We chose that particular point in time as it was a reference point continually used by the media. If you took the graph back a further two years, you would see a very similar picture - a significant spike and then a smaller fall in the wholesale price. This was due to Britain's largest offshore gas storage facility being off line which led to high market prices.
Both graphs would illustrate the same activity within the market – a huge peak in wholesale prices reflected by a much smaller peak in our retail prices.
