Solar resource
Your solar production in San Jose
5.14 avg peak sun hours/day
Monthly avg solar radiation (kWh/m²/day) — San Jose, CA. Bars update to show estimated kWh production when you use the calculator above.
Utility rate
Pacific Gas and Electric (PG&E) electricity rate
$0.3/kWh residential
- Utility
- Pacific Gas and Electric (PG&E)
- Residential rate
- $0.3/kWh (blended)
PG&E is subject to CPUC NEM 3.0, which took effect in April 2023 for new solar customers. Under NEM 3.0, excess solar exported to the grid is compensated at the Avoided Cost Calculator (ACC) rate — approximately $0.04–$0.08/kWh rather than the full retail rate (~$0.30/kWh). Despite the lower export credit, PG&E's high retail rate means self-consumed solar is extremely valuable. A 6 kW system that offsets $0.30/kWh electricity on the consumption side generates the fastest solar payback period of any major California metro — under 5 years after the federal tax credit. San Jose homeowners should size systems to maximize self-consumption rather than export.
Affiliate slot
Ready to go solar?
Compare quotes from vetted San Jose solar installers — no obligation, no sign-up required to see prices.
Incentives
Available solar incentives in San Jose, CA
Federal + state + utility
| Incentive | Type | Value | Scope |
|---|---|---|---|
| Federal Solar Investment Tax Credit (ITC) | Tax Credit | 30% of system cost | Federal |
| California Property Tax Exclusion for Solar | Exemption | 100% of added assessed value from solar installation | State |
| PG&E NEM 3.0 Net Billing | Net Metering | ACC export credit (~$0.04–$0.08/kWh for exported solar energy) | Utility |
| Self-Generation Incentive Program (SGIP) — Battery Storage | Rebate | $150–$1,000 per kWh of battery capacity (income-qualified tiers higher) | State |
Incentive amounts and eligibility rules change. Verify current terms with your installer and a tax professional before installation.
System cost
Cost breakdown (6 kW default)
- Gross system cost
- $17400
- Federal ITC (30%)
- −$5220
- Net system cost
- $12,180
- Installed cost per watt
- $2.9/W
Lawrence Berkeley National Laboratory Tracking the Sun 2024 — California median installed cost for systems 3–10 kW. Bay Area labor costs are above the California average; $2.90/W is a conservative estimate for San Jose installations.
Payback & long-term value
25-year outlook
- Annual savings (yr 1)
- $2,605
- Simple payback period
- 4.7 years
- 25-year net savings
- $52945
- Assumed annual rate increase
- 2.5%/year
25-year estimate uses flat electricity rate for conservative baseline. Accounting for 2.5% annual rate increases, lifetime savings increase substantially.
Affiliate slot
Shop solar equipment
Browse solar panels, inverters, and mounting hardware for DIY or installer supply purchases.
How it works
How solar savings work in San Jose
- Your panels capture Bay Area sunshine San Jose averages 5.14 peak sun hours per day — less than Sacramento (more fog in shoulder months) but still well above the national average. The South Bay gets less coastal fog than San Francisco, making it a reliably productive solar location. A 6 kW system in San Jose produces roughly 8,682 kWh per year.
- An inverter converts DC to AC power A string inverter or microinverters convert DC electricity from your panels into AC electricity your home uses. Modern inverters achieve 96–99% conversion efficiency.
- You avoid buying expensive PG&E electricity Every kWh your system produces during daylight avoids purchasing electricity from PG&E at ~$0.30/kWh — among the highest residential rates in the United States. A 6 kW system produces about 8,682 kWh/year, saving approximately $2,605 annually. PG&E's high rate is the primary reason San Jose has one of the shortest solar payback periods in the country.
- Under NEM 3.0, self-consumption is the priority PG&E's NEM 3.0 program credits excess solar exported to the grid at the Avoided Cost Calculator rate (~$0.04–$0.08/kWh), far below the retail rate. Design your system to maximize self-consumption — size it to your daytime load and consider a battery for evening shifting. Every kWh consumed on-site saves $0.30; every kWh exported saves only $0.04–$0.08.
- You claim the 30% federal tax credit In the tax year your system is installed, claim a 30% federal Investment Tax Credit on the full installed cost. On a $17,400 system, that's $5,220 off federal taxes — reducing the net cost to $12,180.
- Your savings compound as PG&E rates rise PG&E rates have increased significantly year over year (historically ~2.5%+/year in recent years). Every rate increase amplifies the value of your solar savings while your system cost stays fixed. A 6 kW system in San Jose nets approximately $52,945 over 25 years after recovering the installation cost — the highest 25-year savings figure among major California metros driven by PG&E's high rates.
FAQ
Common solar savings questions for San Jose, CA
How much can I save with solar in San Jose?
A 6 kW system in San Jose produces roughly 8,682 kWh/year and saves approximately $2,605/year at PG&E's current blended rate of $0.30/kWh. After the 30% federal tax credit ($5,220), the net system cost is about $12,180, with a payback period of approximately 4.7 years — one of the shortest in the country. Estimated 25-year net savings: $52,945.
Why does San Jose have the shortest solar payback period among major metros?
San Jose is served by PG&E, which charges the highest residential electricity rates of any major California investor-owned utility — approximately $0.30/kWh blended. Higher electricity rates mean solar savings are larger per kWh produced. Even though San Jose gets somewhat fewer sun hours than Phoenix or Sacramento, the combination of PG&E rates, a strong solar resource, and the 30% federal ITC produces a payback under 5 years. No other major U.S. metro combines this level of electricity costs with this level of solar production.
How does PG&E NEM 3.0 affect solar in San Jose?
PG&E NEM 3.0 (effective April 2023) replaced retail-rate net metering with a much lower export credit (~$0.04–$0.08/kWh) for new solar customers. This means the economics of large systems designed to export excess power are less attractive than under NEM 2.0. However, self-consumed solar is still credited at the full retail rate ($0.30/kWh), which remains excellent economics. San Jose homeowners should right-size systems for their daytime load and consider battery storage to shift solar to the high-cost evening peak.
Should I add battery storage with solar in San Jose?
Battery storage (such as the Tesla Powerwall or Enphase IQ Battery) is especially valuable for San Jose PG&E customers under NEM 3.0. A battery stores excess midday solar production and releases it during PG&E's high-rate evening hours, converting what would be a low-value export credit into a high-value self-consumption saving. California's SGIP rebate further reduces battery costs. The payback math improves meaningfully when storage is factored in.
Does California have a property tax exemption for solar in San Jose?
Yes. California Revenue & Taxation Code §73 excludes the value added by a solar system from property tax reassessment, through at least January 1, 2027. San Jose home values are high — a typical 6 kW solar installation adds $18,000–$24,000 to home value. At Santa Clara County's ~1.15% effective property tax rate, this exemption saves $207–$276/year in property taxes.
How many solar panels does a San Jose home need?
A typical San Jose home using 500–800 kWh/month needs a 4–7 kW system — roughly 11–18 panels at 380–400 W each. Under NEM 3.0, it's better to slightly undersize than oversize, since exported excess production earns only ~$0.04–$0.08/kWh. Use the calculator above with your actual monthly PG&E bill to get a tailored estimate.
Sources
Data sources and freshness
- https://pvwatts.nrel.gov/
- https://www.pge.com/en_US/residential/rate-plans/rate-plan-options/tiered-rate-plan/tiered-rate-plan.page
- https://www.cpuc.ca.gov/nem3/
- https://openei.org/apps/USURDB/
- https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=RTC§ionNum=73
- https://www.selfgenca.com/
- https://emp.lbl.gov/tracking-the-sun
- https://www.energy.gov/eere/solar/homeowners-guide-federal-tax-credit-solar-photovoltaics
- https://dsireusa.org/
Related tools
More free homeowner tools
Disclaimer: This calculator provides estimates for informational purposes only — not financial or investment advice. Solar savings depend on actual shading, roof orientation, energy usage patterns, rate changes, and equipment performance. Consult a licensed installer and a tax professional before making purchasing decisions. Verify incentive eligibility with official sources. Data last verified 2026-04-19.