System Size

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1. ENERGY EFFICIENCY FIRST
An energy efficient home will save you money, even without a rooftop solar system.

2. SYSTEM SIZE
Customers use energy differently. Make sure your system is sized appropriately.

3. BILLING
What can you expect to pay monthly?

4. SELLING YOUR HOME
Who is the system owner?

5. GET ADVICE
Seek professionals!


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It’s important to know how much energy, in terms of kilowatt hours, you consume annually. This will help you and your contractor determine the size of system you would like to install. You can request your consumption history by calling IID at 1-800-303-7756 or by email customerservice@iid.com.

Before you sign any contract, know what percentage of your annual energy consumption you can expect your system to offset. You don’t want any surprises with your monthly electric bill. Know what to expect.

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