The most common and advanced forms of renewable energy are characterised by their intermittent nature. Put simply, the energy harvested from, for example a wind turbine or solar panel, is only available when the wind is blowing or the sun is shining. The much pointed out drawback being power is not always generated when it is most needed.In the quest to achieve lower carbon energy use, this fundamental characteristic of renewable power should be considered with respect to creating a low carbon future based on our ability to harness, store and use renewable energy at all times.Renewable power is the only genuinely green energy form, all other forms either release CO2 to the atmosphere and/or consume fossil fuel reserves. So if we are to maximise an energy system that is built mainly on renewable power present day policies must change quickly. Green electricity is arguably the most sustainable form of energy but it cannot always be matched to demands for heat, power and mobility without energy storage.Britain’s present one-dimensional renewables policy that emphasises generation come what may needs replacing by a two-dimensional alternative that couples generation with storage.Read the full policy by downloading the attached pdf.