Why should investors treat methane's global warming potential as a two-edged number?

Methane's GWP is about 28-30 over 100 years and around 80 over 20 years, so avoided methane is the core climate value of CBG. The same potency means on-site leakage sharply erodes the net benefit, which is why diligence should require leak detection and a specified maximum methane slip rather than taking the carbon claim on trust.

Source

IPCC GWP values; RED II uses a 94 gCO2e/MJ fossil comparator

sourced

Traceable to a named source.

Level

Investor & policy — Money, risk, and what the policy actually says.