Mesa gets the same abundant Arizona sun as the rest of the Valley — over 300 days per year — but SRP’s rate structure means solar economics work differently here than in APS territory. Solar can still reduce your bills meaningfully, especially when designed around self-consumption rather than grid export. Key factors that shape your outcome: whether your address is served by SRP or APS (most of Mesa is SRP), which SRP solar rate plan you select (demand-based vs. export-based), whether battery storage makes sense for your usage pattern, and your peak usage hours and overall monthly consumption.
Salt River Project (SRP) is the primary utility serving Mesa homeowners. SRP’s solar rate structure is notably more complex than neighboring APS, and plan selection has a major impact on long-term savings.
SRP offers two categories of solar rate plans: demand-based and export-based. Demand-based plans (Customer Generation and Average Demand) offer the lowest usage rates but include monthly demand charges based on your peak 30-minute or 60-minute on-peak usage — a single appliance spike can drive a large charge. Export-based plans (Time-of-Use Export and EV Export) carry no demand charge but compensate excess solar generation at just $0.0345/kWh, which is well below retail. SRP’s export rate is among the lowest of any major utility in Arizona and is updated annually rather than locked for 10 years, making long-term savings harder to predict. Battery storage is strongly advisable for SRP customers — storing and self-consuming your solar production is worth significantly more than exporting it at SRP’s rate.
A smaller portion of Mesa addresses fall within APS territory. APS customers receive a higher export rate (currently around $0.069/kWh), no demand charges on standard solar plans, and a 10-year locked export rate — making the solar economics more straightforward than SRP.
Knowing which utility serves your specific address is the first step. For SRP customers, battery storage and a self-consumption strategy are key to maximizing solar value.
Most residential systems in Mesa run between 6kW–10kW, with battery storage increasingly common given SRP’s low export rate — keeping production in-home is far more valuable than selling it back at $0.0345/kWh. Financing options include cash purchase, solar loans, and lease/PPA arrangements. Before comparing price per watt across quotes, evaluate projected self-consumption rate, which SRP rate plan the installer is recommending, warranty terms, and the installer’s specific experience with SRP billing.
