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Is Solar Worth It in San Dimas, California?

We analyzed Southern California Edison (SCE) rate books, NREL irradiance data, and California tax codes to calculate the real ROI for homeowners in 91773.

Market Snapshot

Elec. Rate
$0.27/kWh
Sun Hours
6.09
Utility Southern California Edison (SCE)
Tax Exempt Yes
Battery Required

Analyst Note: The "4kW Benchmark"

The analysis below uses a standardized 4kW system to provide a fair baseline comparison across cities. However, the average electric bill in San Dimas is $243.0.

⚠️ Most homes here will need a larger system (8kW–12kW) to reach 100% offset. Use the calculator below for your exact numbers.

Many homeowners in San Dimas are asking if solar panels still make financial sense after the big utility changes. With Southern California Edison's (SCE) high rates and new 'net billing' rules, the answer is absolutely yes—but the strategy has shifted. You now need a battery to truly slash your electric bills and secure your energy independence.

Benchmark Cost Analysis

What Do Solar and Battery Systems Cost in San Dimas?

The key to unlocking real savings is a combined solar and battery system, which has a gross cost around $23,500 for a typical San Dimas home. After the primary federal incentive, your final cost is closer to $16,450. While you might see quotes for 'solar-only' systems around $11,500, they simply don't provide a strong return on investment under SCE's current rules.

Incentives & Tax Credits

Tax Credits & Local Incentives for San Dimas

The 30% Federal Residential Clean Energy Credit is the most significant incentive available. It's a dollar-for-dollar credit that slashes the cost of a $23,500 solar and battery system by $7,050. Additionally, California's property tax exclusion means your home's value increases with solar panels without raising your property tax bill.

Net Metering: Southern California Edison (SCE)

Policy Status

NEM 3.0 (2023)

Battery Priority

Critical 🔋

Understanding SCE's NEM 3.0 Net Billing Policy

The biggest challenge for new solar owners is SCE's NEM 3.0 policy. Under the old rules, you'd get nearly full credit for excess power sent to the grid. Now, SCE buys your power for a tiny fraction (~$0.06/kWh) of what they charge you for it (~$0.27/kWh). This makes exporting power a financial loss. The only winning move is to store that excess energy in a battery and use it yourself when SCE's rates are highest in the evening.

Projected Savings

Projected Monthly & Annual Savings

By generating and storing your own solar energy, a home battery system can generate annual savings of around $1,700. This strategy is designed to combat SCE's time-of-use rates, especially during the 4-9 PM peak, and can wipe out nearly 60% of your average $2,916 yearly electricity bill. The payback period for a properly sized system lands at a very reasonable 9.7 years, after which the power is virtually free.

Local Questions Answered

Why is a battery essential with SCE in San Dimas now?
Because SCE's NEM 3.0 tariff makes exporting your solar power unprofitable. A battery lets you store your own power to avoid selling it to SCE for pennies, then use it to bypass their expensive peak rates from 4-9 PM. It puts you back in control.
What's a realistic payback period for solar and battery in 2026?
For the average San Dimas home, the solar and battery system payback is between 9 and 10 years. After that, you're enjoying decades of energy savings while your neighbors continue to pay SCE's ever-increasing rates.
How does the San Gabriel foothills climate affect solar panel performance?
The abundant sun here is perfect for solar production. High-quality panels are designed to handle the intense summer heat with minimal efficiency loss, ensuring your system generates a massive amount of clean energy year-round.

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* Calculations based on Southern California Edison (SCE) residential rates (0.27/kWh).

Data Transparency & Methodology

Estimates for San Dimas, California are produced by the SunCents Solar Engine (v1.2). We combine the following verified or standard industry sources:

Performance (PV production)

NREL PVWatts — modeled annual and hourly AC output (kWh), solar radiation, and system losses for a standardized array size so cities can be compared fairly.

nrel.gov

Electricity rates (tariffs)

U.S. Energy Information Administration (EIA) — state-level average retail electricity prices ($/kWh) and supporting series for economic context.

eia.gov

Incentives & programs

DSIRE — state and local rebates, net metering, and policy programs (summarized for readability; always confirm eligibility with a tax or solar professional).

dsireusa.org

Federal tax credit (ITC)

Investment Tax Credit — federal residential solar credit (e.g. 30% of qualified costs where applicable); rules change with statute—verify with a qualified advisor.

energy.gov

Utilities & interconnection

Where shown, local utilities (e.g. APS, PG&E, FPL, and other IOUs or munis) are mapped from public interconnection, tariff, or service-territory references so net metering and rider rules match your area—not generic national averages.