Solar is for Everyone!
Project: Home on the Range

Why Go Solar with OnSite Energy?

OnSite Energy, Inc. is a locally owned solar power contractor based out of Bozeman, Montana, specializing in solar electric (photovoltaic) project development, design, and installation. With a strong commitment to the advancement of solar power in Montana, combined with extensive industry knowledge and expertise, our goal is to empower our community members through the use of clean renewable energy…and truly believe that solar is for everyone.
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Xanterra Parks & Resorts recently had the pleasure of working with OnSite Energy on a solar install on our newly constructed Paintbrush employee residence at Old Faithful. This project was certified as Yellowstone’s first LEED Platinum building, and the addition of a renewable energy component was integral in helping us to achieve this prestigious accolade. The folks at OnSite Energy were knowledgeable, helpful, and easy to work with throughout the process and we look forward to future projects to help reduce our impact in the world’s first national park.
—Dylan HoffmanDirector of Sustainability--Yellowstone National Park Lodges


Site Analysis and Design

We pride ourselves on delivering high quality system designs that focus on efficiency and maximum energy production. At the heart of our design process is a thorough site analysis to determine the best solution for your overall energy goals. Solar electricity is by nature very technical, but your true investment is in the energy that your system produces over its lifespan, not just the technology. By utilizing the latest site analysis tools for measuring shading impacts and environmental conditions, we ensure a high level of accuracy in our energy production estimates, giving you an unsurpassed level of confidence in your solar investment.

Project Development

We are so much more than just a solar installation company. Over the last decade of developing solar projects in Montana, we have built an extensive network of industry professionals and advocates, and in utilizing those partnerships we can more effectively develop and implement solar projects of any type and scope, from off-grid residential to large scale commercial applications. What truly sets us apart is our vast array of project development services, which include: Grand Funding Procurement, Creative Ownership Structures, Tax Equity Financing, and Advanced Design and Estimating Resources.


We offer full-service turn-key installation services. Our staff is expertly trained in installation and safety practices and are certified through the North American Board of Energy Practitioners (NABCEP) as PV Installation Professionals along with NorthWestern Energy’s Qualified Installer Program.

Operations & Maintenance

By utilizing state-of-the-art PV analyzing equipment, our technical staff offers comprehensive operations and maintenance services. Detailed commissioning reports, long-term maintenance contracts and system inspection services from OnSite Energy ensure that your solar electric system will operate at full potential the entirety of its life.

Training & Education

Educating the public about the benefits and technical aspects of solar electric systems is a primary focus at OnSite Energy. We offer a variety of solar training and educational services, including the construction of mobile solar labs, PV training manuals, and in person workshops. Our training and education clients include but are not limited to, NorthWestern Energy, University of Montana, and the Montana Joint Electrical Training Center (MEJATC).

Our Latest Projects


The owners of OnSite Energy, Inc., Orion Thornton and Conor Darby, have been dedicated to solar power in Montana for over a decade. They have designed and managed the installation of over 400 solar projects throughout the state while playing a significant role in the advancement of the industry through technical expertise and advocacy. The future is bright for solar power in Montana, and OnSite Energy will continue to be a leader in design, project development and system integration.
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© 2016 OnSite Energy, Inc.