Keeps resilience-critical loads on a simple DC circuit, separate from an inverter-dependent AC circuit for everything else.
Cost
Medium
Upkeep
None
Skill to build
Intermediate
Lifespan
Wiring itself: 30-50+ years; breakers/switches at bus junctions follow standard electrical-hardware cycles (20-30 years)
Embodied carbon
Low
Space / material use
Low
Output timing
On-demand/controllable
Skill to repair
Intermediate
Regulation (FR example)
Fixed electrical installations must meet NF C 15-100, and a Consuel certificate is required before a new connection is energised. Grid-connected generation requires an Enedis connection agreement.
Note: Cost, carbon and footprint are rated against the other options for this same need, not in absolute terms.
General electrical-wiring industry durability consensus
What this page does not tell you
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.