|This project looked at designing a supply chain solution to improve the energy efficiency of the vast majority of the 26 million UK homes which will still be in use by 2050.It looked to identify ways in which the refurbishment and retrofitting of existing residential properties can be accelerated by industrialising the processes of design, supply and implementation, while stimulating demand from householders by exploiting additional opportunities that come with extensive building refurbishment.The project developed a top-to-bottom process, using a method of analysing the most cost-effective package of measures suitable for a particular property, through to how these will be installed with the minimum disruption to the householder. This includes identifying the skills required of the people on the ground as well as the optimum material distribution networks to supply them with exactly what is required and when.
This deliverable is number 4a of 7 in Work Package 3. It builds on prior work in deliverables 3.3a (Technical Solutions Matrix) and 3.3b (Whole House Solutions) and critically assesses the challenges and opportunities associated with implementing these solutions across England, Scotland, Wales and Northern Ireland. This assessment takes into account the differences in housing stock and the differing constraints applicable in each country. The goal of the deliverable is to analyse the success of the solutions proposed and identify any gaps which need to be addressed when developing the single dwelling implementation plan, deliverable 3.4b.
The overall objective is to analyse the success of the solutions and identify any gaps which need to be addressed when formulating the single dwelling implementation plan. More detailed aims of the reportinclude:
In order to cover the wide range of house types across the UK, three predominant house types from each country were considered. In order to test the solutions, we came up with simplified packages to test against these house types for each country.
- To cover a sufficient range of house types to gain a good picture of the issues involved with implementing a mass retrofit programme
- To take the whole house solutions in WP3.3 and examine them with regards to buildability, cost, carbon effectiveness and customer acceptance
- To test out whole house solutions proposals on the most frequently occurring house types across the UK, focusing on the variations in construction and housing typology in England, Scotland, Northern Ireland and Wales
The TE model developed for the ETI was used in conjunction with these chosen house types and the energy efficiency measures outlined in WP3.3. Measures were grouped into work packages A, B and C, according to the level of associated disruption, which can be implemented both within isolation and in conjunction with each other. These outputs have provided a strong idea of the associated costs, fuel and energy savings and reductions in CO2 emissions. The diversity of construction typologies has resulted in different combinations of work packages in order to achieve the optimum balance of cost and CO2 reductions.