Forum Discussion

Prylosis's avatar
Prylosis
Explorer
Dec 31, 2019

Solar system

Greetings all,
I apologize if this subject is covered elsewhere, but I couldn't find it if it is. :)

Will a 510 watt solar system, (such as Keystone), be enough for Boondocking lights, tv, fans, and coffee maker/microwave? I would not be trying to run A/C or fridge.

I know atmospheric conditions and an individuals usage are all variables, but was curious given "average" conditions.

Any input would be much appreciated, and it's nice to be here. :)

17 Replies

  • You still don’t get it. Solar panels REcharge batteries. They don’t “run” anything. Batteries power the RV including the inverter. Start with the survey. Don’t join those who skipped a step and say solar doesn’t work. It works.
  • Prylosis wrote:
    Thank you so much!

    I believe the system, (Keystone and KZ), come with 1300 watt inverters, but I was already thinking a 2000 watt would be a worthwhile upgrade.

    Knowing that 500 watts with moderation will work, is huge, again I thank you both! :)


    Make sure you go with a pure sine wave inverter. Appliances like microwaves can struggle with a modified sine.
  • Thank you so much!

    I believe the system, (Keystone and KZ), come with 1300 watt inverters, but I was already thinking a 2000 watt would be a worthwhile upgrade.

    Knowing that 500 watts with moderation will work, is huge, again I thank you both! :)
  • Usually 500 solar will do it all but the proof is determined by doing an energy use servey (either actual use or desire use) which helps you determine how many battery amp hours you need. That number helps you determine the solar watts...1 amp hour to 1 solar watt is common but don't be afraid of 1 to 1 1/2. Then you can match a controler. Use BIG wire.
  • Generally yes 500 watts will run those items fine. Go easy on the coffee/microwave for best results. I assume it will come with four batteries to drive a 2000 watt inverter.
  • The solar panels are only part of the equation. You will also need a big enough battery bank and inverter to run things like a microwave and coffee maker but yes 510 watts should be enough to meet those demands. Microwave and coffee maker do consume a fair amount of amperage but only for a short period so overall impact isn't great. The other loads like fan, lights (use led) and TV don't consume a lot of power unless you are using them frequently.

    As you point out quality of sunlight will play an important role in battery state of charge. If you have no back up power supply such as a generator you may have to moderate the use of your electrical devices to keep the battery from being overly discharged during periods of cloudy skies.