Why Arizona Is a Solar Powerhouse (Despite Net Metering Replacement)
Arizona is one of the sunniest places on Earth, with average 6.5+ peak sun hours per day in Phoenix and Tuscon. That's 45% more sun than the national average (4.5 hours). Yet, Arizona's solar adoption rate (15% of homes) lags behind states like California (25%) and New Jersey (20%).
The reason? Policy uncertainty. In 2017, Arizona's Corporation Commission (ACC) voted to replace net metering with a "Resource Comparison Proxy" (RCP) that pays solar exports at roughly 60% of the retail rate. However, Arizona's solar property tax exemption and high summer cooling costs still make solar a smart investment for most homeowners.
📊 Data Point: Arizona Cooling Costs
According to APS, the average Arizona home uses 1,200 kWh/month in summer (vs. 600 kWh/month in winter). At $0.15/kWh, that's $180/month for A/C alone. Solar can reduce this by 70-90%, saving $125-160/month during peak summer.
Understanding Arizona's "Resource Comparison Proxy" (RCP) for Solar Exports
When Arizona replaced net metering in 2017, they introduced the Resource Comparison Proxy (RCP). Here's how it works:
- instead of crediting solar exports at retail rates (like New York or California under NEM 2.0), Arizona utilities pay a fixed RCP rate that's updated annually.
- In 2026, the RCP rates are approximately:
- APS: $0.09/kWh (vs. retail $0.15/kWh)
- TEP: $0.08/kWh (vs. retail $0.14/kWh)
- SRP: Varies by rate plan (typically $0.07-0.10/kWh)
- The good news: Arizona's high sun exposure means most solar is self-consumed during the day when A/C is running. Only 15-25% of solar production is typically exported.
Pro Tip: If you're with APS or TEP, consider adding a battery to capture excess solar instead of exporting it at the low RCP rate. With the federal tax credit (30%), a 10 kWh battery costs ~$7,000-8,000 after incentives.
Arizona Utilities: How Your Electric Rate Affects Solar Savings
Arizona has three major utilities, each with different rates and solar policies:
| Utility | Avg Import Rate | RCP Export Rate (2026) | Solar Policy |
|---|---|---|---|
| APS | $0.15/kWh | $0.09/kWh | Moderate – RCP fixed annually |
| TEP | $0.14/kWh | $0.08/kWh | Moderate – similar to APS |
| SRP | $0.12/kWh | $0.07-0.10/kWh | Complex – multiple rate plans |
| Municipal | $0.10-0.13/kWh | Varies | Varies – some still have net metering |
Arizona Solar Costs in 2026: What to Expect
Arizona has moderate solar installation costs – higher than Florida (due to licensing requirements) but lower than California (due to fewer permitting hurdles).
Here's a realistic cost breakdown for a 7 kW system (typical for a 2,000 sq ft Arizona home with central A/C):
| Component | Economy | Standard | Premium |
|---|---|---|---|
| Panels (Tier 1/2/3) | $9,500 | $12,500 | $16,500 |
| Inverter (String/Micro) | $1,500 | $2,500 | $3,500 |
| Permitting & Labor | $2,500 | $3,500 | $4,500 |
| Total Before Incentives | $13,500 | $18,500 | $24,500 |
| After Federal Tax Credit (30%) | $9,450 | $12,950 | $17,150 |
✅ Case Study: Roberto's Phoenix Home
Roberto lives in Phoenix (APS territory) and was paying $285/month for electricity in summer (heavy A/C usage). He installed a 7.2 kW system in March 2025 for a quoted price of $19,800. After the federal tax credit (30% = $5,940), his net cost was $13,860. His solar system now covers 82% of his usage, and his summer bills dropped to $65/month. His payback period is 6.8 years.
Arizona Solar Incentives Beyond the Federal Tax Credit
Arizona has fewer state-level incentives than New York or California, but the ones that exist are valuable:
- Solar Property Tax Exemption – Arizona law (A.R.S. § 42-1116) exempts 100% of the added home value from property taxes. For a $20,000 solar system, this saves $200-400/year in property taxes (depending on local rates).
- APS Solar Partner Program – APS offers a battery incentive program that pays $0.04/kWh for discharging your battery during peak events. For a 10 kWh battery, this can add $150-300/year in additional savings.
- TEP Solar Rebate (Income-Qualified) – TEP offers an additional $0.25/W rebate for low-income customers (up to $1,500 for a 6 kW system). Check eligibility at tep.com/solar.
- Federal Tax Credit (30%) – All Arizona homeowners qualify for the federal solar tax credit through 2032. There's no state tax credit, but the property tax exemption is equivalent to a $2,000-4,000 one-time benefit.
Common Mistakes Arizona Homeowners Make with Solar
Having helped many Arizona homeowners go solar, here are the top mistakes I see:
- Sizing the system too small. With Arizona's high A/C usage, a 6 kW system might only cover 60-70% of summer usage. Size for 90% of winter usage, not 100% of summer usage.
- Not considering battery storage. While batteries aren't essential in Arizona (unlike California under NEM 3.0), they can still improve economics by avoiding RCP exports. Plus, batteries provide backup during monsoon season outages.
- Ignoring roof condition. Arizona's intense sun (UV index 11+) degrades roofs faster than in northern states. If your roof is 12+ years old, replace it before (or with) solar. Removing and reinstalling panels in Arizona costs $2,000-3,000.
- Choosing the wrong APS rate plan. APS has multiple rate plans (Savers Choice, Peak Time of Day, etc.). Some are better for solar customers than others. Ask your installer to model your savings under different rate plans.
Frequently Asked Questions About Arizona Solar
After the federal tax credit (30%), a typical 6 kW system costs $11,000-14,000 in Arizona. APS and TEP territories have higher electricity rates ($0.14-0.16/kWh), making solar payback faster (6-8 years). SRP territory has lower rates but unique rate structures.
Arizona replaced net metering in 2017 with 'Resource Comparison Proxy' (RCP). Under RCP, solar exports are credited at a fixed rate that changes annually. In 2026, the RCP rate is approximately $0.09/kWh for APS and $0.08/kWh for TEP – about 60% of the retail rate. However, Arizona's high sun exposure (6.5+/day) means most solar is self-consumed.
Yes. Arizona has some of the highest peak sun hours in the country (6.5+/day). While summer cooling costs are high ($300-500/month for A/C), solar production peaks during the day when A/C usage is highest. A properly sized system can reduce summer electric bills by 70-90%.
Arizona offers a 100% property tax exemption for solar installations. This means adding a $20,000 solar system won't increase your home's assessed value for property tax purposes. This is a significant advantage over states like California that have partial exemptions.