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This page contains a simple carbon calculator for use by UK organisations based upon the July recommended conversion factors provided by Defra as part of its Environmental Reporting Guidelines. If you want to use older data eg.
This is a free simple calculator designed to enable estimated carbon footprints to be calculated by most UK organisations. If you need a more sophisticated service, or help in setting the boundary or scope of your calculation, we can also offer more comprehensive help and support on a paid-for basis, as described on our Carbon Footprinting Services page. Help and Advice We may be able to offer limited help and advice, without charge, if you send an e-mail to calculators nef.
We can also offer more comprehensive help and support on a paid-for basis, as described on our Carbon Footprinting Services page. They still exclude emissions associated with the production of fuels, such as oil refining or fuel distribution, so are not suitable for well to tank WTT or Scope 3 reporting. This table offers a number of factors for converting electricity to its carbon dioxide equivalent.
The default How To Calculate Carbon Hookup Formula is recommended unless you have a good reason to use another factor: Previously this was based on a 5 year rolling average, to smooth out year on year changes caused by factors such as the operating performance of nuclear power stations and the latest developments in wind energy.
Fromthe prior year figure has been used, as it is a better indicator http://simplegirls.date/k/what-to-do-when-your-daughter-is-hookup-a-bad-boy.php the current generating mix. For we have added one that includes transmission and distribution losses for the UK onlywhich is the combined total of GHG Protocol Scope 2 and Scope 3 emissions.
For electricity generated from renewable sourceszero carbon dioxide emissions may be used if the supply has been generated onsite. It was formerly acceptable to use zero for electricity bought on a certified green tariffbut in Defra decided that green tariffs should be reported using the same factor as for average grid electricity. Although we allow a zero factor for onsite renewables generated, this should only be used if REGOs are not traded. However for the reverse calculation back to energy, we have omitted renewables from the kWh totals.
If you use onsite CHP, you will need to use a more sophisticated tool.
NEF | - Simple Carbon Calculator
For other countries, the electricity component would need to be adjusted based upon primary fuel mix. UntilDefra published a table of factors for 56 countries - only a few key countries where Britons have holiday homes or major manufacturing centres are included above.
As these factors can change significantly from year to year based on estimation methods, we only read more them to 3 significant figures, not 5. Inthe IEA started charging for data previously made available freely, and as this is only a basic, free tool, from we have started using our own estimates of international factors which may differ from IEA ones.
Around half UK CO 2 emissions come from industry and commerce, including the use of transport to deliver goods. This calculator should help smaller companies identify their carbon footprint, based on available records of energy used. Larger organisations, which have already taken steps to reduce energy use and their carbon footprint, are advised to find out more about the Carbon Trust Standardwhich uses a more sophisticated carbon calculation.
Although this calculator was designed for use by small offices, it can easily be used to produce a figure for household emissions. These are based How To Calculate Carbon Hookup Formula a rolling 5 year average from and are slightly lower than the regulator Ofgem estimates, but may reflect the trend towards much higher efficiency boilers since it became compulsory to install only condensing models. This equates to 4. This typical value also excludes the distorting effect of a few very large or badly insulated homes, which increase the average mean value.
If we take mean figures, and adjust for homes heated by oil, coal or biomass, the average domestic consumption rises to around 21,kWh in total, producing around 4.
On either measure they are quite a bit lower than our earlier estimates of around 4. Although we won't go into per capita emission estimates here, these have also fallen in recent years, in part due to the tendency for car mileage to have plateaued, for cars to become more fuel click even as petrol has substantially been replaced by diesel.
The one area that continues to rise relates to international air travel.
Note that distances are per passenger mile - some tickets quote distances in km. We have used a network rail average, though commuter trains may have lower emissions. What is the methodology for adding any contaminants of fixed concentration ppm, ppm to fixed amount of soil for leaching studies?
All data in this CO 2 calculator is based upon the official guidelines from the How To Calculate Carbon Hookup Formula of Environment, Food and Rural Affairs, originally published inwith data updated at June Emissions for other fuels can be found on Defra's Environmental Reporting page. This table only gives our selection of the most useful conversion factors, and CO 2 equivalents are given on a Gross Calorific Value basis: Defra may eventually move to a net CV basis which will slightly increase emission factors from natural gas and LPG.
Transport emissions are very hard to estimate as they vary with factors such as passenger numbers, driving style, congestion and the type of car, bus, train or aeroplane used, and whether freight is also being carried.
We can use our our general model for exponential decay to calculate the calculate carbon of carbon at any given time interracial dating sites the equation. Decay of radioactive isotopes Radioactive isotopes, such as 14 C, decay exponentially. Taxi emissions are based on average passenger-km emissions in a typical black cab so make an allowance for sharing. Can anyone explain to me the meaning of ecological function? Thus, our equation for modeling the decay of 14 C is given by.
The average car mileage figure when size and fuel are unknown is equivalent to an average UK family car returning 36mpg. This is more fuel efficient than earlier factors, reflecting the better fuel economy of the UK fleet as a whole. We have from onwards added additional types, sizes and fuels to enable a better estimate of emissions. If your car fleet returns better figures on average, or you drive a smaller car achieving say 45mpg, or regularly share a car then you could adjust the mileage accordingly to estimate CO 2 emissions.
Petrol and diesel emissions are based on UK retail blends, which How To Calculate Carbon Hookup Formula include a small proportion of biofuels. The average diesel car has only slightly lower emissions due to it typically being significantly larger. In line with official recommendations, from we have added average factors for plug-in hybrids and fully electric vehicles.
Taxi emissions are based on average passenger-km emissions in a typical black cab so make an allowance for sharing. Aeroplane emissions are very hard to estimate. Figures include an estimate of radiative forcing from other aircraft emissions in the upper atmosphere, such as ozone created from NOx or condensation trails, and not just the CO 2 emitted on the journey.
Rail and local bus emissions vary greatly depending on time of day how busy the bus or train isand location - lightly used rural buses inevitably report higher emissions than ones in central London.
We have used a network rail average, just click for source commuter trains may have lower emissions. From we have added Eurostar as a lower-carbon see more to flying, though our kWh estimate is a bit flaky.
One reason its emissions are low is that it is quite largely powered by French nuclear electricity. Coaches long distance bus are generally calculated to have emissions even lower than rail, but are included with trains. If you are still uncertain about your footprint, or would like to get a more accurate estimate, including How To Calculate Carbon Hookup Formula on how to manage your footprint, then we can also offer more comprehensive help and support on a paid-for basis, as described on our Carbon Footprinting Services page.
Improving the Use of Energy in Buildings. Simple Carbon Calculator Now includes data This page contains a simple carbon calculator for use by UK organisations based upon the July recommended conversion factors provided by Defra as part of its Environmental Reporting Guidelines.
Calculate your footprint This is a free simple calculator designed to enable estimated carbon footprints to be calculated by most UK organisations. First select the best description of the electricity source from the drop down below.
Note that although UK emissions are in kgCO 2 e, for other countries they are only in kgCO 2not taking into account any associated emissions of methane or nitrous oxide and use data. And if you want to calculate emissions from road transport using miles, use the third list to select type, size and fuel of vehicle used. There are separate factors in the main table for trains, buses and aeroplanes. For flights, there's a list by class and general distance How To Calculate Carbon Hookup Formula short haul would typically be within Europe or North America and long haul intercontinental.
Note that distances are per passenger mile - some tickets quote distances in km. Main source of electricity:. This calculator allows two types of car to be entered in the mileage box. If the electricity used for charging an EV or PHEV is included in the metered figure, then exclude the relevant mileage from the distance travelled.
Average default flight Domestic Short haul, business Short haul, economy Long haul, first class Long haul, business Long haul, premium economy Long haul, economy. Floor Area m 2. Energy per m 2.
Energy per Employee kWh.