Old Coal Mines Power Clean Energy in Canadian Town

The water pooling in Cumberland's abandoned coal mines might become the town's next energy source, proving that old infrastructure can fuel new hope.

Cumberland, British Columbia built its identity on coal mining for over 80 years. The industry employed thousands and exported 16 million tonnes of coal before the mines closed, leaving behind vast underground tunnels and a community searching for its next chapter.

Now the village of 4,800 residents is looking down instead of back. In partnership with the University of Victoria, Cumberland is testing whether water trapped in those old mine shafts can heat and cool buildings across town.

The science is surprisingly simple. Water underground stays cooler than summer air and warmer than winter temperatures. Heat pumps can use this stable temperature to provide near-zero carbon heating and cooling at relatively low cost.

Mayor Vickey Brown sees the project as more than just clean energy. Cumberland already attracts mountain bikers and outdoor enthusiasts, and she believes the geothermal system could strengthen its reputation as a sustainability destination.

"This is a way to highlight the history of Cumberland and bring it into a sustainable-future, clean-energy ethos," Brown says. "We're using the waste of that old resource to transition to cleaner energy."

The mine tunnels stretch beneath much of the village, potentially serving a large portion of the community. Initial plans focus on a proposed civic precinct that could include a community center, municipal offices, and affordable housing.

Project lead Zachary Gould emphasizes the broader meaning. "It's an opportunity to look at resource extraction in a new way in a village that was built on extractive principles," he says. "This project could turn those ruins of extraction into an opportunity and a shared community asset."

The coal industry carried serious costs during its heyday. Working conditions were dangerous, and the coal itself contributed to climate change. Historian Dawn Copeman notes that the geothermal plan doesn't erase that history but reframes it.

The idea started locally when geologists living in the region began discussing alternative uses for the underground infrastructure. Unlike deep geothermal systems requiring expensive drilling, Cumberland's approach uses existing mine water to moderate seasonal temperatures.

The Ripple Effect

Cumberland's project shows communities worldwide that industrial legacies don't have to be liabilities. Hundreds of former mining towns face similar questions about their future, and many sit above similar underground networks.

If successful, this model could be replicated in coal mining regions from Appalachia to Wales. The technology isn't experimental, it's just a creative application of existing geothermal principles to abandoned infrastructure.

The project also demonstrates how communities can honor their history while building something new. Cumberland isn't pretending the mines never existed, it's finding a way to make them useful again without the environmental cost.

For a village once defined by extracting resources from the earth, becoming a model for clean energy feels like coming full circle with a better ending.