In case the last post caused any confusion, it takes roughly 2 Tonnes of Wood Pellets to give the same heat as 1000 litres of heating oil. That is where my calculation is derived from.
The cost therefore of 2 tonnes of pellets roughly matched the cost of 1000L of heating oil, or in some cases provides a moderate saving. However, the savings being muted originally by the Wood Pellet Brigade was that it would cost roughly half the price of oil to run a system. This most surely is NOT the case now.