Are there any green mining operators that focus on using stranded or renewable energy?

Yes — there are miners that market themselves around using stranded, curtailed, or renewable energy rather than relying purely on grid power.

A few examples:

• MARA / Marathon Digital – has pursued mining operations tied to renewable and low-cost energy sources, including partnerships focused on power optimization.
• Hut 8 – has talked about using clean energy and energy-efficient operations in its mining footprint.
• Argo Blockchain – has emphasized renewable-powered mining in some of its operations and partnerships.
• Core Scientific (before restructuring and after, depending on site/contract) has had some sites powered via low-cost energy contracts, though it’s not purely a “green miner.”
• Compass Mining (as a hosting marketplace) has offered access to hosting facilities that may use renewables or stranded energy, though it’s more an intermediary than an operator.
• Valkyrie and some smaller private operators have focused on flare gas / stranded gas mining, turning otherwise wasted energy into power for ASIC miners.

More specifically, there’s a subcategory of operators using:

• Flared gas / stranded natural gas
• Hydro, wind, solar, geothermal
• Curtailment power from grids with excess generation

Examples in the stranded-energy niche include companies like:

• Upstream Data
• Vespene Energy
• Giga Energy
• Crusoe Energy (more known for data centers and gas-to-compute, but related)

If you want, I can also give you:

1. a list of public companies,
2. a list of private / niche operators, or
3. a screening framework for identifying genuinely “green” miners versus just greenwashing.