Invest in Solar. Power Your Future.

CapStone Solar is a leading solar installer in the Pacific Northwest.

The CapStone Promise


We promise to make your switch to solar power straightforward, affordable, and beneficial.


With CapStone, you're not just choosing solar energy; you're choosing a partner dedicated to making a positive impact on your energy bills and the planet.


We commit to guiding you through every step, ensuring a seamless transition to reliable and sustainable energy for your home.
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Learn about CapStone Solar's team, values, and mission.
About us

What We Do

Choose CapStone Solar for your next solar project.
Our services

Our Portfolio

See some recent commercial and residential projects.
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Our Services

CapStone Solar is an integrated solar and general contractor, providing full solar services for homes, small businesses, and large commercial deployments.

Experience You Can Trust

Unrivaled Expertise and Proven Performance in Solar Solutions

Complex Situations

CapStone Solar excels in creating tailored solar energy systems that address complex energy needs, ensuring optimal efficiency and performance.

High Quality

We adhere to the highest quality standards, offering durable and reliable solar products that guarantee long-term energy savings.

Leading experts

Our team comprises industry-leading experts who are at the forefront of solar technology and innovation, ensuring you receive the best solutions available.

Local Expertise

With deep knowledge of local regulations and environmental conditions, CapStone Solar knows the Washington and Oregon markets!

Impressive history

Boasting a track record of successful installations and satisfied customers, our extensive experience underscores our reliability and expertise in the solar industry.


CapStone Solar is fully certified, meeting rigorous industry standards and ensuring our practices and products are safe, efficient, and compliant with regulatory requirements.

How We Work

Our Approach is Simple and Clear



We start by reviewing a recent electricity bill to understand your energy consumption.  We’ll model a system based on your needs.



Once you sign your proposal, we’ll schedule a site visit and engineer a detailed design of your system using drone footage and specialized software.



Our team coordinates with your utility and local ordinances to get all of the permits and paperwork you need squared away.



We’ll coordinate with you to find the best time to install your system. An average residential system takes 1-3 days to install.

How can we help with your solar project?

(800) 583-3620