A surveyed heat-loss elimination project arrives with exactly what both regimes want: a quantified t CO2/yr figure (audit-grade, ASTM C680) for the EnEfG implementation plan, and a grant case for EEW where each of those annual tonnes is valued at up to €500 in the competitive strand. Example: a 45 t CO2/yr insulation programme = up to €22,500/yr of valued reduction in the funding logic, on top of the fuel saving itself.
From our guide: Germany Pays for CO2 Reductions — full context, charts and sources there.