
OFFGRIDDR - Harvest, Store, Use
Harvest what nature provides. Store it for when it doesn’t. Use it to live.
Offgriddr shows you exactly what it takes, how the systems work and what they cost.
How off-grid works
An off-grid system runs in three stages.
- Harvest: the sun strikes the roof array while wind turns the turbine, so the site makes its own electricity through daylight hours. The garden and the woodpile fill the same way.
- Store: that electricity runs down the conduits into the battery bank, which fills while production stays ahead of demand. Food and firewood are stored the same way, against the same winter.
- Use: after dark the bank runs the house. Lights stay on, the pump lifts water into the tank, and the day’s harvest is already in the ground and the store.
Harvest the sun. Store what you need. Use it after dark.
Explore off-grid living
The architecture of an off-grid home. Pick a category. We go deep.






Calculators
15 tools for sizing and building an off-grid home. URL-shareable, so a configuration is a link you can send to a friend.
- Daily and Yearly Energy Use CalculatorList your household devices, see daily and yearly kWh. Start here before sizing solar panels or batteries.
- Solar Panel Count CalculatorEstimate how many solar panels you need from annual kWh, panel wattage, roof direction and your region's PVGIS solar yield.
- Off-Grid Battery Size CalculatorSize a battery bank from daily load, voltage, autonomy days, depth of discharge and inverter efficiency.
- Inverter Size CalculatorMinimum continuous watts (and VA) and surge rating for an inverter from continuous load, peak load, battery voltage and phases.
- Off-Grid System Cost EstimatorPrice ranges ex VAT for an off-grid or grid-connected solar and battery system across three paths: DIY, off-shelf kit and professional. Dutch prices, October 2026.
- Solar Payback Period CalculatorYears to break even on solar, with and without net metering (Dutch salderen ends 1 January 2027), including degradation and inverter replacement.
- All 15 calculators
What’s your off-grid path?
Pick the closest fit. Each leads to a tailored read.
Real Projects
Homes and projects shared by the people who made them, with their videos, photos and the steps they took.

Real Projects
Building something awesome? Show it off
Give your project its own page on OFFGRIDDR. Add your videos, photos and the steps you took, one post at a time. Others learn from what you did, and you keep a record of how far you came.
Off-grid by climate
Snow or scorching sun: the weather changes the whole plan.
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