{"success":true,"version":"v1","request":{"tool":"get_calculator_schema","calculator_id":"carbon-footprint-electricity"},"result":{"entity_type":"calculator","id":"carbon-footprint-electricity","calculator_id":"carbon-footprint-electricity","canonical_url":"https://tttkmbb.com/weather/carbon-footprint-electricity","name":"Electricity Carbon Footprint Calculator","title":"Electricity Carbon Footprint Calculator – CO₂ from kWh and Regional Grid Emission Factor, with Tree Equivalents","category":"weather","category_name":"Weather & Environment","tool_name":"estimate_electricity_carbon_footprint","featured_mcp_tool":false,"description":"Multiplies electricity consumption by a regional grid emission factor (world, US, Australia, EU, China, India or a custom value, kg CO₂ per kWh) to estimate monthly and yearly CO₂, and expresses the yearly total as mature-tree absorption years.","use_when":"You want the CO₂ emissions of a household or device's electricity use, an EV's charging, or to compare regions' grid intensities.","do_not_use_when":"You know your supplier's specific factor or use certified renewable energy (enter it as a custom factor), or you need the cost of the electricity (use electricity-cost).","inputs":[{"name":"electricity_kwh","label":"Electricity used","type":"number","required":true,"min":0,"max":1000000000,"description":"Kilowatt-hours consumed in the chosen period.","example":300},{"name":"period","label":"Period","type":"enum","required":false,"default":"month","values":[{"value":"month","label":"Per month","aliases":["monthly"]},{"value":"year","label":"Per year","aliases":["yearly","annual","annually"]}],"description":"Whether electricity_kwh is a monthly or yearly amount.","example":"month"},{"name":"region","label":"Grid region","type":"enum","required":false,"default":"world","values":[{"value":"world","label":"World average (0.49 kg CO₂/kWh)","aliases":["global"]},{"value":"us","label":"United States (0.37)","aliases":["usa","united states"]},{"value":"australia","label":"Australia (0.65)","aliases":["au"]},{"value":"eu","label":"European Union (0.25)","aliases":["europe"]},{"value":"china","label":"China (0.58)","aliases":["cn"]},{"value":"india","label":"India (0.71)","aliases":["in"]},{"value":"custom","label":"Custom factor (use custom_factor_kg_per_kwh)"}],"description":"Grid whose average emission factor is applied.","example":"world"},{"name":"custom_factor_kg_per_kwh","label":"Custom emission factor","type":"number","unit":"kg CO₂/kWh","required":false,"min":0,"max":2,"description":"Your own grid or supplier factor; used only when region=custom.","example":0.2}],"outputs":[{"name":"emission_factor_kg_per_kwh","label":"Emission factor","type":"number","unit":"kg CO₂/kWh","decimals":3,"description":"Factor applied."},{"name":"region_description","label":"Factor source","type":"string","decimals":4,"description":"Region, source and data year of the factor."},{"name":"co2_kg_per_month","label":"CO₂ per month","type":"number","unit":"kg","decimals":1,"description":"Monthly emissions (yearly ÷ 12 when a yearly amount was given)."},{"name":"co2_kg_per_year","label":"CO₂ per year","type":"number","unit":"kg","decimals":1,"description":"Yearly emissions (monthly × 12 when a monthly amount was given)."},{"name":"co2_tonnes_per_year","label":"CO₂ per year","type":"number","unit":"t","decimals":3,"description":"Yearly emissions in metric tonnes."},{"name":"electricity_kwh_per_year","label":"Electricity per year","type":"number","unit":"kWh","decimals":0,"description":"Annualised consumption."},{"name":"tree_years_equivalent","label":"Mature-tree years","type":"number","unit":"trees","decimals":1,"description":"Number of mature trees needed for one year to absorb the yearly CO₂, at 21.8 kg (48 lb) per tree per year."}],"input_schema":{"type":"object","properties":{"electricity_kwh":{"description":"Kilowatt-hours consumed in the chosen period.","type":"number","minimum":0,"maximum":1000000000,"examples":[300]},"period":{"description":"Whether electricity_kwh is a monthly or yearly amount.","type":"string","enum":["month","year"],"default":"month","examples":["month"]},"region":{"description":"Grid whose average emission factor is applied.","type":"string","enum":["world","us","australia","eu","china","india","custom"],"default":"world","examples":["world"]},"custom_factor_kg_per_kwh":{"description":"Your own grid or supplier factor; used only when region=custom. Unit: kg CO₂/kWh.","type":"number","minimum":0,"maximum":2,"examples":[0.2],"x-unit":"kg CO₂/kWh"}},"additionalProperties":false,"required":["electricity_kwh"]},"output_schema":{"type":"object","properties":{"emission_factor_kg_per_kwh":{"description":"Factor applied. Unit: kg CO₂/kWh.","type":"number","x-unit":"kg CO₂/kWh"},"region_description":{"description":"Region, source and data year of the factor.","type":"string"},"co2_kg_per_month":{"description":"Monthly emissions (yearly ÷ 12 when a yearly amount was given). Unit: kg.","type":"number","x-unit":"kg"},"co2_kg_per_year":{"description":"Yearly emissions (monthly × 12 when a monthly amount was given). Unit: kg.","type":"number","x-unit":"kg"},"co2_tonnes_per_year":{"description":"Yearly emissions in metric tonnes. Unit: t.","type":"number","x-unit":"t"},"electricity_kwh_per_year":{"description":"Annualised consumption. Unit: kWh.","type":"number","x-unit":"kWh"},"tree_years_equivalent":{"description":"Number of mature trees needed for one year to absorb the yearly CO₂, at 21.8 kg (48 lb) per tree per year. Unit: trees.","type":"number","x-unit":"trees"}}},"formula":"CO₂_kg = kWh × factor; yearly = monthly × 12; tree_years = CO₂_kg_per_year / 21.77 (48 lb per mature tree per year)","method":"Average grid factors as of 2024 (kg CO₂/kWh): world 0.49 (IEA Emissions Factors 2024), United States 0.37 (EPA eGRID 2022, 823.1 lb/MWh), Australia 0.65 (DCCEEW NGA 2024), EU 0.25 (EEA, 2022), China 0.58 (MEE 2022), India 0.71 (CEA 2022–23). Location-based scope 2 factors at the point of use excluding transmission losses; marginal factors and specific suppliers differ.","sources":[{"name":"IEA – Emissions Factors 2024 (CO₂ per kWh of electricity by country)","url":"https://www.iea.org/data-and-statistics/data-product/emissions-factors-2024","type":"government","retrieved_at":"2026-09-24"},{"name":"US EPA – Greenhouse Gas Equivalencies Calculator: calculations and references (eGRID 2022 US average 823.1 lb CO₂/MWh; vehicle CO₂/GHG ratio 0.994)","url":"https://www.epa.gov/energy/greenhouse-gases-equivalencies-calculator-calculations-and-references","type":"government","retrieved_at":"2026-09-24"},{"name":"Australian DCCEEW – National Greenhouse Accounts Factors 2024 (scope 2 electricity factors)","url":"https://www.dcceew.gov.au/climate-change/publications/national-greenhouse-accounts-factors-2024","type":"government","retrieved_at":"2026-09-24"}],"freshness":{"type":"static","max_age_seconds":null,"note":"Deterministic formula with fixed constants; results never go stale. Inputs supplied by the caller determine the output."},"examples":[{"name":"300 kWh/month, world average","inputs":{"electricity_kwh":300,"period":"month","region":"world"},"expected":{"emission_factor_kg_per_kwh":0.49,"co2_kg_per_month":147,"co2_kg_per_year":1764,"co2_tonnes_per_year":1.764,"electricity_kwh_per_year":3600,"tree_years_equivalent":81},"url":"https://tttkmbb.com/api/v1/calculate/carbon-footprint-electricity?electricity_kwh=300&period=month&region=world"},{"name":"7000 kWh/year, Australia","inputs":{"electricity_kwh":7000,"period":"year","region":"australia"},"expected":{"emission_factor_kg_per_kwh":0.65,"co2_kg_per_year":4550,"co2_kg_per_month":379.2,"tree_years_equivalent":209},"url":"https://tttkmbb.com/api/v1/calculate/carbon-footprint-electricity?electricity_kwh=7000&period=year&region=australia"}],"faq":[{"q":"Why do published factors for my country differ?","a":"Factors change yearly with the generation mix, and reports differ between location-based averages, market-based supplier factors and marginal factors; enter your supplier's value as a custom factor for precise reporting."},{"q":"How is the tree equivalent derived?","a":"From the Arbor Day Foundation figure of about 48 lb (21.8 kg) of CO₂ absorbed per mature tree per year; the EPA uses a much lower 6 kg/year for a growing urban seedling, so treat it as an illustration."},{"q":"Does the factor include transmission losses?","a":"No. Grid losses of 5–10 % raise the emissions attributable to consumption by the same fraction."}],"tags":["electricity carbon footprint","co2 per kwh","grid emission factor","electricity emissions","tree equivalent co2"],"related":[{"calculator_id":"carbon-footprint-driving","reason":"Emissions of car travel for comparison."},{"calculator_id":"electricity-cost","reason":"Cost of the same electricity use."},{"calculator_id":"solar-panel-output","reason":"Estimate solar generation that could offset the consumption."}],"links":{"html":"https://tttkmbb.com/weather/carbon-footprint-electricity","markdown":"https://tttkmbb.com/weather/carbon-footprint-electricity.md","json":"https://tttkmbb.com/weather/carbon-footprint-electricity.json","api":"https://tttkmbb.com/api/v1/calculate/carbon-footprint-electricity","schema":"https://tttkmbb.com/api/v1/calculators/carbon-footprint-electricity","openapi":"https://tttkmbb.com/openapi.json","mcp":"https://tttkmbb.com/mcp"},"version":"v1","updated_at":"2026-09-24"},"timestamp":"2026-09-24T01:54:12Z"}