Off-Grid Solar Calculators

Complete system: panels + batteries + inverter + controller.

Weekend cabin or full-time — size your system.

Tiny house, big energy. Get the math right.

Power your shed or workshop with solar.

Solar-powered well pump sizing.

Solar thermal water heating sizing.

Solar pool heating panel sizing.

Irrigation and water transfer pump sizing.

Electric fence energizer sizing.

Emergency backup power sizing.

Replace your generator with solar + battery.

Portable power station sizing.

Size your portable power station for camping.

Side-by-side 20-year cost comparison of solar vs fuel generators.

Size a solar carport: panels, power, EV miles, and cost.

Power tools, EV charging, and lighting from solar.

Replace your generator with rooftop solar panels.

Size solar for shipping container homes with heat analysis.

Size a solar water pump for agricultural irrigation.

Power grow lights, ventilation, and heating mats with solar.

Automatic doors, heated waterers, and egg-production lighting.

Size solar for chest or upright freezer with food safety planning.

Design a residential microgrid with islanding capability.

Size a portable solar system for CPAP therapy while camping.

Solar-powered sump pump with emergency flood backup.

Power hydroponic grow systems with solar panels.

Size solar for remote security cameras without wiring.

USDA REAP grant + ITC for dairy, poultry, grain, and horse barns.

Run a pellet stove on solar with winter sizing.

Heat loss, solar collector area, water barrel thermal mass, and backup heater sizing.

USDA REAP grant + ITC + MACRS for dairy operations with energy breakdown.

12V lighting system for poultry houses — supplemental hours by month and egg production improvement.

12V winter hive heating — passive vs active comparison and colony survival improvement.

Replace diesel generators at cell towers with solar + battery.

Temporary solar power for job sites — replace noisy generators.

Size solar-powered reverse osmosis systems for clean water.

UV, RO, and distillation solar sizing for safe drinking water.

Site-level solar sizing for campgrounds and RV parks.

Off-grid ice production with solar panels.

Portable and base station solar for amateur radio.

Seasonal off-grid cabin solar sizing.

Standalone solar for garage doors.

Off-grid power system sizing for yurt living.

Liveaboard solar system sizing for houseboats.

Per-unit and site-wide solar sizing for glamping.

UK off-grid shepherd hut solar system in GBP.

Size solar for fish + plant systems with critical aerator battery backup.

48-hour critical aeration backup and diesel generator savings comparison.

Active PV sizing for earthships — see how little solar passive design requires.

24/7 climate control sizing with production and revenue estimates.

Deployable solar for emergency response.

Lightweight solar with tree weight limits.

Center-pivot agricultural irrigation solar sizing.

Lumber dehumidification solar sizing.

Commercial drying solar sizing.

Floatovoltaics sizing on water surfaces.

Standalone solar sizing for parking meters.

Remote solar sizing for drone fleet charging.

Complete off-grid kit bill of materials for tiny homes.

Smart transit shelter solar sizing.

Maritime navigation aids solar sizing.