Note 1: Current & Potential Future Annual UK Electricity Demand

Current: 346 TWh total (104 TWh domestic; 92 TWh industrial; 72 TWh commercial; 18 TWh public administration; 4 TWh agriculture; 6 TWh transport; 24 TWh energy industry use & 26 TWh transmission losses) in 2019 (pre-Covid) with 60 GW peak and 34 GW average power supply via the National Grid.

Potential Additional Future Demand for electricity by 2030–2035 depending upon our collective ability to support the adoption of the best available solution (which could be improved over time if alternatives were of proven benefit to the achievement of the overall challenge):

Road Transport – 120 TWh (74 TWh cars; 20 TWh LGVs, 25 TWh HGVs; 1 TWh buses & coaches) based upon 100% EV. [ref. Note 7]

Heating – 110 TWh (88 TWh domestic + 22 TWh commercial) based upon 100% air source heat pumps (ASHP or ground or water source heat pumps if more appropriate in specific locations) supplemented with solar thermal systems on roofs of houses / buildings, if necessary. [ref. Note 8] Total Potential Future Demand for electricity by 2030 – 2035 is 576 TWh assuming that electricity demand and supply efficiencies [ref. Note 9] per unit of electricity-consuming activity will equal the increased electricity demand driven by future economic growth and the associated increase in overall levels of activity. If the “Best Available Solution” is adopted, then the Total Potential Future Demand for electricity by 2030 – 2035 will be reduced by 50 TWh pa to 526 TWh pa since the energy industry use (24 TWh pa) and transmission losses (26 TWh pa) will be avoided.