A Berkshire theatre could become the first in the UK to use ground source heat pumps for heating.
The pumps, which harness heat from natural underground water, are planned for installation at The Hexagon in Reading.
This low-carbon heating method aligns with Reading Borough Council's aim to make the town carbon-free by 2030.
Councillor Liz Terry said: "We are committed to using innovative ways to make our buildings carbon-neutral for the future of Reading and our residents."
The redevelopment is funded by a £19.1 million grant from the government's Levelling Up Fund.
During the summer, contractors dug two 120-metre deep, 35-centimetre wide boreholes to test the flow and temperature of the water.
The results showed that 15 litres of water per second could be extracted and heated for The Hexagon complex's needs.
The water levels returned quickly after extraction, indicating minimal impact on the surrounding area.
The council has now applied to the Environment Agency (EA) for a licence to use the boreholes for this purpose.
Ms Terry said: "The Hexagon could be the first theatre which uses water which is naturally running many metres below us to heat and cool the space to make it comfortable for audiences who come and watch the wide range of shows we have to offer."
Drift Service Group carried out the exploratory work and director Richard Lane said he was "delighted to have played a key role in delivering this landmark project."
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here