Tools
Eight things that do the work for you. None of them need an email address, and none of them pass your details to anyone.
Before you decide
What would a panel on your balcony actually save?
Seven questions, about a minute, and an honest number at the end — including when the honest answer is that it isn't worth it for your place.
Is it worth it for someone like me?
Fourteen common situations and a straight verdict for each — north-facing renters, home workers, café owners, people who already have rooftop solar.
Which way does your balcony face?
Thirty seconds with your phone compass, and what each direction is worth. South is best, west is close, north usually isn't worth buying.
Which utility are you on?
Your utility decides what a kilowatt-hour is worth to you, and rates differ by a third across California. Find yours and what it means.
Before you buy
Is this kit allowed in California?
Check whether a plug-in solar kit meets California's SB 868 requirements: 1,200W cap, plug-in PV certification, anti-islanding, standard outlet.
Two-minute outlet check
Six questions about the outlet you'd use. Tells you whether you're fine, should ask an electrician, or shouldn't do it. No wiring instructions.
The buyer's checklist
What to check about your place, about the kit, and what to do the day it arrives. Printable, one page.