Impact | Community carbon calculator

Impact, the parish-level carbon emission estimator, gives parishes and small communities usable data on their carbon emissions that is easy to interpret and easy to share.

[Developed with major contribution from University of Exeter’s Centre for Energy & the Environment.]

It tells you how people in the parish travel and heat their homes, and other activities in the area that contribute to the local carbon emissions total.

Impact identifies the main ‘carbon impact areas’ in the parish or town – those places where focused community-based action can make the biggest contribution to cutting local emissions.

This tool was developed by the Centre for Sustainable Energy as part of their Climate Emergency Support Programme, working jointly with the University of Exeter’s Centre for Energy & the Environment as part of their South West Environment and Climate Action Network.

It was built in response to a demand from smaller settlements like parishes, town or city neighbourhoods to have robust and accurate data on their carbon footprint, so that they can best direct their efforts to tackle the climate emergency.

We have assumed that most parishes and small communities don’t want to analyse detailed data sets but would rather have the information graphically displayed. However, if you do want to access the raw data, this is available on our Downloads page.

Impact meets all national data protection regulations. No personal or individual household information is contained in any of the data used.

The tool was funded by CSE, the Department for Business, Energy & Industrial Strategy and the UKRI Strategic Priorities Fund.

At this time, the default geography for the tool is the Civil Parish. This means that you need to find your community by searching for the name of the parish or town council that serves your area (if you don’t know the name of your parish, you can find it by using the Ordnance Survey Electoral Boundaries map).

Once you enter your parish name, the tool will display the carbon footprint for your community.

You can view your community’s carbon footprint in two ways. ‘Territorial’ emissions only show the emissions that are directly produced from your parish (from heating buildings, transport, any industry or agricultural operations within your boundary, for example). This follows the same methodology as national emissions data sets, but many people find this a frustrating approach at the very local level as it largely ignores what we buy and what we eat (where that is imported from other parts of the UK or the world).

So you can also select to see your emissions displayed on a ‘Consumption’ basis. This will most likely give a slightly higher footprint in most cases, but includes our best estimate of these additional emissions. The differences between the two approaches are explained in detail in our Methodology document, which you can download here, and you can see a more detailed exploration of the differences between the two approaches on the Using the Tool page

You can use the ‘Compare’ page to see how your area’s footprint compares to other parishes in your area, your district council’s average, and the national average.

During 2021, we will be working on improving and extending the tool, so any ideas you have for additional features should be emailed to

We already have a set of features that we want to build next, so visit our ‘Support Us/Donate’ page to see more details about those, and contact us if what you want is not already on the list.

To learn more about the tool, what the footprints show you, how to use it, and for resources on what to do next, visit the Using the Tool page.

GET STARTED to find what is driving your community’s carbon footprint. You can also compare it with other local communities and with the average for East Devon.