Make sure to watch the light on your solar panel inverter regularly. Check it at least a couple of times a week, while sunlight is hitting your panels. The light should be green. If it is not, your panels might not be working correctly, and it is time to call in a technician.
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You should always have a lease transfer option if you lease the solar energy system versus purchasing it outright. If your home is sold, you will need to have this option handy. If you can transfer it to the new owners, you'll be fine.