Solar & EVs: Power Your Home & Car in WA & OR

Learn how to size a solar system for your home and EV in Oregon or Washington. Eliminate fuel costs and embrace energy independence with Sunbridge Solar.

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    Solar & EVs: A Perfect Match

    Imagine cruising past the gas stations lining the Historic Columbia River Highway, not with a smug sense of superiority, but with the quiet confidence that your fuel is being generated on your own roof. Picture your electric vehicle (EV) charging in your garage, powered not by a fluctuating utility grid, but by the same reliable Pacific Northwest sun that casts shadows from Mount Rainier to Mount Hood. 

    This isn’t a futuristic dream; it’s the reality for a growing number of homeowners in Oregon and Washington. The pairing of solar panels and electric vehicles is more than a smart choice—it’s a perfect match, creating a powerful synergy that leads to complete energy independence and the elimination of fuel costs.

    For over 15 years, Sunbridge Solar has been the trusted expert in solar panel installations across Oregon and Washington. We’ve seen firsthand how this dynamic duo transforms household budgets and environmental footprints. As a top-rated solar company, independently verified by the Energy Trust of Oregon, we specialize in creating tailored residential and commercial solar solutions. We’re here to guide you through the process of harnessing the sun to power not just your home, but your ride as well.

    The Power Couple

    Why Solar and EVs Belong Together

    The beauty of pairing an EV with a home solar system lies in its elegant efficiency. Your home and your vehicle are typically the two largest energy consumers in your life. By powering both with solar, you take control of your energy production and consumption, effectively creating your own personal, clean energy power station.

    • Eliminate Your Fuel Bill, Forever: This is the most significant and immediate financial benefit. The concept is simple: instead of paying volatile prices at the pump, you generate your transportation fuel at home for a fixed, one-time investment. Over the 25+ year lifespan of your solar panels, this translates to tens of thousands of dollars in savings.
    • Maximize Your Solar Investment: When you’re at work during the day, your solar panels are at their peak production. If your home’s energy needs are met, the excess energy can be used to charge your EV. This ensures that you are using every kilowatt-hour (kWh) of clean energy you generate, maximizing the return on your investment.
    • Achieve True Energy Independence: Utility rates are unpredictable and consistently rise over time. By generating your own power, you insulate yourself from these price hikes. When you add a battery backup solution to your solar system, you can store excess solar energy to power your home and charge your EV even during a power outage, giving you unparalleled peace of mind.
    • Dramatically Reduce Your Carbon Footprint: Driving an EV is a significant step towards a greener lifestyle. However, if you’re charging it with electricity generated from fossil fuels, you’re still contributing to carbon emissions. Powering your EV with solar energy makes your transportation 100% emission-free, a powerful statement of your commitment to environmental sustainability.
    ev charger

    Sizing Your System

    The Blueprint for Energy Freedom

    The key to successfully powering both your home and your EV is a correctly sized solar system. An undersized system won’t meet your needs, while an oversized one means you’ve over-invested. At Sunbridge Solar, our process is transparent and tailored to your specific energy profile. Here’s how we determine the perfect size for your solar installation:

    Step 1: Calculate Your Home’s Energy Consumption

    The first step is to understand your baseline energy usage. We’ll start by looking at your last 12 months of utility bills. This helps us determine your average monthly and daily kilowatt-hour (kWh) consumption. The average home in Oregon uses around 924 kWh per month, while in Washington, it’s about 969 kWh. However, this varies greatly depending on the size of your home, the efficiency of your appliances, and your family’s lifestyle.

    Step 2: Factor in Your Electric Vehicle’s Needs

    Next, we calculate the energy required to charge your EV. This depends on a few factors:

    • Your EV Model’s Efficiency: EVs are rated for efficiency in terms of kWh per 100 miles. For example, a Tesla Model 3 might use about 25 kWh to travel 100 miles. You can find this information for any EV model on the U.S. Department of Energy’s Fueleconomy.gov website.
    • Your Daily Commute and Driving Habits: How many miles do you drive on an average day? Let’s say your daily commute from your home in the shadow of Portland’s St. Johns Bridge to your office and back is 40 miles.
    • The Calculation: We use a simple formula to determine your EV’s daily energy needs:
      (Annual Miles Driven / 365 Days) * (kWh per Mile) = Daily kWh for EV
      Let’s say you drive 15,000 miles per year in an EV that gets 4 miles per kWh (or 0.25 kWh per mile):
      (15,000 miles / 365 days) * 0.25 kWh/mile = 10.27 kWh per day

    Step 3: Combine Your Home and EV Energy Needs

    Now, we simply add your home’s average daily energy use to your EV’s daily charging needs to get your total daily energy target.

    • Average Home Daily Use: 30 kWh (based on a 900 kWh/month average)
    • EV Daily Use: 10.27 kWh
    • Total Daily Energy Need: 40.27 kWh

    This is the amount of energy your solar panel system needs to generate each day, on average, to cover 100% of your electricity and fuel needs.

    salem solar panels on a home

    Step 4: Designing the Right System

    Once we have your total energy target, our expert solar designers get to work. We consider several factors unique to your property:

    • Peak Sun Hours: The Pacific Northwest gets fewer peak sun hours than sunnier regions like Arizona, but our advanced, high-efficiency panels are designed to perform exceptionally well in our climate. We use precise data to calculate the average daily sunlight your specific roof receives throughout the year.
    • Roof Orientation and Pitch: A south-facing roof is ideal, but east and west-facing roofs are also highly effective for solar production. We’ll design a layout that maximizes your roof’s potential.
    • System Efficiency: We factor in a small percentage of energy loss that naturally occurs as the electricity flows from the panels to your home and EV charger. We use only the latest, most efficient solar equipment to minimize these losses.

    By combining all this data, we can determine the exact number of solar panels and the required system size in kilowatts (kW) to meet your energy goals. Our commitment to accuracy and efficiency allows us to keep our prices competitive and offer fast, 2-3 day installations.

    Financial Incentives

    Making Solar + EV Even Smarter

    Pairing solar with your EV is not just an environmental decision; it’s a savvy financial one, made even more attractive by a host of available incentives. Sunbridge Solar guides you through every available rebate and credit to maximize your savings.

    • The Federal Solar Tax Credit: This is the most significant incentive. Currently, it allows you to deduct 30% of the total cost of your solar installation from your federal taxes. This credit applies to both the solar panels and any integrated battery storage system.
    • State and Utility Rebates: Oregon and Washington offer fantastic programs. For instance, the Energy Trust of Oregon provides cash incentives for new solar installations for customers of Portland General Electric and Pacific Power. Similarly, many Washington utilities offer rebates for installing solar.
    • Net Metering: This policy allows you to send any excess electricity your solar panels generate back to the grid in exchange for credits on your utility bill. When your panels aren’t producing (like at night), you can draw from these credits instead of paying for electricity.

    With our superior 10-year craftsmanship warranty and 25-year product warranties, you can be confident that your investment is secure for decades to come.

    Frequently Asked Questions

    How many solar panels to charge an EV in Oregon?

    The number of solar panels needed to charge an EV in Oregon depends on your vehicle’s efficiency and your driving habits. On average, you might need an additional 5 to 8 panels dedicated to your EV’s consumption, assuming you drive about 13,500 miles annually. During a free consultation, Sunbridge Solar can provide an exact calculation based on your specific EV model, daily commute, and home energy use, ensuring your system is perfectly sized for both your home and vehicle.

    Is a battery necessary for charging my EV with solar?

    While not strictly necessary, a battery backup solution like the Tesla Powerwall or Enphase IQ Battery is highly recommended. It allows you to store the excess solar energy your panels produce during the day and use it to charge your EV overnight or during a power outage. This maximizes your use of clean energy, provides energy security, and further reduces your reliance on the utility grid, making it a key component for achieving true energy independence in Washington and Oregon.

    What’s the cost of a solar system for a home and EV?

    The cost of a solar panel system for a home and EV varies based on the total size required to meet your combined energy needs. The initial investment is offset by a 30% federal tax credit, state incentives, and the complete elimination of your gasoline costs. Sunbridge Solar is committed to affordability through our fast and efficient installation process. We provide a transparent, no-obligation quote that details all costs and your projected long-term savings.

    Can I power my home and two EVs with solar panels?

    Absolutely. Powering a home and two EVs is a common scenario we handle at Sunbridge Solar. The process is the same: we calculate your home’s energy use and add the charging needs for both vehicles to determine the total required system size. Whether you’re driving to the markets in downtown Portland or exploring the vistas near the Space Needle, we can design a robust solar and battery storage system to meet even the highest energy demands, ensuring your family’s sustainable lifestyle is fully supported.


    Take the Next Step Towards Energy Independence

    The synergy between solar power and electric vehicles offers a clear path to a future free from fuel costs and utility rate hikes. It’s a smart, sustainable, and financially sound investment in your home and your future. As Oregon and Washington’s expert in solar panel installations, Sunbridge Solar is ready to make this vision your reality. Our qualified team provides hassle-free, turnkey solutions with unmatched warranties and ongoing support.

    Don’t wait to start saving. The journey to powering your home and EV with the sun begins with a simple, no-obligation conversation.

    Fill out our free consultation form today!

    Or give our friendly solar experts a call at 360-313-7190.

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    Picture of Adam Walters

    Adam Walters

    Adam Walters is a writer and solar industry expert with over a decade of experience. He has written extensively on topics related to renewable energy, sustainability, and climate change, and is a passionate advocate for the transition to clean energy sources.

    Email Adam

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