Mesa is split between two utility providers — the northern part of the city is served by APS, while southern and eastern Mesa falls under SRP territory. This matters for solar: APS customers receive an avoided-cost export credit for excess energy, while SRP customers are on the Customer Generation price plan, which uses a different rate structure with a demand charge component. Before signing with any solar company in Mesa, confirm which utility serves your address — it significantly affects system sizing, expected savings, and which financing or rate plan makes the most sense. The average Mesa homeowner needs a 12–14 kW system at a cost of $26,000–$30,000 before the federal tax credit. Mesa receives approximately 6.5 peak sun hours per day, making it one of the strongest solar markets in the country. All solar installers listed here are licensed with the Arizona Registrar of Contractors and verified active.