As another winter season approaches, our thoughts inevitably turn to heating our homes and the ever increasing cost of this. Although gas and electricity prices have been fairly stable for a while now (falling approximately 2% each year from 2013-2015) oil prices albeit low, are typically volatile. The current scenario, which sees steadlly rising prices both at the garage forecourt and in our oil tanks, seems to be subject to almost random influences. Factors such as a strat