Lowtech Graph lists low-tech options for every need of a home. Here you can compare them, find tutorials to build them, and link them together into a circular system. Why low-tech?
One of 11 ways to meet this need. Cost, carbon, footprint and rankings are relative to other solutions for the same need, not absolute.
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Same winter-performance caveat as the household biodigester
The gas from a household digester piped to a cooker burner or lamp, in place of firewood or bottled gas. Once stored in its bag, it burns on demand like any bottled gas, through a burner made for it. Production slows in winter unless the digester is kept warm.
Levels are relative to the other options for this need, not absolute. Fewer dots is lighter.
Household anaerobic biodigester (biogas cooking fuel) (This page) Can I use it? Works in a flat · No rebuilding needed What does it cost me? Upfront cost: Medium · Skill to build: Basic · Upkeep: Light · Change to daily life: Occasional · Works without the grid: Yes Choose it if you run a biodigester and want its gas to cook with.
Wood cookstove Can I use it? Works in a flat · No rebuilding needed What does it cost me? Upfront cost: Low · Skill to build: Basic · Upkeep: Heavy · Change to daily life: Daily · Works without the grid: Yes Choose it if you want the same wood fire to cook and to heat the kitchen.
Solar cooker Can I use it? Works in a flat · No rebuilding needed What does it cost me? Upfront cost: Low · Skill to build: Basic · Upkeep: Light · Change to daily life: Daily · Works without the grid: Yes Choose it if you want to cook for free on sunny days, with no fuel and no smoke.
Rocket stove cooker Can I use it? Works in a flat · No rebuilding needed What does it cost me? Upfront cost: Low · Skill to build: Basic · Upkeep: Heavy · Change to daily life: Daily · Works without the grid: Yes Choose it if you want to cook on a handful of twigs with little smoke.
Induction cooktop Can I use it? Works in a flat · No rebuilding needed What does it cost me? Upfront cost: Medium · Skill to build: Basic · Upkeep: Light · Change to daily life: None · Works without the grid: No Choose it if you want the most efficient hob there is.
Haybox / retained-heat cooker (fireless cooker) Can I use it? Works in a flat · No rebuilding needed What does it cost me? Upfront cost: Low · Skill to build: Basic · Upkeep: None · Change to daily life: Daily · Works without the grid: Yes Choose it if you want to cut the fuel for slow-cooked dishes by up to four fifths.
Micro-gasifier (TLUD) cookstove Can I use it? Works in a flat · No rebuilding needed What does it cost me? Upfront cost: Low · Skill to build: Basic · Upkeep: Light · Change to daily life: Daily · Works without the grid: Yes Choose it if you want to cook cleanly on wood and keep the charcoal it leaves.
Solar-powered insulated electric oven Can I use it? Works in a flat · No rebuilding needed What does it cost me? Upfront cost: Low · Skill to build: Basic · Upkeep: Light · Change to daily life: Daily · Works without the grid: Yes Choose it if you want to cook with the sun even after it has gone, from your solar panels.
Gas hob / cooker Can I use it? Works in a flat · No rebuilding needed What does it cost me? Upfront cost: Low · Skill to build: Specialist · Upkeep: Light · Change to daily life: None · Works without the grid: No Choose it if you want instant heat that keeps working in a power cut.
Insulating pot skirt Can I use it? Works in a flat · No rebuilding needed What does it cost me? Upfront cost: Low · Skill to build: Basic · Upkeep: None · Change to daily life: Occasional · Works without the grid: Yes Choose it if you want the flame’s heat to stay on the pot while it cooks, for a few euros.
Earth wood-fired bread oven Can I use it? Not in a flat · No rebuilding needed What does it cost me? Upfront cost: Low · Skill to build: Intermediate · Upkeep: Light · Change to daily life: Occasional · Works without the grid: Yes Choose it if you want to bake bread and pizza outdoors on wood, without heating the house.
We don’t list sizing or quantities, as the yield of each technique depends on the quality of its build. The catalogue compares options but doesn’t dimension them. Regulatory notes are indicative, with a French example, and need to be confirmed locally.