If you drive around the metro area you'll see a range of solar PV system sizes. Some roofs are filled with panels. Some just have a few. How do you know how many panels you need?
It's likely that you won't. That's because there are many factors that our software includes that you can't. For instance, our software includes seasonal weather averages. The angle of your panels (typically your roof pitch). Even the rate of degradation for your specific equipment.
The key piece of information comes from you. When we have the last 12 months of electrical usage (it's best in kilowatt-hours, not dollars) we can model designs with different types of equipment and determine the optimal size for you.
However, if you find that system is more than you want to pay we can initially design a smaller system and expand it in the future!
What about a larger system so you can sell the power to the electrical company? In some states that might make sense. However, in Colorado there's a state law that limits the system size to generating 120% of the last 12 months of usage. Even if you could go larger, they buy back the power at a very low price, around $.04/kwh. That's less than 1/3 of the summer rate and 1/2 the winter rate.
If you're curious about your home, email Jackie and provide the 12 months usage along with your address. If you are building new, reach out before you build. There are design considerations that will make your home better for solar. Not to mention, if you are allowed to be off-grid you will save much more money than if you had the electric company run electricity to your new home. But that will be covered in a later blog post.
What else do you want to know? Ask in the comments.
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