Karbera credits are substantially more conservative than MCTI Combined Margin because Karbera (a) applies hourly AEF rather than annualized CM, and (b) nets to operator ownership share per Methodology v3.2. The displayed offset varies by operator's JV structure.
Annualized comparison — Engie Brasil Energia
CRIOS-v3.2 · grid-verified
Operator-level annual AEF derived from verified avoided emissions ÷ verified generation, compared against MCTI's national Combined Margin publication (0.476 tCO₂/MWh, Brazil 2024).
Karbera AEF (annualized)
0.0252
tCO₂/MWh
MCTI Combined Margin
0.4760
tCO₂/MWh
Brazil 2024 · MCTI Fator Médio
Methodology offset
-94.7%
vs MCTI CM
AEF vs CM denominator difference
Annual verified avoided emissions
825,442
tCO₂
Annual verified generation
32,703,294
MWh
The displayed offset reflects two compounding sources of conservatism: (1) AEF vs CM — Average Emission Factor (Karbera) divides verified avoided emissions by all dispatched generation, while Combined Margin (MCTI) blends Build Margin and Operating Margin where OM focuses on the marginal plant; and (2) ownership-share netting — Methodology v3.2 credits each operator only its beneficial-ownership fraction of a jointly-held asset, so JV structures (Engie, Helexia) reduce the credited number further. Magnitude is operator-specific by design.