Pliosaur Energy - calculator

Technical

The calculator uses the full list of emissions factors that are provided by BEIS, UK governments department for Business, energy and industrial strategy (BEIS). For more information about the BEIS emission factor methodology and access to the full list of emission factors, use the ’About’ and ’BEIS’ buttons at the bottom RHS of the emission data entry form. Over 7,000 BEIS emission factors, the full list, is made available through a simple user interface that helps with the selection of the appropriate emission type. BEIS update this list on an annual basis. We will update the calculator to include these changes on an annual basis. For the user who wishes to remain up to date and retrospectively accurate they can download a new calculator each year and keep their records within each year’s calculator.

The UK government introduced the Streamlined Energy and Carbon Reporting (SECR) requirement for businesses in scope to report their energy consumption data. The calculator determines the energy consumption for each emission record if a SECR factor was issued in the BEIS 2020 full list.

Given the direct use of the full list of BEIS emission factors, the transparency of the data calculation process, and our approach to data storage we believe that our calculator easily meets the expectations of the HMRC. As the number of calculator users increases we will also seek independent assurance of its capabilities and our software development processes.

Each emission record is calculated by first determining the various emission components. For each of these, the calculator then uses the BEIS emission factors for carbon dioxide (CO2), nitrous oxide (N2O), methane (CH4) and the equivalent carbon dioxide (eCO2) to determine the overall emission.

The Vincenty inverse formula for ellipsoids is used to calculate the distance between airports using its latitude, longitude and elevation. To correct for the oblique spheroidal shape of the earth it uses the World Geodetic System (WGS-84) correction factors. With over 55,000 global airports to choose from, this makes the flight distance calculator a very comprehensive and capable tool. To find an airport it is possible to use the airport name, GPS code, IATA or local code to pre-filter the dropdown list from which the required airport can be selected.

We recognise that making emission calculations can be complex, so we’ve made the user interface as simple as possible and integrated an extensive help facility to support users as they learn how to use the software. Start as a complete novice and then when you are an expert you can turn off the help, if necessary. Each help item is selected by clicking a ’?’ symbol and these are located next to the input features of the user interface. With this approach we hope to optimise your learning outcomes.

User feedback is encouraged to optimise the calculator software and especially the help facility. If you have any great suggestions, please let us know!