25% der britischen Bevölkerung leben über stillgelegte Kohleminen. Das natürliche warme Wasser dort könnte gepumpt werden, um eine Quelle für saubere geothermische Erwärmung zu ermöglichen

* Energy costs have soared across the UK, particularly for gas which provides heating for most Britons.

* Former coal regions have been economically left behind for a long while.

* Pumping hot water, from these mines, to be used to heat homes could help with both issues. It can provide a renewable and clean source of heating, while creating jobs, and reducing energy bills in poorer regions.

* The infrastructure is simple to construct. Operational test facilities have already proven their feasibility.

* New research shows that despite growing interest, projects across the UK continue to be stalled by funding gaps, regulatory hurdles and a shortage of skilled workers.

* New Zealand has demonstrated that clear rules can boost interest in renewable projects. In India, a corporate responsibility law requires companies to invest a portion of their profits into local schemes. Both approaches could help greatly for this and other projects.