“Free energy from the sun and lower electric bills…Where do I sign up?” The benefits of installing rooftop solar panels may seem like a no-brainer but the reality is not every home (and homeowner’s situation) is always right for solar. There are several factors to consider before pulling the trigger on a rooftop solar system, like determining if your home will receive enough sun to achieve your goals, finding the right contractor, negotiating contracts and more. Investing in solar for your home is a major decision. If you’re considering rooftop solar, KEC can help. Here are eight questions to consider before installing rooftop solar panels.
- What are my goals? If your main goal is to use renewable energy and help the environment, consider signing up for our community solar program. You can help power renewable energy, without having to invest and maintain a home system. KEC’s Community Solar Project is located in Worley and members may purchase individual solar units for $342 each in 2025. Each unit is expected to generate about 234 kilowatt-hours (kWh) per year. Participating members receive bill credits for the energy created by their unit(s). Learn more on our Clean Energy page.
- Is my roof suitable for solar? Your roof should be in good condition before installing solar panels. If your roof is old and in poor shape, it may need to be replaced before panels can be mounted. Additionally, your roof should receive a lot of sun to make the most of a rooftop system. Consider how much sun (and shade) the roof receives and if any trees will need to be removed. Solar panels perform best when facing south, so keep this in mind as you think about where the panels will be mounted. The National Renewable Energy Laboratory offers a free online calculator that can help homeowners develop estimates of the performance of potential solar installations. Learn more with the PVWatts® Calculator. In some instances, a ground-mounted system may be a better alternative.
- How long will I own the home? If you’re considering rooftop solar, you’re likely planning to stay in the home for several years. But if you plan to sell the home at some point down the road, consider that not all potential buyers will want to maintain a rooftop solar system. If you enter a contract to lease the system, carefully review the terms and what those mean if you decide to sell the property.
- Lease or purchase? Purchasing a rooftop solar system outright is expensive, which is why many homeowners opt to lease their solar panels. However, available tax credits could help cover some of the costs for a new system. Regardless of how you decide to finance the solar system, make sure you get several quotes from qualified contractors. Speaking of contractors, there are several factors you’ll want to discuss with them up front.
- Can the contractor provide up-to-date documentation? It may seem obvious but be sure to request proof and documentation of the contractor’s licensing, permitting and other credentials. Comb through company reviews, check the contractor’s status with the Better Business Bureau, etc.—do your homework on the front end before signing a contract.
- Does the contract seem reasonable and fair? If you decide to hire a contractor to install rooftop solar, carefully read the fine print of the contract. Do the system performance calculations seem realistic? Does the project timeframe sound reasonable? Negotiate the contract terms to fit your goals and needs.
- How large should my system be and should I also consider batteries? Start by estimating your energy needs. To do this, review your monthly electricity use in kilowatt-hours (kWh), which you can find on your KEC bill or in SmartHub, our online account portal. For instance, using 1,000 kWh per month adds up to approximately 12,000 kWh annually. The ideal solar system size depends on several factors, including how much of your electric bill you’d like to offset, your location, panel efficiency and available roof space or orientation. You may want to consider adding batteries if you’d like to store energy for use during peak pricing, have backup power during outages, or reduce reliance on the grid.
- How do solar panels connect with KEC? Finally, but equally important, you must contact KEC if you decide to install solar panels. If you want your system connected to KEC’s electric grid, you’ll need to submit an application, pay a $250 non-refundable application fee, provide drawings and technical details of the array, sign an interconnection agreement and have an inspection completed by KEC prior to connection. When you contact us, we can walk you through these steps. For a general overview of how you can work with us on connecting your new rooftop solar system visit our Member-Owned Generation page. Members are also encouraged to contact us early in the process so we can review how KEC billing works once installation is complete. This includes the required monthly service availability charge and other fees, and how kWh credits work for excess energy your system may generate. Note: KEC is currently proposing a rate redesign that affects all rate schedules including the net metered rate schedules. Visit our Proposed Rate Redesign page to learn more.
There are many factors to consider before diving in and installing a solar system. As with any major home project, do plenty of research up front, and contact KEC at 208.765.1200 or kec@kec.com if you have questions or decide to move forward with installation.