4 ms·

Curious how many kwh per day, roughly, you're seeing on that 410w solar?

• mikestew 4y ago
  I can't get you really good numbers without some work, but what I did do was look back when I knew it was not covered, and when we were actively using it regularly, and when the Seattle sun was at it's best: June and July. In other words, give the most charitable number possible. For reference, the panels sit flat on the roof and I do not adjust them during the day. With some quick-and-dirty visual estimates from the charts, I'm coming up with about .85kWh/day. Yeah, I know, but I looked at it twice. I went back and looked at some other time periods as a sanity check. And <1kWh/day is what we get. In the summer. Right now the RV is sitting in the drive with the panels uncovered, and the driveway is sloped and slightly angling the panels to that sad little January-in-Seattle sun. Yesterday the panels cranked out a massive 0.1kWh. That's right: enough to run a 100W light bulb for an hour. Despite all that, it's enough to run the microwave a couple of times a day (which is really the only large draw the RV has), watch some TV, run the lights at night. And if the panels can't keep up, that's what the giant-ass 300ah lithium house battery is for.
  • muxator 4y ago
    Sorry, what does RV stand for? Thanks
    • mikestew 4y ago
      “Recreational vehicle”. Large camper, caravan, motor home.
  • michaelmrose 4y ago
    Generally speaking that 100w light bulb was probably replaced with an LED 20 years ago and now consumes 10w and runs for 10 hours.
    • mikestew 4y ago
      Well, yeah, it's just a "Library of Congress" measurement that is probably long past its expiration date. The entire vehicle's interior lighting is LED; on the monster house battery it has, you could probably keep it well-lit for weeks.