Support better LCSF applications and develop detailed feasibility studies for investible decarbonisation measures – such as low carbon heating

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Feasibility and Design

Who is the Theme 2 guidance for?

These guides and tools support public sector bodies and their decarbonisation partners. They help delivery-level, strategic and technical teams to:

  • Develop better funding applications faster, eg. Low Carbon Skills Fund applications
  • Appraise technical options and know what to ask for
  • Prioritise projects for the delivery of your decarbonisation strategy across public sector buildings and estates
  • Develop a feasibility study for one or a suite of investible decarbonisation measures
  • Secure budgets and determine project timescales.

Skip to tools and guides

Theme 2 of the Public Sector Decarbonisation Guidance has been developed in collaboration with the Department for Energy Security and Net Zero (DESNZ) and the Cabinet Office. Our Feasibility and Design guide is also recommended via the Salix website.

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VIDEO: Design the projects for your decarbonisation strategy

Main Guide - Feasibility and Design

As part of your strategy development, you should have a clear picture of your estate, emissions and the prioritised projects you wish to take forward. This guide covers undertaking feasibility and design studies, including information on the different types of studies and how to ensure they support your funding applications and ultimately reduce CO2 emissions.

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Feasibility and Design: Extra Guides

Discover seven available guides

AVAILABLE NOW

  • Understanding six activities that make up feasibility and design
  • Local Distribution Network Operator (DNO) capacity guidance
  • Decarbonisation Pathway Report
  • Site survey and building audits guide
  • Site energy demand estimator guide
  • How to treat technologies and what to ask for
  • Heat Pumps; which one is right for your site and what else to consider alongside
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Understanding six activities that make up feasibility and design

This guide expands on the main theme 2 guide, providing more information on six activities you might undertake as part of your work on feasibility and design. The guide covers what the 6 activities are, how to differentiate and choose between them, and how they fit in with the Royal Institute of British Architects’ (RIBA) plan of work.

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Local Distribution Network Operator (DNO) capacity guidance

A guide on how to establish, at a high level, what the local Distribution Network Operator (DNO) electricity capacity is for a site.

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Decarbonisation Pathway Report

An example of the output of decarbonisation planning activity, providing a carbon reduction pathway for a site using visual and quantitative information to enable decarbonisation planning and detailed design activity, allowing carbon neutrality by 2050.

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Site survey and building audits guide

This guide provides a description of how to carry out a site survey along with a helpful checklist.

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Site energy demand estimator guide

This document is the user guide for the ‘site energy demand estimator’.

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How to treat technologies and what to ask for

This guidance covers the common technologies you might be considering as part of your decarbonisation programme, for example building fabric upgrades, heat pumps or energy storage. This guide provides information on how you might go about assessing their potential on your site.

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Heat pumps; which one is right for your site and what else to consider alongside

This guide covers the types of heat pumps suitable for non-domestic applications, feasibility considerations and complementary technologies to improve system efficiencies. Examples of alternative electric heating solutions are also provided.

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Feasibility and Design: Tools and Tutorials

Discover seven available tools and accompanying tutorials

AVAILABLE NOW

  • Site information gathering template
  • Half-hourly energy consumption benchmarks
  • BMS intervention estimator
  • Building fabric intervention estimator
  • Lighting intervention estimator
  • Site energy demand estimator
  • Standard scope of works for Feasibility and Design studies
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Standard scope of works for Feasibility and Design studies

This tool will help you produce first draft specifications for feasibility and design studies.

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Site information gathering template

This template helps you to collate relevant site data as part of information gathering. It contains all the useful information that could be gathered, with colour coding to help you easily differentiate between must-have information, should-have information and non-essential information.

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Half-hourly energy consumption benchmarks

These half-hourly benchmarks have been created for different building use types on campus-style sites. The benchmarks have been produced as part of a consistent approach to assessing decarbonisation for scaled delivery. They are a standard set that can be used to split aggregated site energy consumption into a building-by-building profile for representative days of the year. Data to inform the benchmarks has been made available to Energy Systems Catapult through its work with various public sector departments.

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BMS intervention estimator

This tool provides an estimation of costs and energy efficiency benefits when you upgrade or install a new building management system (BMS) on a campus-style site or at an organisational portfolio level. Using this estimator will provide a repository of site information represented in a consistent format.

Last update: 12/03/24

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Building fabric intervention estimator

This estimator is designed to support the assessment of site building fabric and give an understanding of relevant energy consumption on either a campus-style site or at an organisational portfolio level. Using this estimator also provides a repository of site information represented in a consistent format.

Last update: 12/03/24

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Lighting intervention estimator

This estimator is designed to provide an estimation of costs and energy efficiency benefits of upgrading existing lighting to light-emitting diode (LED) lighting on a campus style site or at an organisational portfolio level. Using this estimator also provides a repository of site information represented in a consistent format.

Last update: 12/03/24

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Site energy demand estimator

This estimator provides a breakdown of site energy demand, disaggregated at the building level by fuel source (Electricity, Gas, Biomass and Heat Network), based on aggregated site information and a series of benchmarked building types against which this is scaled. Using this estimator provides site energy demand information in a consistent format.

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