Solar Payback in Rocklin: 2026 Break-Even Math
Rocklin, California — PGE service area
When Does Solar Pay Off in Rocklin?
A 7kW system in Rocklin costs approximately $21,000 at $3/watt. With annual savings of $3,036 (based on Pacific Gas & Electric's 38.0¢/52.0¢ rate tiers), the break-even point is approximately 6.9 years.
Without Solar: Projected Pacific Gas & Electric Bills
Pacific Gas & Electric rates have increased 104% (2015-2025, CPUC Public Advocates Office). If that trend continues, the average Rocklin bill looks like this:
| Year | Est. Monthly Bill (no solar) | With Solar |
|---|---|---|
| 2026 (today) | $235/mo | ~$0/mo |
| 2031 (5 years) | $336/mo | ~$0/mo |
| 2036 (10 years) | $479/mo | ~$0/mo |
| 2041 (15 years) | $685/mo | ~$0/mo |
Projections use the 104% (2015-2025, CPUC Public Advocates Office) 10-year CAGR as a straight-line estimate. Actual rate changes vary. Solar bill estimates assume fixed system output.
The Compounding Advantage
The payback period calculation above uses today's rates. In reality, as Pacific Gas & Electric rates rise each year, your solar savings grow too, because every kWh your panels produce is worth more. This means the effective payback period is typically shorter than the static calculation suggests, and the 25-year savings figure grows significantly with each rate increase.
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Estimates on this page are based on local averages. A licensed installer will give you exact numbers for your home.
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