Solar in Mesa
Mesa is Arizona's third-largest city, sitting in the east Phoenix metro with some of the best sunshine in America. Depending on your location, you're served by either Salt River Project (SRP) or Arizona Public Service (APS)—both with different solar policies.
Why Mesa Excels for Solar
- Outstanding sunshine: 6.0 peak sun hours, 299 sunny days
- Two utility options: SRP and APS serve different areas
- Arizona tax credit: State income tax credit available
- Property tax exemption: 100% exemption on solar value
- High AC costs: Solar offsets expensive summer cooling
SRP & APS Utilities
Mesa is split between Salt River Project (SRP) and Arizona Public Service (APS). Which utility you have significantly impacts your solar options and economics.
Salt River Project (SRP)
- Rate structure: Demand-based rates for solar customers
- Demand charges: Based on peak usage, not just kWh
- Export credits: Lower than retail rate
- Strategy: Maximize self-consumption, consider batteries
Arizona Public Service (APS)
- Rate options: Multiple rate plans available
- Export credits: Varies by plan chosen
- Time-of-use: Different rates by time of day
- Strategy: Choose best rate plan for your usage pattern
Average Electricity Costs
- Mesa average: ~$0.12/kWh blended rate
- Summer peaks: Can exceed $0.15/kWh during peak hours
- AC demand: Summer bills often 2-3x winter bills
- Solar offset: Biggest savings during expensive summer
Incentives & Tax Credits
Federal Tax Credit (2026)
| Ownership Type | Federal Credit | Notes |
|---|---|---|
| Cash/Loan Purchase | None (0%) | 25D residential credit ended Dec 31, 2025 |
| PPA/Lease | 30% (to company) | 48E credit through Dec 31, 2027 |
The solar company claims the credit on leased systems and passes savings to you through lower rates.
Arizona Incentives
- State tax credit: Up to $1,000 (25% of cost, capped)
- Property tax exemption: 100% of added solar value excluded
- Sales tax exemption: Solar equipment exempt from state sales tax
- Utility programs: Check SRP/APS for current rebates and programs
Costs & Savings
Average System Costs (2026)
| System Size | Gross Cost | After AZ Credit* |
|---|---|---|
| 5 kW | $12,000-14,500 | $11,000-13,500 |
| 7 kW | $16,800-20,300 | $15,800-19,300 |
| 10 kW | $24,000-29,000 | $23,000-28,000 |
*Arizona state credit up to $1,000. No federal credit for purchased systems in 2026.
Production & Savings
- Annual production: 1,600-1,750 kWh per kW installed (excellent)
- 7 kW system output: ~11,200-12,000 kWh/year
- Annual savings: $1,200-1,500 depending on usage pattern
- Payback period: 10-13 years (honest assessment)
Utility Strategy Tips
- SRP customers: Consider battery storage to manage demand charges
- APS customers: Evaluate rate plan options carefully
- Both utilities: Maximize self-consumption during peak hours
- Summer focus: Solar offsets most expensive AC months
The Bottom Line
Mesa is one of America's best solar markets. With 6.0 peak sun hours, Arizona tax credits, and high summer AC costs to offset, solar paybacks of 10-13 years are achievable. Your utility (SRP vs. APS) matters for strategy.
Key considerations:
- Outstanding sunshine—6.0 peak sun hours
- Know your utility: SRP vs. APS have different policies
- SRP demand charges make batteries more attractive
- Arizona state credit adds up to $1,000
- Property and sales tax exemptions help economics
- PPA/Lease retains federal credit benefit
Questions About Solar in Mesa?
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