The construction giant is supporting the MoJ using technology such as solar panels, environmentally-friendly heat pumps, and electric car charging points.
Mace is developing innovative low carbon solutions to work alongside the MoJ and reduce CO2 emissions by 280,000 tonnes, cut energy costs by £100m, and deliver safe and secure net-zero carbon prisons.
The four new prisons being built in England will reduce energy demand by half and cut carbon emissions by at least 85% compared to other prisons under construction.
During construction, 40,000 tonnes of carbon emissions will be prevented by using recycled concrete and steel.
Existing prisons are also benefiting from a £15m investment to cut their emissions. Mace is managing the installation of solar panels at a further 16 sites, bringing the total number of solar panels across the estate to over 20,000.
More than 200 electric vehicle charging points are also being installed across 40 prisons.
The project win follows Mace’s announcement of its net-zero carbon status in December 2020.
As part of Mace’s 2026 business strategy, the company is further reducing its carbon emissions by 10% year on year and has pledged to reduce client carbon emissions by 1m tonnes by 2026.
Alfie Heyland, justice and blue light sector director at Mace, said: “We are delighted deliver innovative low carbon solutions for the MoJ’s new prisons programme.
“Reducing carbon emissions is the great challenge of our generation and we are proud to be part of the MoJ’s decarbonisation ambition, making a positive impact on the environment and local communities in the UK.”