Solar plans, official manuals, and honest gear picks for RV owners.

Starting points

Resources

Where to look for a campsite, how to handle the dump station, every Megawatt tool in one place, and the power terms our guides use.

Find a site

Where to camp

We don't keep our own campground list. These are the official sources the parks and agencies update themselves.

The unglamorous part

Dump stations

Use the campground's own dump station and follow its posted rules. Many charge a fee if you aren't staying there, and some close in winter.

The 2019 Bounder owner's manual says to keep the black tank valve closed until you dump, and it's fine to leave the gray valve open while you're on a sewer hookup. Most owners dump black first and gray second, so the soapy gray water rinses the hose on its way out.

Check your own coach's manual for its valve layout. The arrival checklist has the hookup order.

Megawatt tools

Everything else on the site

The calculators, planner, and manuals are in the main menu. These are the extras. Two are waiting on outside services before they switch on.

All calculators
  • Ready to use

    My Rig

    Save your coach once. Guides, manuals, kits, and the forecast open on it.

  • Ready to use

    Solar forecast

    Seven days of expected panel output for your ZIP code, from live sunlight data.

  • Ready to use

    Problem fixer

    Step-by-step checks for a dark coach, a quiet fridge, a stuck slide, and more.

  • Ready to use

    Gear kits

    Bundles of the Amazon gear Megawatt already recommends, with one-click carts.

  • Ready to use

    Owner builds

    Send in your own solar build. Nothing is published until James reviews it with you.

  • Ready to use

    Solar payback chart

    When a solar setup pays for itself against generator fuel and hookup fees.

  • Coming soon

    Ask Megawatt

    Questions answered from the manuals, guides, and checklists on this site.

    Turns on once an AI service is connected.

  • Coming soon

    Maintenance reminders

    Seasonal emails for winterizing, spring startup, and monthly checks.

    Turns on once an email service is connected.

Plain English

Glossary

The terms our guides and calculators use, said once and simply.

Shore power
120-volt power from the campground pedestal. The 2019 Bounder gas manual describes a 30-amp cord for that coach. Yours may be 50 amps.
House battery
The battery bank that runs the lights, pump, and fans inside. It's separate from the chassis battery that starts the engine.
Watt-hour (Wh)
One watt used for one hour. A 100 W TV on for three hours uses 300 Wh. Our calculators count your day in watt-hours.
Amp-hour (Ah)
Battery capacity at a given voltage. Multiply by the voltage to get watt-hours: a 12.8 V, 300Ah lithium battery holds about 3,840 Wh.
Peak sun hours
How many hours of full-strength sun a day adds up to. Our calculators use 3 for winter, 4 for spring and fall, and 5.5 for summer and the desert.
LiFePO4
Lithium iron phosphate, the battery chemistry most RV lithium batteries use. It needs a charger with a lithium setting.
Inverter
Turns 12-volt battery power into 120-volt household power for outlets and appliances.
Boondocking
Camping without hookups: no shore power, water, or sewer. Also called dry camping.
GVWR
Gross vehicle weight rating, the most your coach may weigh loaded. It's on a sticker near the driver's seat.
GCWR
Gross combined weight rating, the most the coach plus whatever it tows may weigh together.
Payload
What's left of the GVWR after the coach itself. People, gear, water, and propane all count against it.