Home / News / Considering Third-Party-Owned (TPO) Solar in Oregon? Read This Before Signing a Lease

In Central Oregon, power bills keep going up. Maybe you’re finally ready to look at solar, and an ad or door‑knocker has promised a rooftop solar system that will cost less per month than your power bill. They tell you a third‑party company will install panels on your roof at little to no upfront cost, and you’ll only be responsible for one monthly payment.

This offer — a discounted system, no large initial payment, and someone else handling maintenance and tax credits — may seem appealing. However, before signing a contract, we recommend learning how these programs actually work and what they will cost you over time.

What Exactly Is Third‑Party Owned (TPO) Solar?

In a TPO arrangement, a financing company or other third party buys, owns, and controls the solar energy system, and you make monthly payments for the use of that system or its electricity. (You don’t actually own the solar equipment on your roof.)

In one TPO offering our team reviewed, the finance company claims the commercial investment tax credit (48E) and provides the homeowner with a discounted system in exchange for owning it for a minimum of five years.

From a homeowner’s perspective, the discounted price and the promise of no upfront cost or a decreased utility bill often seems attractive. But in reality, you’re entering into a long‑term financial contract where the other party controls the tax benefits, what equipment is installed, and many other details spelled out in the fine print.

How Current TPO Offers Work

In Central Oregon, most of the residential TPO options becoming available work as follows:

• In order to claim the 48E tax credit and any adder bonuses, the finance company structures the deal as a commercial project then returns a portion of that value to the homeowner as a 20–40% discount off the cash price of the system.
• The company then applies a “discount” to equipment that is significantly more expensive than many homeowner‑owned systems, often limited to one brand. (As an example, TPO packages can run 35–45% higher than comparable alternatives.)
• The remaining cost of the system is financed at an interest rate ranging from roughly 7–25% (dependent on an applicant’s credit score), and for terms of up to 25 years (typically with no fees but with a lengthy payment schedule).
• The third party owns the system for at least five years to keep the tax credit, then either transfers ownership at a determined point (for example, automatically at year six) or leaves it leased for 20–25 years with a possible fair market value buyout later.

On paper, this can be framed as a win‑win due to a lower upfront cost, included maintenance, and a discounted system backed by federal incentives. However, when you compare this option with a fairly priced, high‑quality system that you own, the picture changes.

Where TPO Solar Offerings Fall Short

While TPO models offer immediate savings, there are some drawbacks. TPOs often restrict you from taking advantage of certain Oregon-specific incentives, which are mostly for systems that are purchased directly by a homeowner.

In a typical TPO pitch, your monthly payment is intended to stay just under the cost of your current utility bill (maybe a few dollars lower in year one), so you feel like you’re getting solar for less than you’d be paying the utility company.

However, there are a few problems with this logic in Oregon’s market:

1. The interest rate. A roughly loan amount and interest rate or lease cost stacked on top of a more expensive equipment package makes it extremely hard for your TPO payment to be much lower than your power bill, especially when your bill is closer to $150 than $350 per month.
2. The total amount paid over time. Spreading payments across 20–25 years means you can easily spend tens of thousands more over the life of the system than you would by buying it with cash or a simple‑interest solar loan.
3. The “discount” illusion. Because the underlying equipment cost is higher, a 20–40% discount can still leave you paying more than you would for a competitively priced, homeowner‑owned system.

We recommend looking at how the savings pencil out for your household. Oregon’s electric rates are rising, but they’re still relatively low compared to other states, which changes the math on lease payments versus bill savings. For many Central Oregon households, TPO payments aren’t far below a typical utility bill at today’s rates and interest levels. That means you may get the environmental benefit of solar, but without the substantial financial relief that many homeowners are seeking.

Additionally, since a third party will own the system for at least five years, we recommend understanding the buyout options or the process for transferring the lease if you sell your home.

It’s also important to note that it’s often large, out-of-state conglomerates that push TPO offerings via door-knockers — and once they’ve covered a specific region, they typically move on to the next market. This means that there isn’t always a dedicated, quick-to-respond service team in the area to address system issues when they arise. So it’s a good idea to know who is responsible for servicing the system, both while the third party owns the system and after ownership is transferred.

Direct Ownership vs. TPO SOLAR

Here is a high‑level comparison of direct ownership versus TPO offerings, based on factors we’ve found most homeowners care about:

For most Central Oregon homeowners, the approach that delivers the most control and the greatest lifetime savings is owning the system outright, whether it’s paid for via cash, home equity, or a solar loan.

What Are the Upsides to TPO Solar?

There are some cases where TPOs or leases can be helpful, and it’s reasonable for us to acknowledge them.

• Zero‑upfront‑cost access. If a homeowner is unable or doesn’t wish to take out a loan or use their savings to purchase a system, a lease is one way to get solar on the roof and avoid writing a big check.
• Included maintenance. In many TPO agreements, the third party is responsible for monitoring, repairs, and warranty work for the life of the contract, which some people find to be reassuring.
• Credit‑driven approvals. Some products can qualify homeowners who might not be able to access the best interest rate with traditional financing.
• Option to prepay a lease upfront. Some entities offer this option, which allows a homeowner to transfer tax benefits to themselves. (However, if you have the ability to do this, we recommend direct ownership due to lower overall cost savings.)

These benefits are a few reasons why TPO solar has become popular in markets where costs and utility bills run high. However, in states where utility bills are lower, and where certain TPO products are tied to high‑priced equipment and relatively steep interest rates, those benefits often don’t outweigh the long‑term cost and the loss of control most homeowners want over their own solar energy system.

Questions To Ask Before Signing a Contract

If “free solar” ads are appearing in your social media feed or someone knocks on your door promising solar panels at no cost to you, proceed with caution. We recommend asking these questions before you sign anything:

1. Who will own the system for the first 5–25 years, me or a finance company?
2. What will the interest rate or built‑in escalator be, and how long will payments last?
3. How soon will system issues be addressed if/when they arise? Is your company based locally (and able to provide service quickly)?
4. What are my obligations after ownership is transferred to me? At that point, who is responsible for servicing the system?
5. After 20–25 years, how much will I have paid in total compared to if I were to purchase a system today?
6. What happens if I sell my home? Can the buyer decline the lease? Who is responsible for paying to remove or relocate the system if needed?
7. Am I locked into a specific (and more expensive) equipment package to qualify for the discounted solar system?
8. What is the entity listed as the contractor designated for this project? (The contractor should be the same entity as that which is selling you the system.)

Any reputable installer should be able to run a side‑by‑side projection comparing a TPO offer with a directly owned solar energy system using the same roof, the same utility rate assumptions, and realistic inflation numbers. This comparison is often where the cost difference shows up for an average‑size home. (In some cases, this can be substantial — think $50,000–$100,000 over the life of the system.)

If you’re still considering TPO after weighing the pros and cons, it’s important to note that reputable providers will emphasize clear savings, transparent escalators, and fair end‑of‑term options — not “free solar” or vague promises. Remember the adage: if something sounds too good to be true, it probably is.

Why We Recommend Ownership First

Solar is a powerful way for Oregon homeowners to take control of rising power bills and build long‑term energy security. In some cases, TPOs may be a fair option for local families — but we recommend reading the fine print carefully due to the long‑term cost to homeowners and the limitations of these arrangements.

Direct ownership almost always delivers better long‑term value for Oregon homeowners than third‑party ownership (TPO) or leases, especially at today’s interest rates and given the rising cost of energy in our state.

In many cases, buying a well‑designed system (either with cash or a transparent, simple‑interest loan) will leave you with lower lifetime costs, more flexibility, and the confidence that the panels on your roof are truly yours. TPOs can occasionally make solar accessible for someone who truly cannot buy or finance a system, but it’s rarely the best path forward when a purchase or a straightforward loan is an option.

If you’re seeing TPO or “free solar” offers and want an honest comparison, E2 Solar is a Central-Oregon-based installer that can help model both options with your actual power usage and roof and show you the numbers, so you can decide what is in your household’s best interest. Drop us a line any time.