Talk to us

Spotted an error in a calculator or guide? Have a skill you think we should cover? Building something off-grid and want to share what you've learned? We'd genuinely like to hear it.

The fastest way to reach us is by email at [email protected].

Before you write

• For technical questions about your own project, remember that we can't give engineering or electrical advice for your specific situation — please consult a licensed professional.
• For corrections, point us at the page and the source you're citing; we review every one.