Questions? Give us a call at (800) 383-4910
For Partners

A commercial solar loan platform built for you

We provide flexible financing solutions for businesses of all sizes, allowing you to offer your customers solar loans with borrower-friendly terms and an efficient application process

5 to 20 yrs


$50k to $5m

Scalable sizes



All Digital

Efficient process

Sunstone’s loan products enable solar developers to access more of the market and grow their commercial business​

Flexible, easy to understand and specifically designed to finance your customers’ commercial solar projects

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Do you have a solar project with unique financing needs?

We have relationships with a variety of financial institutions and would love to see how we can help with solar projects that include new roofs, energy storage, EV charging, and PPA debt financing

Terms from

5 to 20 yrs

Enabling you to provide the right loan product for your market or specific sales situation​

Minimum loan size


Underwriting criteria that stays the same no matter project size; there is no project too small or large for Sunstone Credit​


Lien Light

No real property liens- the only loan collateral is the solar system itself. We use personal guarantees on a limited basis.



Our end-to-end process is fully online, allowing you to have full control of your customer relationships and eliminating the hassle of paperwork

Our Technology

Commercial solar financing,
helping you sell more solar!

We make financing a seamless part of your sales process so you can generate more opportunities and close more deals. Using our web portal, you select the loan product, initiate the financing process and monitor your customer's progress


Choose the product and initiate the loan

As a developer partner on our platform, you choose the option you want to pitch and initiate the financing process, sending the application directly to your customer, all in real time


A simple process made simpler by technology

Our loan application process requires minimal documentation. Sensitive documents are stored in our encrypted database to keep them secure


Manage the financing and keep the sale moving

Sunstone provides status updates to you as the borrower progresses through the application and our underwriting team reviews it. This process transparency allows you to keep deals moving forward


Processes that move at your speed

Get an approval decision and execution-ready loan documents quickly and efficiently with our all-digital process

Other Things We Finance

The solar industry has always been about more than panels

Increase your revenue per project and close more deals by using our loans to finance additional clean energy products for your customers. All of the following can be included in our loans along with solar:
- Energy Storage
- New Roof
- Energy Efficiency Measures
- EV Charging Stations
- and more...

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Flexible Financing

We provide commercial solar loans that will work for more of your customers, with flexible products you select and a simple process you control

Borrower-Friendly Terms

Sunstone’s loan products have competitive rates, long durations, and are structured so you can optimize cash flow and ROI with solar

Easy to Understand Loan Products

Customer ownership is the most efficient, familiar and affordable way to deploy solar, providing better value to your customers

Seamless Technology

Our end-to-end process is fully online, allowing full control of your customer relationships and eliminating the hassle of paperwork

Why Sunstone Credit?

Solar financing for businesses, the easy and affordable way

With Sunstone, you have a commercial solar financing partner that can help broaden your addressable market and simplify your sale

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Accessible solar financing for diverse businesses

Our loan products allow businesses of all sizes and in a variety of sectors to save money and reduce their carbon footprint by going solar

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Spread the Word!


If you know other developers or installers that would benefit from access to Sunstone’s platform, reach out and learn about our referral program


If you know a business that needs solar financing, get in touch to learn about our referral program

Join the Sunstone Network

Sunstone is partnering with best-in-class solar installers, developers and EPCs to grow commercial solar. If you need flexible commercial solar financing options for your customers, contact us at or click below to complete our partner application

Become a partner now
Want to learn more? Give us a call at (800) 383-4910