Solar owners ask a particular kind of frustrated question: the panels are on the roof, the sun is out, the house is dark. These are the questions they actually post — why the system shuts off, what hardware changes that, and the honest winter math on recharging from panels — each with the short answer here and the full version on its own page. This shelf hangs off our Power hub.
The blackout question
Your grid-tied solar shuts off in a blackout — here’s how to use it
Your inverter is doing its job: anti-islanding rules shut it down so it can’t energise lines a repair crew believes are dead. Using the roof in an outage takes one of four additions — sunlight-backup hardware that runs some loads while the sun shines, a home battery, a meter-socket inlet with a portable generator, or a separate station-and-panels setup that ignores the roof entirely. They differ most at 9 p.m., not at noon.
The charging questions
How long to recharge a power station on solar in winter, or on cloudy days?
Plan on winter delivering roughly a third of the summer harvest in northern states: a 400-watt panel that makes 1,600+ watt-hours on a good June day may make 500–800 in December, before clouds take their share. A station that refills in an afternoon in July is a two-day project in January — size the outage plan for the season you’re actually in.
Covered in: How many solar panels does it take to run a fridge?
How many solar panels does it take to run a fridge?
About 400 watts in average sun — 300 in strong sun, 600–800 in winter — always with a battery station in between, because the fridge runs at night and the panels don’t. That page is where our whole solar method (rate panels at about three quarters of nameplate, in decent sun) is worked out in full.
Covered in: How many solar panels does it take to run a fridge?
Winter harvest: Plan on roughly a third of the summer harvest in northern states.
A 400 W panel: 1,600+ watt-hours on a good June day; 500–800 in December, before clouds take their share.
Panels for a fridge: About 400 watts in average sun — 300 in strong sun, 600–800 in winter — always with a battery station in between.
How we answer
Ordinary Prepper is a research desk, not a test lab: we do not claim hands-on testing. Solar figures use the conservative harvest assumptions stated above; equipment behaviour (anti-islanding, sunlight backup) follows the manufacturers’ published specifications and the UL 1741 standard behind them.