TL;DR: If you have leased or PPA solar in Utah — Sunrun, Vivint legacy, Sunnova, SunPower, or Tesla Solar lease — you can absolutely add a battery. The leasing company owns the panels and inverter. They don't own your house, your main service panel, or a battery you buy. We AC-couple a new battery at your main service panel, downstream of where their lease ends. The lease keeps running. The battery is yours. The leasing company doesn't sign off, approve anything, or get a vote. Net cost on a Tesla Powerwall 3 retrofit is $11,495 in Utah after the $2,500 Wattsmart + Tesla rebate stack.
The Vivint / Sunrun reality in Utah
The thing nobody talks about: Vivint Solar was a Lehi company. About 30 minutes from where I'm writing this. At their peak they were the #2 residential solar installer in the country, with a door-to-door army that put panels on tens of thousands of Utah homes. Sunrun acquired Vivint Solar in October 2020 for $3.2 billion, and every one of those Utah Vivint leases is now a Sunrun lease in practice.
That's the largest under-served retrofit segment in Utah, and it's not even close.
Here's the kicker: Sunrun won't sell you a battery in Utah. Their official add-battery page lists eight states — CA, FL, MD, NV, NY, TX, HI, IL. Utah isn't on the list. So if you're a Sunrun customer (or a former Vivint customer now serviced by Sunrun) in Utah and you want a battery, your options are:
- Pay them a buyout (usually a bad deal — more on that below)
- Live without a battery
- Call a third-party installer
That's it. The leasing company that owns your panels straight-up doesn't offer the product you want in your state. That's not a marketing line we made up. That's sunrun.com.
The legal piece
Every Third-Party Owned (TPO) solar contract — Sunrun, Sunnova, SunPower, Tesla Solar lease — restricts modifications to their equipment. They have a UCC-1 fixture filing at the county recorder against the panels and inverter they own. That's why customers worry about adding anything to the system.
None of that touches a new battery you buy and install at your main service panel downstream of where their lease ends. Solar.com's legal write-up on TPO retrofits says it plainly: "It is possible to own the battery separately from the solar array, although there needs to be a clear line of what equipment is yours versus what equipment is owned by a third-party."
The clean-install path:
- AC-couple the new battery at the main service panel
- Don't touch anything they own (panels, microinverters, string inverter, combiner)
- Document that the new battery is homeowner-owned and on a separate metering arrangement
That's the entire trick.
The bankruptcy mess (read this before signing anything new)
If you currently have leased solar from Sunnova, SunPower, or Vivint Solar (now Sunrun), it helps to know what's actually happening with those companies in 2026.
Sunnova: filed Chapter 11 June 9, 2025
Sunnova filed bankruptcy after the Trump administration pulled their $3B DOE loan guarantee. Sold to Solaris Assets/GoodFinch for ~$118 million. Their lease portfolio is now serviced by SunStrong, which is a servicer, not an installer.
The reality on the ground has been ugly. Connecticut AG opened an investigation in February 2026 covering 65 formal complaints about SunStrong: failing to honor warranties, not responding to consumer complaints, charging a $10 monthly fee for production data. WCVB in Massachusetts ran a story in February 2026 about a homeowner whose system has been disconnected for nearly two years because SunStrong can't get a technician out to reconnect it. Reddit's r/solar has a thread titled "Stay away from Sunnova" with the same patterns described over and over.
If you're a Sunnova lease customer in Utah, you're not getting a battery from anyone except a third-party installer. SunStrong doesn't sell them.
SunPower: filed Chapter 11 August 5, 2024
This one is messier. Complete Solaria bought a bunch of SunPower's assets in September 2024 and then rebranded as "SunPower" in April 2025, grabbing back the SPWR ticker. Today's "SunPower" is a different company than the one that filed bankruptcy.
The legacy SunPower's lease/PPA portfolio is serviced by SunStrong + Launch Servicing — the same SunStrong that's failing Sunnova customers. The mySunPower monitoring app shut down September 20, 2024.
The worst part: SunVault batteries. SunVault used a Schneider Electric inverter that SunPower modified proprietarily. Schneider refuses warranty coverage on the modified units. So a failed SunVault is essentially a brick — no warranty path, no parts pipeline.
SunPower lease contracts have a clause that reads: "You cannot seek third-party repairs for a leased or PPA system, as it could potentially lead to a breach of contract." That means we can't touch their stuff. But we can install our battery at our equipment downstream.
The new "SunPower" hasn't resumed a Powerwall-add-on program for legacy lease customers as of May 2026.
Vivint Solar (now Sunrun)
Riverside County DA, plus Alameda, Fresno, San Diego, and San Francisco DAs, settled with Vivint Solar remnants in February 2026 for $4.3 million in restitution over deceptive practices. The Dekker v. Vivint Solar class action in the Northern District of California is still active — Judge Alsup granted class certification for California consumers ensnared by Vivint PPAs, attacking their termination and transfer fee provisions as unlawful liquidated damages.
Utah's own 2019 class action against Vivint already settled, and the Utah customer base is now under Sunrun servicing. Same rules apply: Sunrun won't sell you a battery in Utah. Third-party install is the path.
Tesla Solar lease
Tesla relaunched solar+Powerwall leasing in October 2025: 25-year solar+PW lease, 12-year PW-only lease, 3% annual escalator, buyout option after year 5 at "fair market value." For existing Tesla solar lease customers wanting to add a Powerwall, forum reports on Tesla Motors Club consistently show Tesla refuses to add Powerwall to a system they don't fully control. Multiple users have been told they'd need to own the solar outright first — meaning a buyout.
The buyout math
Real numbers reported by real homeowners on solarpaneltalk.com and r/solar:
- Sunrun year 5-6 buyout, 6.89 kW system: $26,271 + tax = $28,438
- Sunrun mid-lease buyout (2024 home sale): $40,000 with seller offering a $10K credit at closing
Sunrun publicly says buyouts at years 5, 10, 15, 20 are "fair market value." In practice, the math almost never beats just continuing the lease and AC-coupling a third-party battery.
For SunPower and Sunnova legacy customers serviced by SunStrong, there's basically no clean buyout pathway as of May 2026 — SunStrong isn't a buyer, they're a servicer. Reddit and forum reports describe months of silence when customers try to get buyout quotes.
Bottom line on buyouts: usually not worth it. The cleanest move is leave the lease alone, AC-couple a new battery at your main service panel, let the lease run out on its original schedule. Buy out only if you're selling the home and the buyer won't take the lease, or if the leasing company is so difficult you need to be completely free of them.
Wattsmart on leased-solar homes
The published RMP Wattsmart program page (May 2026) doesn't explicitly require the underlying solar to be owned. Eligibility focuses on the battery: must be customer-owned, RMP-dispatchable, on Schedule 135/136/137 for rate, paired with solar generation. The battery is what's enrolled and rebated.
Reading the terms literally, a homeowner who owns a new battery installed alongside leased solar should be eligible for Wattsmart. We're confirming this on our next leased-solar install — we'll update this post once we have a verified outcome from RMP. Until then, treat Wattsmart-on-leased-solar as "expected to work but not yet field-verified through BYOP."
Of the brands we install, only Tesla Powerwall 3 is currently on the published RMP eligible list. Sigenergy, EG4, and Ruixu are not. Full Wattsmart breakdown here.
What we say to a Sunrun customer who thinks they're stuck
You're not stuck.
Sunrun owns the panels. They don't own your house. They don't own your main service panel. They don't own a battery you buy. Their lease covers solar generation, not backup power — and they don't even offer batteries to Utah customers.
So we install a Tesla Powerwall 3 at your main service panel, completely separate from your leased solar, AC-coupled. Your lease keeps running exactly the way it is. The battery is yours. When the grid goes down, the Powerwall runs your whole house. When the grid is up, your leased solar feeds the panel as normal and the Powerwall sits there ready.
Net cost: $11,495 after the $2,500 stacked rebate (Wattsmart + Tesla Next Million), assuming RMP approves Wattsmart on the leased-solar configuration. The leasing company doesn't sign anything, doesn't approve anything, doesn't get a vote.
What we don't promise
- We haven't read your specific lease contract. You should.
- If something fails on their side after our install, that's still their problem and still on them.
- We don't repair or warranty their equipment — we warranty what we install.
- If you have a future dispute with the leasing company about their system, we're not party to it.
About contract clauses
We went looking for documented cases of a leasing company successfully blocking a third-party AC-coupled battery install at the main service panel using a contract clause. We couldn't find one.
There are anecdotal Reddit reports of leasing companies being uncooperative — slow to send equipment specs, refusing to confirm interconnection details, generally being a pain. That's a logistics annoyance, not a legal barrier.
The standard contract clauses customers worry about — "modifications to the system," "right of first refusal," "no third-party repairs" — all target equipment they own. They don't extend to homeowner-owned equipment downstream of where their lease ends.
The 5-step path for any Utah leased-solar customer
- Don't buy out the lease. Almost never worth it.
- Don't call your leasing company first. They'll either say they can't sell you a battery in Utah (Sunrun), or they'll quote a buyout (Tesla), or they won't respond (SunStrong on legacy SunPower/Sunnova).
- Get a site visit from a third-party installer. We'll look at your main service panel, your existing solar's inverter type, and tell you exactly what fits.
- AC-couple a Tesla Powerwall 3 at your main service panel. Your solar lease is untouched. The battery is yours.
- File Wattsmart on the new battery (we do this for you). $2,500 rebate stack on the Powerwall.
That's the whole playbook.
Frequently Asked Questions
Can I add a battery to my Sunrun leased solar in Utah?
Yes. Sunrun owns the panels and inverter, but they don't own your main service panel or a battery you buy. We AC-couple a third-party battery (typically Tesla Powerwall 3) at your main service panel, completely separate from the leased equipment. Your Sunrun lease keeps running unchanged. The battery is yours. Sunrun doesn't sign off — the install is downstream of where their lease ends.
Does Sunrun sell batteries in Utah?
No. As of May 2026, Sunrun's official add-battery page lists eight states: CA, FL, MD, NV, NY, TX, HI, IL. Utah is not on the list. Sunrun leased-solar customers in Utah who want a battery either pay an inflated buyout to exit the lease, live without a battery, or call a third-party installer.
Should I buy out my Sunrun or Vivint lease to add a battery?
Almost never. Year 5-6 Sunrun buyouts on small systems have been quoted at $26,000–$40,000 — far more than the lease itself costs to keep running. Buyout makes sense only if you're selling the home and the buyer won't take the lease, or if the leasing company is uncooperative enough that you need to be completely free of them. For battery retrofit purposes, leave the lease alone and AC-couple a new battery downstream.
Will my Sunrun lease company block a third-party battery install?
No documented case of a lease company successfully blocking a third-party AC-coupled battery install at the main service panel. The standard contract clauses customers worry about (no modifications, right of first refusal, no third-party repairs) all target equipment the lease company owns — they don't extend to homeowner-owned equipment downstream of where their lease ends.
About the author
Batsaikhan(Bat) Ariun-Erdene is the owner of BYOP Electric, a licensed Utah Master Electrician (E200), and holds a B.S. in Electrical Engineering. He has personally designed and installed 35+ solar and battery projects across Utah's Wasatch Front. BYOP Electric is a Tesla Powerwall Certified Installer. More about Bat and BYOP Electric.