Nearly 45% of the UK’s power already comes from gas, mostly generated by combined cycle gas turbine (CCGT) power plants. But while CCGT plants can deliver a steady supply of baseload power and flex up and down within seconds – just like Drax Power Station does with both coal and biomass – they can’t turn on and be at full capacity at very short notice. Starting from cold to quickly power the equivalent of a small city in a matter of minutes rather than hours or days, however, is exactly what the UK power network is increasingly going to need.
Solar and wind power can’t generate electricity when it’s dark or still. So to facilitate more of these intermittent renewables coming onto the grid, we need sources that can be quickly ramped up to ‘fill the gaps’ when lower carbon technologies aren’t able to provide the essential power for the modern world. This is where OCGT (Open Cycle Gas Turbine) stations such as Millbrook Power in Bedfordshire come in, alongside other standby technologies such as storage and demand side response.