The UK Grid needs to evolve as all Grids need to throughout the world due to massive home generation and also massive home battery storage. If there is any Black Outs or Brown Outs one will soon see which homes and businesses have invested in resilience by their lights still on. UK home generation is now estimated at over 3 GWs though this is of course dependent on good solar input. Storage, business and home, is over 10 GWh by many estimates and that figure is expected to increase several fold over the next 4 or 5 years. Projects like the Great Glen, 30 GWh, will add to Dinorwig's 9 GWh plus other slammer plants to increase resilience. Of course their are "Preference Trips" in place which trip out some business and loads such as street lights to maintain supply to homes and hospitals which could be running breathing assistance equipment though hospitals should have emergency gennies which I expect are being replaced with battery systems as a matter of course. Electricity is the only way forward though backup to Grid supplies are needed of course, even if that is ICE as no one if their right mind should object to ICE, or gas turbines as with power stations, being an emergency backup for a few hours.