﻿ EV calculator web version
 EV Energy & Emissions Calculator (light vehicles/cars) Boxed squares below are inputs: Input/Output Unit Scenario 1 Scenario 2 EV inputs Average efficiency Wh per km Annual km per car km per year Total number of cars number Electricity Supply Total electricity supply (without EVs) GWh per year Grid losses % electricity lost between generation and EV Carbon intensity of electricity mix g CO2 per kWh of electricity generated Conventional cars Average efficiency km per (UK) gallon Carbon emissions from fuel kg CO2 per (UK) gallon combusted KEY RESULTS: New electricity generation for EVs GWh per year Impact of EVs on total electricity % increase Annual CO2 per EV kg CO2 per year per car (using annual km) Annual CO2 per conventional car kg CO2 per year per car (using annual km) Calculator © Grey Cells Energy Ltd. 2017 Visit: https://greycellsenergy.com Questions? info@greycellsenergy.com
 Notes: Units: 1kWh = 1,000 Wh 1GWh = 1,000,000 kWh 1 US gal = 0.83 UK gal Emissions: kg CO2 per kWh can be found at sites like this one: http://www.mygridgb.co.uk/ (NB. shows in grams, so divide by 1000 for kg) 8.9kg CO2 per US gallon petrol/gasoline combusted (wiki) = 11kg CO2 per UK gallon Energy content: 1 gallon petrol energy content: 35.3 kWh per US gal = 42 kWh per UK gal (en.wikipedia.org/wiki/Gasoline#Energy_content) Prefer diesel? It's about 11% more energy dense by volume than petrol, so ~46-47 kWh per gallon. But CO2 emissions are pretty much the same per volume as petrol. Car sources (reality check!): EV Wh per km, offical figures & motoring website sources: e.g. Nissan Leaf 150 Wh/km; BMW i3 160-190 Wh/km; Tesla S 200 Wh/km Petrol (nextgreencar.com): Fiat 500 118km/gal & 88gCO2/km (offical); BMW 3-series estate 113km/gal & 104gCO2/km NB emissions units: 100g per km = 0.1 kg per km UK car data number of vehicles: http://www.racfoundation.org/motoring-faqs/mobility#a1 annual mileage: http://www.racfoundation.org/motoring-faqs/mobility#a24 (convert mile to km: x 1.61) UK other Annual GWh electricity: from National Grid FES (http://fes.nationalgrid.com/fes-document/) Calculator © Grey Cells Energy Ltd. 2017 Visit: https://greycellsenergy.com Questions? info@greycellsenergy.com