Case Studies

Solterra first met with the Lees in the spring of 2016. The construction had only just begun and the Lees were interested in adding more sustainability features to their project. They were interested in adding renewable energy because they preferred renewable over the alternative choices and it made sense to take advantage of government incentives and tax benefits. When comparing Solterra’s solar + steel cost after tax incentives to their original budget, Solterra’s proposal was about 10% less. Furthermore, SolTerra’s proposal would be helping to offset their energy demand and would be a great marketing benefit.

The steel Porte Cochere structure that would welcome guests to the front entrance of the hotel had already been designed at the point of meeting with the Lees. However, SolTerra was able to work with the structural engineer to adjust the layout of the steel beams in order to best support the solar glass as well as to obscure most of the electrical components that would have detracted from the overall aesthetic. Solterra elected to use Lumos solar panels because they let about 10% of natural light through, and they do not have any exposed electrical components.

Solterra completed the installation in time for the hotel’s grand opening in May 2018. The Lees have received numerous compliments on the final look of the Porte Cochere, plus they will get to claim 30% of the total project cost as a tax credit in 2018 and depreciate the project on an accelerated 5 year schedule.

When Solterra first met with WorldKids School, the Seattle-based childcare agency was looking to reduce their monthly electricity bill, operate more sustainably, and set a positive example for the children they serve.

Solterra utilized a ballasted system to reduce the number of roof penetrations, but had to get creative with design due to the roof’s many vents and other obstacles. Despite the unique challenges, Solterra was able to fast-track the project and complete the install before EOY, per the client’s request.

WorldKids took advantage of several solar financial incentives available to Washington businesses, including the Federal ITC (30% off the total cost of the system), MACRS (accelerated depreciation), and their local utility net metering program.

The WorldKids team is very happy with their system, which is performing optimally and producing an estimated 75,000 annual kWh per year. Their business is saving money and making a positive impact for the next generation—a win, win!

When Solterra first met with Jen in January 2017, she was in the midst of planning a number of home improvement projects. Her home was built in 1948 and was still using the original oil heat system.  In conjunction with switching from oil heat to an electric heat pump system, Jen wanted to power as much of her electricity demand from solar. She was also getting a new metal roof installed in the spring, so the timing just made sense!

Jen’s home was originally using 8,300 kWh per year but with the addition of the electric heat and AC, Solterra anticipated her electrical consumption to increase to around 12,500 kWh per year. When considering the design of the solar, Jen was clear: “If we can fit it on the roof, we should install it!”. With that in mind, Solterra designed and installed a 12.76KW install, which was estimated to generate 11,900 kWh in the first year.

Aesthetics were also of concern as her roof was very visible from the street. She elected to install all-black solar panels for the cleanest aesthetic possible. These panels complimented her new dark grey metal roof nicely and had all the neighbors envious.

After having the installation for a year, the system produced 12,900 kWh and Jen’s home consumed 12,500 kWh. She can officially brag about being a net zero energy home!

When Karen first became interested in solar energy, she was looking to offset her electricity consumption after adding AC to her home, and switching to an electric heat pump over the winter. She lives in a split level and face full West with plenty of Southern exposure. With the increased electric load [from the AC and heat pump] – she knew solar was the way to go.

After receiving a couple of bids similar in price, Karen went with Solterra because of the customer service.  She wanted a system that would help meet her energy production goals while being mostly hidden from the street.  She also added an EV charger for a future electric vehicle. 

“I added an EV charger and am trying out a Volt (so far so good!) and also bought an E-Bike (that is super fun!).  It was a big out-of-pocket winter, but when my AC goes on and my PSE bill stays low, there will be plenty of smiles at my house.” 

We used all-black panels, frames, and racking hardware for aesthetics.  Her initial budget goal for the project was smaller, but she elected to go with a bigger system for a larger offset of her electric bill after comparing the payoff for each design.

Karen learned about Solterra through social media and her neighborhood blog.  “My Solar Design Consultant, Isaac, gave a great presentation, but I also loved the simplicity of the process: from the education of what solar can do (in which Isaac was very patient), to the electric issues, to the installation and follow up, Solterra made it EASY.  Solterra made sure everything would go as planned, and it did. I love my new solar, and tell everyone about it.  Of course, the question is, ‘What are the payoffs in investment?’.  Solar is a long-term investment that I know will eventually pay off monetarily, but for sure will pay off in doing my part to reduce my emissions. In my opinion, if you love where you live, and are going to stay for a while, solar is a no-brainer.” 

Marine and Brad wanted to maximize production with the design of their array.  “We have two kids, two grandparents, and two adults in the house…so we consume a lot of energy!”  For this reason, they decided to place panels on both their house and garage, for a total system production capacity of 15.6 kW. They noted that their Solar Design Consultant, Kevin, was extremely responsive, friendly, and willing to work with them on their goals. “We also felt bad about owning a hot tub that uses so much energy,” Marine said, “but now the hot tub is powered by solar!”  The pair was used to monthly utility bills of around $80, but now, the payments have “disappeared!” 

Marine and Brad see electrifying their entire household with solar and transitioning to electric transportation as a game-changer. Already, they are more aware of their consumption, and it teaches them to not use electricity when it’s not needed. They also love the learning opportunity for their very young kids about energy consumption and what should be the new normal.  “We are already spreading the word about solar whenever we can.”  

KUUF picked Solterra because the customer service stood out. Solterra was the first company to get back to them with an estimate, patiently explained technical terms, and were supportive throughout the approval process with KUUF’s Board of Trustees and various committees.

“Once the contract was signed, Solterra installed the system in a timely fashion, despite some complicated electrical challenges,” said Marty Bishop of KUUF.

KUUF’s solar system features 110 panels that offset 46% of the organization’s energy usage. In a year, the system generates an estimated 35,440 kWh, and will save KUUF approximately $220,000 over its 25-year warranty period.

“We are very happy with the solar panels. They reduce the amount Easterseals has to pay for electricity and they make us feel like we are doing a small part to reduce our use of fossil fuels. We highly recommend using Solterra for your solar installation,” said Marty Bishop of KUUF.

Canterbury Manor’s solar project was entirely funded by two grants from PSE and the WSU Community Solar Expansion Program. Planning began to install an impressive 146.28 kW system, but the permitting process posed challenges. The project was able to progress as planned thanks to the persistence, decisive action, and creative problem solving of Solterra CEO Aimee Carpenter.

In September 2025, Canterbury Manor staff and residents gathered for a ribbon cutting ceremony to celebrate the non-profit’s transition to solar. They were joined by the Solterra team, the mayor of Bremerton, and representatives from PSE and the Episcopal Diocese of Olympia.

The Canterbury Manor install is the new flagship solar array for the Diocese, which represents more than 120 properties in western Washington. It is already inspiring others—including many local congregations—to explore solar for their buildings.

The system offsets 18% of the organization’s 861,157 kWh annual energy usage. Projected energy cost savings are estimated to be $1,420,483 over the 25+ year lifetime of the system.

“This was a perfect example of persistence, partnership, and planning that all came together to create an outcome that will have an impact for generations,” said Kendall Haynes, non-profit solar coordinator for Solterra Solar.