In the Brecon Beacons National Park 30,000 people currently rely on oil or LPG-powered heating systems because they aren't on mains gas.
The Green Valleys is a community interest company based in the 520 square mile National Park. It aims to change the way residents in the park get their energy by helping them establish community-owned hydro electric schemes.
The schemes allow any profit generated by such schemes to be ploughed back into the community for projects such as establishing community woodlands and allotments.
But it's tapping into the area's plentiful supply of water that has been the main focus of project so far.
The Green Valleys is the brainchild of the Brecon Beacons National Park's Grenville Ham, an expert in the renewal energy sector.
He said: "We want to see this area become sustainable in creating its own energy through community-owned hydroelectric systems.
"We don’t want to be at the mercy of expensive corporate companies any longer," he added.
An Eco Travel Network has been established in the Brecon Beacons National Park.
The network came was launched in July 2012 to combat the contribution of traditional road vehicles to the carbon footprint of the Brecon Beacons National Park.
The scheme was launched because a survey showed a visitor to the Park drives an average of 300 miles during a one week stay – at a cost of 50,000 tonnes of CO2 a year.
With this in mind, more than 20 electric vehicle charge points have been installed alongside a new fleet of six Renault Twizys.
To date, 13 hydro schemes have been established in the Brecon Beacons National Park.
The largest is 36kW community-owned hydro electric scheme in Talybont-on-Usk which has been running since 2006.
This now generates more than £20,000 per year for the local community.
To install enough hydroelectricity schemes to generate around 40 per cent of National Park homes' electricity within 10 years.
Start installing one hydro scheme per month from 2011 - around a dozen schemes have already been designed and are in the final stages before work begins.
Money earned from community projects will be reinvested in other innovative carbon reduction initiatives.
The Green Valleys offers not-for-profit advice and support to communities interested in micro-hydro including: