A Welsh family has adopted several technologies to generate heat and power for their 160-acre dairy farm in anticipation of rising energy prices and increased awareness about carbon emissions.The Western Mail reported that with the increasing costs of fertiliser, feed and fuel for farmers, some have decided to take action by installing a range of microgeneration technologies.For Wyn and Chris Evans, this means generating power through the methane gas produced by cattle slurry, as well as employing solar energy and wind power and a ground source heat pump."When you start to produce your own power you realise the concept of a kilowatt or a joule and you are more wary about using it. You are always looking at your water temperatures," Wyn Evans told the newspaper.He added that he aims to one day produce all of the energy used to power the farm through renewable means and estimated that current energy production on the farm covers around 40 percent of all operating power.Meanwhile, it emerged this week that the Welsh Assembly Government has granted approval for three firms to seek planning permission to construct windfarms in woodland areas managed by Forestry Commission Wales.