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Here are a few answers to our most commonly asked questions. If you have other questions, you can reach us at


What is the largest solar panel you recommend using with Perch?

Voltaic Systems 17W solar panel or any panel weighing less than 4 pounds.


Does Perch only fit within double hung windows?

Yes. Perch Horizontal is only designed to work with double hung windows. Other versions will come out soon. Sign up on our mailing list to keep current!


If none of my windows get direct sunlight, can I still use Perch?

We recommend that you use windows that have some exposure to the sun during the day