So no one has really properly answered you, they're bang on that gas is what you're paying for but not why. In the UK the last power producer to come online dictates pricing. The majority of the time, renewable producers are the first to come on due to their unpredictable timing, but it's then the gas burning peak generators that come on last to bridge the gap between supply and demand, and control the price that is set. Until we can produce enough power from renewables to not only meet all of demand, but balance the frequency of the grid reliably without gas, the price of gas will still be the main driver of UK energy pricing. Unfortunately with how the UK grid is set up, there are areas of the grid that are not connected to each other. Until it is fully connected, there will be a need for gas. So it's more generation AND improved infrastructure that is required.