A solar system is your own personal power plant, silently delivering clean electricity into your home. Every kilowatt-hour (kWh) your residential solar system produces is energy you are not purchasing from your utility. Over time—as utility rates continue to increase—the rate at which you save continues to increase.
Why is now the best time?
Net metering
Export excess electricity to your utility as kWh credited to your account. Only pay for your net electricity usage.
PSE’s current net metering program is open to new projects through December 31, 2025.
Rising electric rates
Puget Sound Energy increased electric rates by 12% in 2025 and has been approved for an additional 6.3% increase in 2026.
Federal Tax Credit*
Homeowners are eligible for a Residential Clean Energy Credit on their solar system.
Under current policy, the credit is valued at 30% of the total system cost for systems installed through 2032.
Sales tax exemption
Washington State has exempted solar installations from sales tax through 2029. This applies to the total installation cost, including equipment and labor.
So...how does residential solar work?
Solar modules are installed on the roof. When exposed to the sun, the modules generate direct current (DC) electricity.
An inverter converts DC electricity into alternating current (AC), which is usable in the home.
AC electricity runs directly into your electric panel and powers any electrical loads currently being used.
Excess electricity passes through a utility net meter, which tracks kWh imported and exported.
Electricity returned to the grid is credited to your account. Utilities with net metering will bank these kWh until you need them.
Automatically use your banked credits when you pull from the grid. The credit bank resets annually on March 31st.
How we size your system
Our starting point is typically to design a system that covers 100% of the energy you use in your home. However, as the homeowner you have complete control over the scope of your solar system. We are happy to work with your goals and your budget to design the right solar system for you!
1. Project Scope
Current Usage
We’ll tally up your current electricity needs to determine how many kWh you need to produce to eliminate your electric bill.
Future Usage
Planning on buying an electric vehicle or replacing an old gas furnace with a heat pump? We’ll account for that.
2. Site Specifics
Solar Resource
How much sun hits your roof depends on your location, roof pitch, surrounding trees, and more. We’ll calculate this!
Roof Conditions
Whether it’s a cozy craftsman or a simple shop, your roof’s size and layout will determine how large of a system we can fit.
3. Your Goals
Budget
Whether you pay out of pocket or finance with a loan, we’ll help size your system to match your budget and monthly goals.
Long-Term Plans
From boosting home value before a sale to lowering bills before retirement, we’ll design a system that aligns with your future.
The first step to design your system involves sizing it appropriately for your electricity needs. These steps will walk you through downloading your historical electricity usage and a copy of your most recent bill, so we can get started on your system design.

Residential solar showcase
Get started on your project!
*Please note: Western Solar is not certified to give tax advice and all specific tax-related questions should be discussed with your CPA.
FAQs
Utility customers who generate their own electricity and are connected to the utility’s distribution grid offset electricity that would otherwise be purchased from the utility. There may be times when the customer’s system generates more electricity than the home needs during the day, week or month. In these cases, a credit is issued to the customer’s account for the excess power, which can be used during the following month(s) until the annual true-up. In other words, the customer will only pay for the energy that the utility provides.
Due to weight limitations of the roof on a standard mobile home, roof installations are often not possible. Systems can be installed on manufactured homes if they were designed for a 30 lb/sqft snow load. Please refer to your manufactured home specifications, listed on the metal placard on the side of the home, to verify the snow load specifications.