More than 20 community projects in London, East Anglia and the South East have been awarded grants totaling £180,000.
Organisations were invited to apply for up to £10,000 each from the UK Power Networks Power of Giving Fund.
The fund offers grants to community projects across the three regions, particularly those which enhance energy efficiency or reduce fuel poverty.
A total of 21 applicants received funding. Among the successful applicants was Sussex Wildlife Trust, which was awarded £9,950 for its energy efficient wildlife garden.
Tunbridge Wells and District Citizens Advice Bureau secured £7,773 for an ambassador to promote energy advice to rural communities.
Meanwhile, the Royal Voluntary Service in Hertfordshire was awarded £9,995 to train 10 volunteers who will provide practical advice on energy efficiency for older people.
And the Suffolk Befriending Scheme secured £10,000 to provide coaching and mentoring to people affected by fuel poverty.
Groups receiving funding in London included Age UK, which was granted £9,800 for 12 events aimed at tackling fuel poverty. Bio Regional also secured £10,000 to create a community garden in Wallington, Sutton.
“We are delighted to award this money. Community projects like these are so important and require a lot of hard work and dedication from all those involved,” said Matt Rudling, UK Power Networks director of customer services.
“The Power of Giving Fund is our way of giving something back to the communities where we live and work.”