icWales: CYNON Valley firm Pennant Walters says the wind farm it wants to build on the mountainside overlooking the Cynon Valley would produce enough electricity to power around 20,000 homes. It would contribute to targets set by the Welsh Assembly Government to cut dependence on fossil fuels as sources of energy and thus reduce carbon emissions which contribute towards global warming. In a statement, Pennant Walters said: "Interest in renewable energy production, such as that produced …