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The NHS Emission Quantification Recipe Book

GitHub Release

About • Contents • Get Involved • License • Change Log

About

The NHS Emission Quantification Recipe Book is a transparent, collaborative and evidence-based approach to establishing a standardised means of calculating emissions associated with NHS Carbon Footprint and Carbon Footprint Plus themes set out by the Greener NHS in October 2020 (Figure 1). The NHS Emissions Quantification Recipe Book has been developed by Dr Dan Wright of the Sustainability Team at Kent Community Health NHS Foundation Trust in collaboration with members of the NHS Kent & Medway Integrated Care System.

Key to the methodologies specified is the recognition that NHS organisations are at different stages in their emissions quantification journey. To support this journey and provide an innovative means to report in a methodologically-transparent way, each theme provides three options for calculation:

  • A Reduced Calculation (RC) is intended to be an approach to calculating a ballpark figure emission impact using data that should be easily accessible by someone stepping into an emissions reporting role.
  • A Standard Calculation (SC) is intended to feature the minimum data that NHS organisations should be working towards sourcing and handling, for example, periodical energy consumption data.
  • An Optimal Calculation (OC) is intended to feature 'best in class' approaches to calculating accurate emissions, this may include using advanced tooling or higher resolution data, for example, half-hourly energy consumption data.

By being transparent around which methodological approach has been used, either RC, SC or OC, this supports 'comparing apples to apples' both within and between Integrated Care Systems. To demonstrate, here is a worked example for an RC approach to calculating emissions from natural gas use:

Stu sources the Display Energy Certification (DEC) for the building they are interested in using the energy certificate repository. Using information from the Building Energy Use figure, Stu multiplies the annual energy use of other fuels (328) by the total useful floor area for the building (2778.54). The calculated annual total consumption (911,361.12) is presented in kWh.

By using the BEIS Conversion Factors dataset for the year they are interested in (2019), Stu is able to source a value for emissions per kWh of natural gas use assuming gross calorific value (0.18385kgCO2e/kWh). Stu wants to report in tonnes, therefore divides the sum by 1,000 and then rounds to two decimal places. Along with adding their units (tCO2e), Stu adds the [RC] tag to support transparency around how this figure was calculated. The final value added to Stu’s report on emissions associated with natural gas consumption is 167.55tCO2e [RC].

Equation 1.4 An example of an RC approach to calculating emissions associated with natural gas consumption.

$$ \frac{\left( 328 \times 2778.54 \right) \times 0.18385} {1000} = 167.55\text{tCO}_2\text{e} \text{ [RC]} $$

Greener NHS Net Zero Scopes

Fig 1. A summary of the themes considered to be within scope for reduction to zero by 2040 (NHS Carbon Footprint) and 2045 (NHS Carbon Footprint Plus) published by the Greener NHS.

Contents

NHS Carbon Footprint

NHS Carbon Footprint Plus

Get involved

The NHS Emission Quantification Recipe Book has been designed to be a resilient and community-led endeavour that can be easily updated and kept relevant. The GitHub platform is an ideal way to facilitate this functionality. In the video below, Dr Dan Wright provides a quick overview of how you can get involved with the ongoing development of the NHS Emission Quantification Recipe Book through the GitHub forking, pull and commenting functions.

221101_RecipeBook_50per.mp4

Emailware

The NHS Emission Quantification Recipe Book is emailware. Meaning, if you liked using this tool or it has helped you in any way, please send us an email at [email protected] with any feedback. We really appreciate it!

Acknowledgements

Authors and CRediT statement

Dan Wright1: Conceptualisation, Methodology, Validation, Formal Analysis, Investigation, Writing - Original Draft, Writing - Reviewing and Editing, Visualisation, and Project Administration.

Guy Wing7: Methodology, Writing - Original Draft and Resources.

Vicky Cooper2 and Stu Meades3: Methodology and Resources.

James Bate4, Sirina Blankson2, Emma Clarke5, Paul Davis6, Julia Hart6, Emma Lee-Jarman1 and Alison Watson6: Methodology.

Finn Nightingale1: Project Administration.

  1. Kent Community Health NHS Foundation Trust
  2. Kent and Medway NHS and Social Care Mental Health Trust
  3. Greener Edge Ltd.
  4. Greener NHS
  5. Kent County Council
  6. NHS Kent and Medway
  7. Sharpsmart UK

Credits

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License

MIT

Change log

  • 04/01/2022 - The NHS Emission Quantification Recipe Book was shared with members of the Future NHS discussion forum.
  • 27/12/2022 - Updated to include authors in readme.md alongside a CRediT statement for transparency.
  • 04/11/2022 - The first externally-accesible release of the NHS Emission Quantification Recipe Book!

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kmsimg_nhs_emissionsrecipebook's Issues

NHS Fleet & Leased Vehicles: Document updates required

To do:

  • Set out an OC methodology for calculating emissions associated with NHS Fleet & Leased Vehicles.
  • Present a worked example for using an OC methodology for calculating emissions associated with NHS Fleet & Leased Vehicles.

Water: Document requires updates

To do:

  • Set out an OC methodology for calculating emissions associated with water use.
  • Present a worked example for using an RC methodology for calculating emissions associated with water use.
  • Present a worked example for using an SC methodology for calculating emissions associated with water use.
  • Present a worked example for using an OC methodology for calculating emissions associated with water use.

Fossil Fuels: Document updates required

To do:

  • Set out an RC methodology for calculating emissions associated with liquid fuels.
  • Present a worked example for using an RC methodology for calculating emissions associated with liquid fuels.
  • Set out an SC methodology for calculating emissions associated with liquid fuels.
  • Present a worked example for using an SC methodology for calculating emissions associated with liquid fuels.
  • Set out an OC methodology for calculating emissions associated with liquid fuels.
  • Present a worked example for using an OC methodology for calculating emissions associated with liquid fuels.
  • Set out a RC methodologies for calculating emssions associated with solid fuels.
  • Present a worked example for using an RC methodlogy for calculating emssions associated with solid fuels.
  • Set out a SC methodologies for calculating emssions associated with solid fuels.
  • Present a worked example for using an SC methodlogy for calculating emssions associated with solid fuels.
  • Set out a OC methodologies for calculating emssions associated with solid fuels.
  • Present a worked example for using an OC methodlogy for calculating emssions associated with solid fuels.

Waste: Document updates required

To do:

  • Set out an SC methodology for calculating emissions associated with waste management.
  • Present a worked example for using an SC methodology for calculating emissions associated with waste management.
  • Present a worked example for using an OC methodology for calculating emissions associated with waste management.
  • Present a worked example for using an SCmethodology for calculating emissions associated with waste management.

Anaesthetics: Document updates required

To do:

  • Set out an RC methodology for calculating emissions associated with use of bottled anaesthetic gas.
  • Present a worked example for using an RC methodology for calculating emissions associated with use of bottled anaesthetic gas.
  • Set out an OC methodology for calculating emissions associated with use of bottled anaesthetic gas.
  • Present a worked example for using an OC methodology for calculating emissions associated with use of bottled anaesthetic gas.

Business travel (public transport, greyfleet etc.): Document updates required

To do:

  • Set out an RC methodology for calculating emissions associated with greyfleet travel.
  • Present a worked example for using an RC methodology for calculating emissions associated with greyfleet travel.
  • Present a worked example for using an SC methodology for calculating emissions associated with greyfleet travel.
  • Present a worked example for using an OC methodology for calculating emissions associated with greyfleet travel.
  • Set out an RC methodology for calculating emissions associated with rail travel.
  • Set out an SC methodology for calculating emissions associated with rail travel.
  • Set out an OC methodology for calculating emissions associated with rail travel.
  • Present a worked example for using an RC methodology for calculating emissions associated with rail travel.
  • Present a worked example for using an SC methodology for calculating emissions associated with rail travel.
  • Present a worked example for using an OC methodology for calculating emissions associated with rail travel.
  • Set out an RC methodology for calculating emissions associated with taxi travel.
  • Set out an SC methodology for calculating emissions associated with taxi travel.
  • Set out an OC methodology for calculating emissions associated with taxi travel.
  • Present a worked example for using an RC methodology for calculating emissions associated with taxi travel.
  • Present a worked example for using an SC methodology for calculating emissions associated with taxi travel.
  • Present a worked example for using an OC methodology for calculating emissions associated with taxi travel.
  • Set out an RC methodology for calculating emissions associated with bus travel.
  • Set out an SC methodology for calculating emissions associated with bus travel.
  • Set out an OC methodology for calculating emissions associated with bus travel.
  • Present a worked example for using an RC methodology for calculating emissions associated with bus travel.
  • Present a worked example for using an SC methodology for calculating emissions associated with bus travel.
  • Present a worked example for using an OC methodology for calculating emissions associated with bus travel.
  • Set out an RC methodology for calculating emissions associated with air travel.
  • Set out an SC methodology for calculating emissions associated with air travel.
  • Set out an OC methodology for calculating emissions associated with air travel.
  • Present a worked example for using an RC methodology for calculating emissions associated with air travel.
  • Present a worked example for using an SC methodology for calculating emissions associated with air travel.
  • Present a worked example for using an OC methodology for calculating emissions associated with air travel.
  • Set out an RC methodology for calculating emissions associated with sea travel.
  • Set out an SC methodology for calculating emissions associated with sea travel.
  • Set out an OC methodology for calculating emissions associated with sea travel.
  • Present a worked example for using an RC methodology for calculating emissions associated with sea travel.
  • Present a worked example for using an SC methodology for calculating emissions associated with sea travel.
  • Present a worked example for using an OC methodology for calculating emissions associated with sea travel.

Energy (well-to-tank): Document updates required

To do:

  • Present a worked example for using an RC methodology for calculating emissions associated with the supply of natural gas (well-to-tank).
  • Present a worked example for using an SC methodology for calculating emissions associated with the supply of natural gas (well-to-tank).
  • Present a worked example for using an OC methodology for calculating emissions associated with the supply of natural gas (well-to-tank).
  • Present a worked example for using an RC methodology for calculating emissions associated with the transmission and distribution of electricity (well-to-tank).
  • Present a worked example for using an SC methodology for calculating emissions associated with the transmission and distribution of electricity (well-to-tank).
  • Present a worked example for using an OC methodology for calculating emissions associated with the transmission and distribution of electricity (well-to-tank).
  • Set out an OC methodology for calculating emissions associated with NHS Fleet and leased vehicles (well-to-tank).
  • Present a worked example for using an RC methodology for calculating emissions associated with NHS Fleet and leased vehicles (well-to-tank).
  • Present a worked example for using an SC methodology for calculating emissions associated with NHS Fleet and leased vehicles (well-to-tank).
  • Present a worked example for using an OC methodology for calculating emissions associated with NHS Fleet and leased vehicles (well-to-tank).
  • Set out an RC methodology for calculating emissions associated with business travel (well-to-tank).
  • Set out an SC methodology for calculating emissions associated with business travel (well-to-tank).
  • Set out an OC methodology for calculating emissions associated with business travel (well-to-tank).
  • Present a worked example for using an RC methodology for calculating emissions associated with business travel (well-to-tank).
  • Present a worked example for using an SC methodology for calculating emissions associated with business travel (well-to-tank).
  • Present a worked example for using an OC methodology for calculating emissions associated with business travel (well-to-tank).

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