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How to power an outdoor wedding without a generator

Happy Planet Power, Portland, Maine. Updated October 2026.

Rent a battery power unit sized for your reception and have it delivered charged. A 12 kW, 18 kWh unit runs the lighting, music, catering equipment and phone charging for a typical tented reception without an engine, fuel or exhaust.

Why couples skip the generator

A generator is the cheapest way to power a field or a headland, and it is also the loudest and smokiest thing at the wedding. National parks treat generator noise as a disturbance and cap it at 60 decibels at 50 feet. Portable generators also cause an average of nearly 100 carbon monoxide deaths a year in the United States, according to the Consumer Product Safety Commission.

What a battery unit runs

Happy Planet Power's unit delivers up to 12 kW at once from an 18 kWh battery, with 30 A and 50 A receptacles, 15 standard 120 V outlets and USB charging. Assuming about 80 percent of the battery is usable:

  • String lights over a tent, about 150 W: about four days.
  • A DJ or band sound system, about 600 W: about a day.
  • A coffee urn running constantly, about 1,200 W: about 12 hours.
  • A food truck or catering line, about 3,000 W: about five hours.

Add your own equipment in the power calculator to see whether one unit covers your plan.

How to plan it

  1. Ask your caterer, band and lighting company what each piece of equipment draws, in watts.
  2. Note the hours each runs on the day.
  3. Confirm where the unit can sit: level ground within cord reach of the tent.
  4. Book early for summer Saturdays, which fill first.

Tell us about your event

Sources

  1. 36 CFR 2.12, Audio disturbances (National Park Service generator limit). law.cornell.edu
  2. U.S. Consumer Product Safety Commission, January 2024 release on carbon monoxide and portable generators. cpsc.gov