Burning wood as a heat source in one of our highly effiecient stoves is better in environmental terms to many other forms of heating as the amount of carbon dioxide released into the atmosphere is the same as that absorbed by the tree during growth. It is also a renewable resource, particularly when derived from plantations and cultivated woodland. The Forestry Commission have recommended that millions of trees are planted to cover an extra 4% of the UK in woodland, equivalent to 30,000 football pitches a year, increasing the UK's total woodland cover to 16%. According to the Solid Fuel Technology Institute, logs are the cheapest form of heating energy. The cost per kW of useful energy is now around 4p. This compares to 5p for anthracite, 7p for natural gas, 7.5p for oil, 9p for LPG and 12p for electricity.