EnEfG heat-ready design
Operating| Figure | Value | Source |
|---|---|---|
| ERF 2026 | 10%medium conf. | EnEfG · 2026-07 (citation) |
| ERF 2027 | 15%medium conf. | EnEfG · 2027 (citation) |
| ERF 2028 | 20%medium conf. | EnEfG · 2028 (citation) |
Germany’s EnEfG mandates a rising energy-reuse factor — 10% (2026 starts), 15% (2027), 20% (2028) — making heat-ready design a regulatory floor.
How it maps hereREGULATORY-tier; SYN-HEAT member; the floor is not the ceiling.