Tucson is an excellent market for solar, with nearly identical sunshine to Phoenix but a smaller, slightly more expensive installer market and a different utility — Tucson Electric Power (TEP). Understanding how TEP's net billing rates affect your savings is essential for Tucson homeowners evaluating solar.
The average installation cost in Tucson is $2.15 per watt — about $0.02/watt above the statewide average due to the smaller installer market. For statewide context, see our complete Arizona solar cost guide. And to see how TEP's buyback rates affect your savings, read our TEP net billing guide.
Tucson Solar Costs by System Size (2026)
| System Size | Gross Cost | After Incentives | Est. Monthly Savings |
|---|---|---|---|
| 5 kW | $10,750 | $6,525 | $85–$110 |
| 7 kW | $15,050 | $9,535 | $120–$155 |
| 8 kW | $17,200 | $11,040 | $135–$175 |
| 10 kW | $21,500 | $14,050 | $170–$215 |
| 12 kW | $25,800 | $17,060 | $200–$255 |
TEP Territory and Net Billing
Virtually all of Tucson proper and surrounding communities (Marana, Oro Valley, Sahuarita, parts of Pima County) are served by Tucson Electric Power (TEP). TEP transitioned away from traditional net metering to a net billing model in 2017 and currently credits exported solar at approximately $0.057/kWh — the lowest export rate among Arizona's three major utilities.
This makes self-consumption even more critical in Tucson than in Phoenix. Electricity you consume directly from your panels saves you ~$0.13–$0.15/kWh; electricity you export earns only $0.057/kWh. Size your system to cover your actual consumption rather than massively overshooting it.
Tucson's Climate Advantages for Solar
Tucson actually has some solar advantages over Phoenix worth noting:
- Slightly cooler temperatures: Tucson sits at ~2,400 ft elevation. Summer highs average 100–104°F vs Phoenix's 105–112°F, meaning panels lose slightly less output to heat
- Similar sun hours: Tucson receives approximately the same annual solar irradiance as Phoenix — 1,650+ kWh/kW/year is a solid production estimate for both cities
- Strong monsoon season: While monsoon rains can temporarily reduce output in July–September, they also clean your panels and reduce overall cooling loads
Tucson Neighborhoods and Solar Considerations
Northwest Tucson (Marana, Oro Valley)
Newer construction, many tile roofs, good installer access. HOAs are common but Arizona law protects your solar rights. Installer competition is good in this corridor.
East Tucson (Rita Ranch, Vail, Saguaro Ranch)
Fast-growing areas with newer homes. Mix of shingle and tile roofs. TEP territory throughout. Good solar market with multiple installers competing for business.
Central and Midtown Tucson
Older homes, often with flat or low-slope roofs common to Tucson's Spanish colonial architecture. Flat roofs allow optimal panel tilt placement but require experienced installers familiar with waterproofing flat roof penetrations.
South Tucson and Sahuarita
More rural feel with larger lots. Smaller installer market means fewer quotes to choose from — worth driving up to the main Tucson market for bids from larger companies.
Calculate Your Tucson Solar Savings
Select TEP in our calculator to get savings estimates that reflect Tucson's actual buyback rates.
Calculate My Savings →Tucson Permitting
City of Tucson permits are handled through the Development Services Department. Pima County handles unincorporated areas. The typical timeline:
- City/county permit: 2–4 weeks in most Tucson jurisdictions
- TEP interconnection: 4–8 weeks from application to Permission to Operate
- Total from contract to activation: 8–14 weeks
Older Home Considerations in Tucson
Tucson has a significant stock of older homes (1950s–1980s) with aging electrical panels and flat or low-slope roofs. Before installing solar, verify that your main electrical panel has adequate capacity (200A recommended) and that your roof has sufficient remaining life. Many Tucson installers include a basic roof inspection as part of the site survey — ask if this is included.
Tucson vs Phoenix: Solar Savings Comparison
| Factor | Tucson (TEP) | Phoenix (APS) |
|---|---|---|
| Avg install cost | $2.15/W | $2.10/W |
| Export credit rate | $0.057/kWh | $0.068/kWh |
| Retail rate | ~$0.13/kWh | ~$0.15/kWh |
| Avg summer bill | $130–$220 | $250–$400 |
| Typical payback | 7–8 years | 6–7 years |
Tucson's slightly lower retail rate and lower export credit rate result in modestly lower annual savings than Phoenix for the same system size. However, Tucson's lower electricity bills also mean smaller recommended system sizes and lower upfront costs.
Getting the Best Tucson Solar Price
Tucson has fewer installers than Phoenix, which means less pricing competition. To get the best deal: get quotes from both local Tucson companies and larger statewide installers who serve the Tucson market. Don't accept the first quote — the effort of getting two more quotes typically saves $1,500–$3,000. For tips on evaluating proposals, see our how to go solar in Arizona guide.
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