credit (48E) is passed through to you as a lower rate on $0 down products.

San Diego County has one of the faster solar installation timelines in California. The City of San Diego participates in SolarAPP+ for qualifying residential systems under 15 kW — providing same-day permit approval in many cases. Physical installation typically takes 1 to 2 days. SDG&E's interconnection process runs approximately 20 to 60 days after a passed inspection — significantly faster than PG&E. Total timeline from signed contract to Permission to Operate typically ranges 45 to 90 days.

San Diego County homeowners can access several incentives in 2026. The federal 30% tax credit (48E) is available through 2027 on leases and PPAs — passed through to you as a lower monthly rate with no tax liability required. The Self-Generation Incentive Program (SGIP) provides rebates for battery storage for qualifying customers. The California Solar Property Tax Exclusion means your solar system does not trigger a property tax reassessment — this benefit expires January 1, 2027, so systems installed this year lock it in.

SDG&E transitioned to NEM 3.0 — officially the Net Billing Tariff — in April 2023. Under NEM 3.0, SDG&E pays you approximately $0.05 to $0.08/kWh for solar electricity you export to the grid — compared to the $0.46 per kilowatt-hour you pay to import electricity. This ended the one-for-one bill credit system of the original NEM program. Self-consumption is now far more valuable than export. Solar that you consume directly — or store in a battery for evening use — is worth 5 to 10 times more than solar that goes to the grid. See SDG&E's solar page for current tariff details.

San Diego homeowners with properly sized solar plus battery systems typically see their SDG&E bill drop from $250 to $500/month to $15 to $40/month — the minimum SDG&E connection fee. Over 25 years, the average San Diego homeowner with solar avoids approximately $104,000 in total utility costs. Your actual savings depend on your current bill, system size, roof orientation, shading, and how much of your solar production you self-consume. The fastest way to see your specific numbers is to run your bill through our free solar savings calculator.

Yes — exceptionally well. San Diego receives approximately 266 sunny days per year, making it one of the best solar production environments in the country. Coastal marine layer reduces production somewhat during late spring and early summer mornings, but San Diego's mild year-round climate also means panels operate at higher efficiency than in hotter inland markets. Inland San Diego County cities like Escondido, El Cajon, and Santee receive even more direct sun hours than coastal areas — making solar ROI particularly strong in East County.

Absolutely — and in SDG&E territory it makes exceptional financial sense. SDG&E's peak rate of $0.62/kWh means an EV owner charging during peak hours pays approximately $0.18 per mile — nearly the same as a gas car. Solar self-charging cuts that to under $0.02 per mile. For households with an EV, we size the solar system to cover both home energy and EV charging loads — typically adding 2 to 3 kW to the system. An EV adds approximately 300 to 400 kWh per month to your consumption — at SDG&E rates, that's $140 to $185/month in additional electricity costs that solar eliminates entirely.

The fastest way to get started is to run your SDG&E bill through our free solar savings calculator — it takes 60 seconds and gives you an estimated system size, monthly savings, and $0 down payment options based on your actual usage. From there, Ed will follow up within one hour to walk you through a full proposal specific to your home. We serve all of San Diego County including Chula Vista, Escondido, El Cajon, Santee, Oceanside, San Marcos, and surrounding communities — all SDG&E territory.