APS vs SRP: Solar Net Metering and Fees in Arizona (2026)

If you live in metro Phoenix, the single biggest thing shaping whether your solar quote actually pencils out isn't the panel brand or even the price per watt — it's which utility serves your meter. APS and SRP are right next to each other, sometimes street by street, but they treat rooftop solar in completely different ways. I'm an independent solar broker. I don't install, so I have no system to sell you. What I do is read the quote you already got and tell you straight whether it makes sense for your house and your utility. Here's how to think about the APS-versus-SRP difference before you sign anything.

First, find out who actually serves you

This sounds obvious, but I've seen reps get it wrong, and the whole savings math falls apart when they do. APS (Arizona Public Service) and SRP (Salt River Project) carve up the Valley in a patchwork. Two neighbors on the same block can be on different utilities. Pull a recent bill and look at the provider name and rate plan printed on it. If your quote was built assuming the wrong utility, none of the numbers downstream are trustworthy.

How APS treats solar exports

APS generally uses an export-rate structure rather than old-school one-for-one net metering. In plain terms: the power your panels send back to the grid is credited at an export rate that is typically lower than the retail rate you pay to buy power. That rate gets reviewed and can step down over time, and the rate plan you're on (including time-of-use periods) affects how much your own usage costs during peak hours.

What this means for you as a buyer:

• Solar on APS rewards using your own power as you make it, and increasingly rewards pairing with a battery so you lean on exports less.
• The time of day you use electricity matters. A system sized to a flat rate plan may look different once you're on a time-of-use plan.
• Any "savings" a rep shows you depends on the export rate and plan assumptions baked into the spreadsheet. Ask to see them.

I'm describing the general shape here, not a permanent rate. APS terms and export credits change, so confirm the current numbers directly with APS or the Arizona Corporation Commission before you commit.

How SRP treats solar — the demand-charge twist

SRP is the one that trips people up. SRP customers with solar are generally steered onto a plan built around a demand charge, not a simple net-metering credit. A demand charge bills you partly on your single highest spike of usage during peak hours in a billing period — not just your total kilowatt-hours.

That changes the game. On a demand-rate plan, your savings come less from sheer panel output and more from flattening those peak spikes. Two homes with identical panels can see very different bills depending on whether they run the AC, dryer, and oven all at once on a summer afternoon. This is also why batteries and load management often matter more on SRP than on APS — the battery can shave the peak that the demand charge is measuring.

If your SRP quote shows big savings purely from production and never mentions demand charges or peak-shaving, that's a flag worth a second opinion. SRP's plans and rates change too, so verify the current plan terms with SRP directly.

Why the same panels save different amounts on each utility

Here's the part reps don't always spell out: a system that's a no-brainer on one utility can be mediocre on the other. APS rewards self-consumption and steady export offset. SRP rewards taming your peak. So the right system size, the right battery decision, and even the right rate plan are different depending on which side of the line your house sits on. A one-size-fits-all proposal that ignores this is a proposal I'd want to look at closely.

Fees and the lines on your quote that hide them

Utility structure is only half the story. The other half is what's inside the quote itself. Across both utilities, the things I check first are the price per watt and any padded "dealer fee" buried in financed deals. As a rough directional gauge, cash and straightforward loan pricing often lands somewhere around $2.50 to $3.50 per watt installed — but that's a ballpark to check your own number against, not a fixed rate. Long-term financing can quietly add thousands through a fee baked into the system price, so compare the cash price to the financed price line by line.

One more thing on incentives: if a rep is still selling you on a 30% federal residential tax credit for a 2026 purchase, slow down. The federal residential credit changed and ended for new 2026 buyers under the recent budget law. Treat anyone still quoting that old 30% number as out of date, and check current federal, Arizona, and local program rules before you count on any incentive.

The bottom line before you sign

Arizona solar can absolutely make sense — but the math is utility-specific, and the rules move. Confirm who serves your meter, confirm the current export rate or demand-charge plan with APS or SRP yourself, and make sure your quote's savings story actually matches your utility's structure. If it doesn't, that's exactly the kind of thing a free second look catches.

Get a free second opinion on your Arizona quote

• Run your numbers with the free solar quote calculator to sanity-check price and savings before you sign.
• Send me your proposal for a no-cost, independent review at reviewingsolar.com — I'll flag markup, fees, and assumptions that don't fit your utility.
• Want to talk it through? Book a time with me and we'll go over your APS or SRP quote together.