London is on the natural gas grid, as they are on the electricity grid.
What they have found is that if they look at their systems, they can find ways of harnessing energy from their local waste. They can harness waste heat from their industries to then put into use in their residential and commercial. So it's the systems look, and I think in totality, as I said, they anticipate achieving a 55% reduction.
How is that split between gas and electricity? I'm not sure, but I assure you it's not.... It's coming off one field and it's going on to the other one. They're bringing in geothermal, they're bringing in passive solar, and they're bringing in energy from waste.