Solar Panel Cost in San Mateo, California (2026 Prices)
San Mateo, California — PGE service area
What Does Solar Cost in San Mateo in 2026?
Solar panel prices have stabilized in California. In San Mateo, a typical residential system runs around $3/watt installed — so a 7kW system is ~$21,000 and a 10kW system is ~$30,000 before any incentives.
| System Size | Est. Cost (~$3/W) | Est. Annual Savings | Best For |
|---|---|---|---|
| 6kW | $18,000 | $3,036/yr | Bills under $176/mo |
| 7kW | $21,000 | $3,036/yr | Most common residential size |
| 10kW | $30,000 | $3,036/yr | Bills over $282/mo or EV |
| 12kW+ | $36,000 | $3,036/yr | High usage + battery + EV |
What Affects Solar Pricing in San Mateo?
- ›Installer competition in San Mateo — more quotes means more competitive bids
- ›Panel brand and efficiency tier (budget vs. premium)
- ›Roof condition, pitch, and shading
- ›Pacific Gas & Electric interconnection fees and NEM 3.0 enrollment
- ›Battery storage addition (adds $8,000-$15,000 typically)
More San Mateo Solar Guides
Ready to See Real Numbers for San Mateo?
Estimates on this page are based on local averages. A licensed installer will give you exact numbers for your home.
Calculate My Savings