Without dropping too far down the rabbit hole of semantics, here's an example of a project which put "waste" byproducts to use which would otherwise be flared off by producers, and reportedly lowered CO2-equivalent emissions by as much as 63% compared with continued flaring:

https://www.argusmedia.com/en/news/2261931-bitcoin-miners-he...

Some will argue it becomes a crutch incentivizing oil to keep producing, but it's not like the plant was uneconomical or likely to close down before the recapture outfit came along.

TeraWulf is another interesting one - they plug directly into a nuclear plant and help smooth the demand curve off-peak (reactors can't quickly ramp up and down so the energy produced would otherwise go unused / unpaid for). Discussed in this article along with a few others:

https://www.forbes.com/sites/digital-assets/2023/07/04/4-bit...