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The Scottish Government does not hold this information. The Office for National Statistics, Broad Industry Group Region by broad industry group (Standard Industrial Classification) – Business Register and Employment Survey (BRES): Table 4 - Office for National Statistics (ons.gov.uk) , provides annual data for employee and employment estimates working in construction areas in Scotland including, but not limited to; plumbing, installation of heating and air-conditioning systems, electrical work and insulation work (water, heat, sound). The most recent data was published on 25 October 2023.

The recent ClimateXChange Report shows potential for businesses in the sector, the proposed Heat in Buildings Bill will underpin increasing demand in sector giving more confidence to businesses to invest which will be supported by other action such as that set out in Supply Chain Delivery Plan.

A Business and Regulatory Impact Assessment was completed for the provisions contained within The Building (Scotland) Amendment Regulations 2023 (which introduce the New Build Heat Standard from 1 April 2024). This contains an assessment of how the Standard may impact costs associated with new homes across Scotland.

Supporting documents - New Build Heat Standard 2024: business and regulatory impact assessment - gov.scot (www.gov.scot)

The scenarios were developed to understand the potential workforce requirements in Scotland to meet projected clean heat and energy efficiency targets. These were indicative forecast scenarios and are not expectations/projections of future demand and for this reason are not currently tracked.

The Scottish Government collects data on double glazing and draught proofing of loft hatches within occupied homes through the annual Scottish House Condition Survey.

This proposal is contained within the current public consultation Delivering net zero for Scotland's buildings - Heat in Buildings Bill: consultation - gov.scot (www.gov.scot) . A draft business and regulatory impact assessment has been published to support this consultation Heat in Buildings Bill consultation: business and regulatory impact assessment (partial) - gov.scot (www.gov.scot) .

This draft impact assessment and a range of other relevant impact assessments will be developed and then finalised based on the outcome of the consultation. Further development of proposals will then occur and will be the subject of detailed final impact assessments.

Information on public sector support available to businesses in Scotland can be found on FindBusinessSupport.gov.scot.

The report was commissioned by Scottish Enterprise as internal analysis to inform policy development. As such, this will not be published externally.

The Heat Networks (Scotland) Act, 2021 requires a review report to be laid before parliament 24 months after the publication of the Heat Networks Delivery Plan. The Delivery Plan was published on 31 March 2022 and the review report is due by 31 March 2024. The review report will provide an update on the development of district heating networks across Scotland.

Information on heat networks projects that have or are receiving support from the Scottish Government can be found in the Heat Network Quarterly Report, which provides summaries of the projects funded through Scotland’s Heat Network Fund, Scotland’s Heat in Buildings Development Funding Invitation and the Heat Network Support Unit. Support for heat networks has also been provided through the Low Carbon Infrastructure Transition Programme, with its quarterly report providing an updated construction status for its funded projects. These reports can be found at: https://www.gov.scot/collections/heat-network-project-reports/ and https://www.gov.scot/collections/low-carbon-infrastructure-transition-programme-reports/ respectively.

Our Heat in Buildings Supply Chains Delivery Plan sets out practical steps that we will take to support the growth of the green heat sector. We continue to work in partnership with the sector to ensure that the appropriate support and training provision are aligned at a local level with business needs and future local demands.