National Grid (NG) has finally released figures of 'distributed' renewable energy - that is solar and wind power connected at the distributed as opposed to transmission level of the electricity system. These figures reveal that such distributed renewables will contribute around 7 per cent of UK electricity supply on an annual basis. This includes around 5.7 GW of wind power and 13 GW of solar power, each of which types contribute roughly the same amount of energy on an annual basis.
For years people like me have been complaining that the National Grid's transmission figures - routinely repeated by people who think they know what is going on - have greatly underestimated renewable energy generation capacities. But now the NG has come clean - apparently, though, only in the process of using the information to argue that they have the answer - batteries. See:
Of course the Government publishes annual renewable energy generation figures which includes all sources, but the NG data has always looked like (in fact was) a great underestimate of the total renewable energy capacity, which is now enough to generate around 30 per cent of UK electricity supply on an annual basis. But the new NG figures allow us to plug the rather large gap between the (misleading) NG figures for the capacity connected to the transmission network and the real total amount of electricity generation.
Of course what is really needed to deal with the 'variability' of distributed generation is a much bigger role for the electricity distribution companies in balancing their own levels of demand and supply rather than the problem simply being passed through to the National Grid. Whether the distributed electricity companies are up to the task is another question.
Perhaps it is here that greater public involvement in their management comes in. But it should be 'bottom-up' management, not a state replication of the current local distribution monopolies owned by different multinational corporations. Ideally boards of the distribution companies should be elected, and that will inject some desire to develop a sustainable energy system that responds to popular modes of generation and popular needs.