Research and analysis

Demonstration of Energy Efficiency Potential (DEEP)

A research project to demonstrate the energy saving potential and risk from taking a whole-house approach to retrofit.

• From: Department for Energy Security and Net Zero and Department for Business, Energy & Industrial Strategy
• Published: 6 September 2019
• Last updated: 22 October 2024 — See all updates

Documents

Demonstration of Energy Efficiency Potential (DEEP) report 1: Synthesis

PDF, 4.88 MB, 76 pages

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Demonstration of Energy Efficiency Potential (DEEP) report 2: Case studies summary

PDF, 2.66 MB, 49 pages

Demonstration of Energy Efficiency Potential (DEEP) report 2.01: Case study methods

PDF, 865 KB, 39 pages

Demonstration of Energy Efficiency Potential report 2.02: DEEP house case study 17BG

PDF, 5.68 MB, 101 pages

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Demonstration of Energy Efficiency Potential report 2.03: DEEP house case study 56TR

PDF, 7.04 MB, 104 pages

Demonstration of Energy Efficiency Potential report 2.04: DEEP house case study 01BA

PDF, 5.88 MB, 87 pages

Demonstration of Energy Efficiency Potential report 2.05: DEEP case study 55AD and 57AD

PDF, 9.55 MB, 125 pages

Demonstration of Energy Efficiency Potential report 2.06: DEEP house case study 00CS

PDF, 6.5 MB, 68 pages

Demonstration of Energy Efficiency Potential report 2.07: DEEP house case study 04KG

PDF, 4.7 MB, 80 pages

Demonstration of Energy Efficiency Potential report 2.08: DEEP case study 52NP and 54NP

PDF, 6.84 MB, 81 pages

Demonstration of Energy Efficiency Potential report 2.09: DEEP house case study 27BG

PDF, 3.12 MB, 64 pages

Demonstration of Energy Efficiency Potential report 2.10: DEEP house case study 08OL

PDF, 1.86 MB, 66 pages

Demonstration of Energy Efficiency Potential report 2.11: DEEP case study 07LT and 09LT

PDF, 7.69 MB, 96 pages

Demonstration of Energy Efficiency Potential report 2.12: DEEP house case study 19BA

PDF, 3.43 MB, 80 pages

Demonstration of Energy Efficiency Potential (DEEP) report 3: Energy efficiency surveys

PDF, 1.5 MB, 52 pages

Demonstration of Energy Efficiency Potential (DEEP) report 4: Building material properties

PDF, 656 KB, 29 pages

Demonstration of Energy Efficiency Potential (DEEP) report 5.01: Salford energy house, fabric performance testing

PDF, 2.34 MB, 82 pages

Demonstration of Energy Efficiency Potential (DEEP) report 5.02: Salford energy house, heating systems testing

PDF, 3.87 MB, 59 pages

Demonstration of Energy Efficiency Potential (DEEP) report 6.01: Improved weather files for building simulation

PDF, 9.06 MB, 77 pages

Demonstration of Energy Efficiency Potential (DEEP) report 6.02: Occupant stereotypes for building simulation

PDF, 3.61 MB, 38 pages

Demonstration of Energy Efficiency Potential (DEEP) report 6.03: Moisture risk from internal wall insulation (IWI)

PDF, 3.75 MB, 42 pages

Demonstration of Energy Efficiency Potential (DEEP) report 6.04: Overheating risk from domestic retrofit

PDF, 3.76 MB, 61 pages

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Demonstration of Energy Efficiency Potential (DEEP): literature review (published March 2021)

Ref: BEIS Research Paper Number 2021/014

PDF, 2.38 MB, 83 pages

Demonstration of Energy Efficiency Potential (DEEP): Invitation to tender (published September 2019)

PDF, 663 KB, 63 pages

Details

The aim of the DEEP project was to investigate taking a system-level approach to retrofit, considering the entire dwelling rather than the performance of individual measures. Typically defined as a ‘whole-house’ approach, this appreciates the complex interactions between fabric, ventilation and the occupant.

The literature review summarises the existing knowledge in this field and provides the evidence to justify the research strategy adopted in fulfilling the objectives of the project.

The results from field trials, laboratory testing, and extensive modelling investigations have produced a series of complementary findings that paint a picture of performance and risk for piecemeal and whole house approaches to retrofitting solid walled homes.

Published 6 September 2019
Last updated 22 October 2024 + show all updates

1. 22 October 2024

   Added Demonstration of Energy Efficiency Potential (DEEP) reports 1 to 6.

2. 12 March 2021

   Added literature review of the DEEP project.

3. 6 September 2019

   First published.