Electricity North West is investing more than £3 million to upgrade the power network in Stalybridge, Buxton, Glossop and the High Peak areas.
The project, which started recently, will upgrade 7.4km of underground oil-filled power cables, with new environmentally friendly electricity cables.
Most of the power network was installed in the 1960s, including oil-filled cables and Electricity North West are investing in replacing these cables across the North West.
John Pietsch, transmission south manager for Electricity North West, said: "We not only take great pride in keeping the power on in Stalybridge, but also that we do it in an environmentally conscious way.
"These cables have been in place since 1960 and they have served the area well but it's now time for our engineers to ensure that continues by upgrading these aging cables which run alongside the Huddersfield Narrow Canal and River Tame."