Radical plan to use loch water to heat up homes

Aradical idea has been unveiled to use Loch Leven to fuel a district heating system by extracting water from the loch and using it to heat homes and public buildings.

The proposal was presented to members of the Kinross-shire Local Committee on Thursday, with committee convener Willie Robertson saying he had been approached by David Cairns.

Mr Cairns has been working with CATCH (Climate Action Through Community Heating) to explore whether it would offer a “plausible route to affordable heating for the residents of Kinross and Milnathort while reducing carbon emissions”.

He said CATCH formed “after a rather depressing COP26”.

Mr Cairns added: “It’s very obvious as a community we have opportunities to work together to move the carbon needle.”

He told committee members Loch Leven had “high potential” as an energy source but – as a Special Protection Area – presented constraints too.

He said: “If we are going to look at leveraging heat from the loch, the loch as a nature reserve has very strict constraints.

“Protecting Loch Leven as a nature reserve has to be the No 1 priority from a nature point of view.”

Douglas Fraser of Glenfarg Community

Council expressed several concerns, as he wondered about the effect on the loch: “the suitability of existing heating systems as to whether they are adaptable”, the temperature of the water that would be circulating, where funding would come from fearing it could be a “very expensive exercise”, and ongoing maintenance.

He said: “I’ve had experience of working on district heating systems, and generally it’s been to rip them out and replace them because of the high costs of maintaining them, which has become unsustainable.”

Mr Cairns suggested the proposal could take a “useful amount of heat out of the loch” and consequently help the loch’s “algal problem”.

He said: “There are real challenges with the amount of phosphorus getting into the loch – they are aggravated by the rising temperatures of the loch.

“There is an obvious question whether if you take a useful amount of heat out of the loch that is actually something that might be beneficial for the ecosystems.”

After the meeting a spokesperson for Perth and Kinross Council said opportunities to create district heating systems is something the council will explore as part of its climate change strategy.

A Perth and Kinross Council spokesperson said: “Since the approval of the Perth and Kinross Climate

Change Strategy in December 2021, council services are following the associated action plan.

“Opportunities for district heating are a part of the action plan, and the current rises in energy prices improves the potential viability of these schemes.

“Our local development plan includes a policy requirement for all new developments to show they can make a reduction in carbon emissions, as set by the Scottish Buildings Standards, through the installation and operation of low and carbon-zero generating technologies, including heat pumps.”

Mr Cairns added: ““We hope to progress to a credible commercial feasibility study next year.”