Site-dependent on adequate, consistent wind exposure.
Note: Cost, carbon and footprint are rated against the other options for this same need, not in absolute terms.
Site-dependent on adequate, consistent wind exposure, open terrain, away from trees/buildings; a real constraint for a bocage-normand hedgerow landscape
No sizing or quantities: how much a technique yields, and how much a household needs, both depend on the build and the people, so the catalogue compares options rather than dimensioning them. It carries no bill of materials and no build sequence, and it is written for an oceanic, clay-soil climate (Normandy, France). Regulatory notes are indicative and need confirming locally.