Two Mesa homeowners can have the same roof, the same panel count, and the same asking price, and still walk into completely different closings once solar enters the conversation. The reason has less to do with whether the system is owned or leased and more to do with a fact most sellers never think to check: which utility actually serves that address. Mesa is unusual among East Valley cities because it isn't served by a single power company. Depending on where a house sits, the electric bill comes from Salt River Project, from Arizona Public Service, or from the City of Mesa's own municipal electric utility. Each one handles an existing solar setup differently the moment a sale is in motion, and that difference shows up in escrow, not in the listing photos.
Mesa Runs On Three Electric Grids, Not One
Most East Valley cities are straightforward. Chandler and Gilbert are almost entirely SRP territory. Mesa splits. The City of Mesa's Energy Resources Department runs its own solar program for residents inside the city's electric service area, and its own program page tells anyone who happens to be an SRP customer to go check SRP's website instead, because they're a different customer of a different utility even though they share a zip code. Layer APS into that same map and a seller can't assume anything from a neighbor's experience two doors down. The neighbor might be on a different grid entirely.
That matters before a listing goes live, not after an offer comes in. A buyer's lender, a title company, and the solar company itself will all eventually ask which utility serves the property, and the answer changes what paperwork gets triggered. Confirming it is as simple as checking the provider name printed at the top of a recent electric bill or using the address lookup tools each utility maintains.
If SRP Powers Your Panels
SRP customers with solar aren't on a standard residential rate. They're required onto one of SRP's solar-specific plans, most commonly E-27, which layers a demand charge on top of energy use, a charge based on the highest 30-minute stretch of grid draw during on-peak hours rather than total consumption. That structure is part of why a solar-only system without a battery often produces smaller savings on SRP than sellers expect, a detail worth disclosing rather than assuming the buyer already understands.
SRP also runs a Time-of-Use Export Plan that credits excess solar at a fixed 3.45 cents per kilowatt-hour, a rate locked in when the system interconnects. Sellers marketing a home with a favorable legacy plan should know SRP is retiring its older E-13 and E-14 solar plans by the November 2029 billing cycle, which means any pitch built around a grandfathered rate has a shelf life the buyer should hear about directly.
The detail that catches SRP sellers most often involves the Renewable Energy Credit Purchase Program. SRP's own program terms state plainly that the agreement is not transferable to a new homeowner if the home sells. The buyer has to sign a new agreement and meet eligibility requirements from scratch. Sellers under a lease are already excluded from this program in the first place, since the leasing company, not the homeowner, holds the rights to the credits. Either way, this is not something a buyer inherits automatically, and it's worth spelling out in writing before anyone signs a contract expecting otherwise.
If APS Powers Your Panels, The Math Looks Different
APS handles export credits through what it calls an Avoided Cost rate, running roughly 7.7 to 8.9 cents per kilowatt-hour in 2026, noticeably higher than SRP's fixed export rate. APS residential solar customers also don't face a demand-charge overlay comparable to SRP's E-27 structure, so the resale conversation tends to center more cleanly on ownership status and remaining warranty than on rate-plan mechanics. That doesn't make an APS sale friction-free. It just moves the friction toward the financing structure of the system itself rather than the utility's rate design.
The Paperwork That Doesn't Care Which Utility You're On
Regardless of which grid serves the roof, two things apply the same way everywhere in Arizona.
First, a financed solar system commonly carries a UCC-1 fixture filing, a lien notice recorded against the property under Arizona's fixture-filing statute, A.R.S. § 47-9501, in the same place mortgages are recorded. A buyer's lender will require that filing cleared or subordinated before funding, and that process runs on the solar lender's timeline, not the escrow calendar.
Second, leased and power-purchase-agreement systems require the buyer to separately qualify with the solar company and formally assume the contract, a step that has nothing to do with the buyer's mortgage approval and can take weeks to complete on its own.
Arizona REALTORS® revised its Solar Addendum in November 2025 specifically because members kept running into these transfer delays, and the standard Residential Resale Real Estate Purchase Contract itself was updated again in February 2026. Both changes are recent enough to signal the industry is still actively adjusting to how often solar slows a closing, which is a useful thing for a seller to know before assuming a routine 30-day escrow will hold.
| SRP | APS | |
|---|---|---|
| Rate structure for solar customers | Mandatory demand-charge plan (E-27 or newer E-16/E-28) | Standard export/net billing, no separate demand-charge overlay |
| Export credit as of 2026 | Fixed 3.45 cents per kWh under the Time-of-Use Export Plan | Avoided Cost rate of about 7.7 to 8.9 cents per kWh |
What This Means If You Own Your System Outright
Owned systems sidestep almost everything above. There's no lease to assume, no UCC-1 to clear, no solar company qualifying a buyer separately from the lender. The panels convey with the house the way a built-in appliance would. Arizona also exempts the added assessed value of a solar system from property tax automatically, without any application, and Maricopa County's effective property tax rate sits low enough, around 0.67 percent, that the exemption is real but modest in dollar terms. National research is often cited putting the resale premium for owned solar somewhere around 4 percent, though that figure comes from broad market analysis rather than anything specific to Mesa, and it shouldn't be quoted to a buyer as a guarantee.
The HOA Question Almost Never Ends Up Being The Real Problem
Mesa has a heavy concentration of HOA-governed subdivisions, and sellers sometimes assume the architectural review committee will be the hardest part of any solar-related conversation. Arizona law, A.R.S. § 33-1816, prevents an HOA from prohibiting rooftop solar outright. An HOA can set reasonable placement guidelines, but it cannot block installation, and most East Valley HOAs approve standard rooftop systems without significant delay. The friction that actually derails timelines lives with the utility and the financing company, not the HOA board.
Before You List
- Pull a recent electric bill and confirm whether SRP, APS, or the City of Mesa's Energy Resources Department is the provider at that specific address
- Call that provider's account or solar transfer line before listing, not after an offer arrives
- Locate the loan or lease agreement and read the transfer, assignment, and buyout sections in full
- Ask a title company to run a UCC-1 search on the property ahead of time rather than discovering a filing during escrow
- Make sure any offer uses the current Arizona REALTORS® Solar Addendum rather than an outdated version
A Few Common Questions
If I own my panels outright, is the sale automatically simple? Mostly. There's no lease or UCC-1 to untangle, though it's still worth sharing system age, panel warranty details, and any past repair history with the buyer directly.
What if my buyer doesn't want to assume my lease? This is a negotiation, not a dead end. Some sellers buy out the remaining lease before closing. Others adjust price to offset the buyout cost, or the solar company itself may offer a transfer incentive worth asking about directly.
Can my HOA block the sale over the solar system? No. State law prevents an HOA from prohibiting rooftop solar, though it can require compliance with reasonable placement rules already in place.
If your Mesa home has solar and you're weighing a sale, the utility on your bill is the first thing worth sorting out, not the last. Rebecca Smith Real Estate can walk through what your specific setup means for pricing, disclosure, and timing before you list.
