I haven't seen data that on that in the context of power plants. Not saying it doesn't exist, I just haven't seen it if it does. @profbobhowarth.bsky.social any idea? In the context of urban distribution pipelines, a study found that emission rates were mostly insensitive to gas use. Let me dig...
Okay, the data I was thinking of show that methane emissions do correlate with gas use. Over 8 years in Boston, methane emissions from gas distribution/use were 28-58% lower in summer than in winter, likely due to less gas heating.
Emissions also dropped 22-42% during April 2020 (Boston covid lockdown) relative to other Aprils, likely due to less gas cooking in restaurants. www.pnas.org/doi/abs/10.1...
"We find that NG emissions and consumption are highly cor- related. This is surprising, because distribution pipelines, thought to be a dominant source of NG losses, are at fairly constant pressure year-round, and thus, their emissions are not expected to vary with consumption."
From those data, very roughly, it looks like about half of methane emissions from urban gas systems scale with gas use and about half do not.
Thanks for tracking that down!