Key Points Summary
We summarise the published Warm Homes Plan Technical annex. In one sentence the Technical annex shows that the Warm Homes Plan will drive large‑scale deployment of heat pumps, insulation, solar PV, heat networks and low‑carbon technologies, delivering major bill savings, supporting up to 180,000 jobs, and mobilising an unprecedented £15bn+ of public and private investment by 2030.
Key Points
1. Deployment Targets
- The plan’s modelling projects significant national deployment of insulation, low‑carbon heating (especially heat pumps), solar PV, and home batteries across all major housing tenures.
- By 2030, the heat pump market is expected to grow to more than 450,000 installations per year, including around 200,000 in new‑build homes complying with the Future Homes Standard
- Total homes upgraded (2024–2030) reflect combined delivery from schemes including BUS, WH:SHF, WH:LG, ECO, GBIS and new low‑income funding.
2. Solar PV Deployment
- The plan anticipates large growth in rooftop solar, driven by MEES requirements, new‑build regulations, Warm Homes schemes and market‑led demand.
- Up to 2030, modelling includes social and private rented sector upgrades, solar‑equipped new builds, and future low‑income funding routes.
3. Heat Networks Expansion
- The National Zoning Model is used to identify areas where heat networks are the lowest‑cost decarbonisation route.
- By 2050, heat networks are expected to supply ~20% of UK heat demand, with interim targets guiding growth in the 2020s and early 2030s.
4. Household Bill Savings
- Bill savings are estimated using the CODE (Cost Optimal Domestic Electrification) model and National Buildings Model scenarios.
- A typical household installing a heat pump + 4kW solar PV + 4kWh battery could save up to £550/year under current assumptions.
- Additional savings (up to £300/year) are possible with time‑of‑use tariffs and battery optimisation.
- Example archetypes show high variability—for instance, a PRS home upgraded under MEES might save £410/year, though policy averages are lower (£210/year).
5. Jobs Supported
- The Warm Homes Plan is expected to support around 180,000 direct and indirect jobs by 2030, though the technical annex notes this is not net job creation and the 2030 peak is influenced by MEES deadlines.
- Jobs include installers, supply‑chain operatives, manufacturing roles, and energy‑efficiency professionals.
6. Investment Levels
- Total estimated investment (public + private) from 2024 to 2030 aggregates spending across all schemes and new‑build requirements.
- The Plan includes £15 billion of public funding—the largest UK investment ever in home energy upgrades—plus substantial private capital (e.g., housing associations).
- Historical comparison: previous programmes ranged from £540m to £6.6bn, highlighting the unprecedented scale.
7. Key Modelling Notes
- Deployment and impact estimates rely on the National Buildings Model and policy‑specific models.
- Real‑world uptake may differ due to behaviour, landlord choices, housing‑market conditions and supply‑chain capacity.
- Projections incorporate interactions between policies to avoid double‑counting.
To Summarise
The Warm Homes Plan will accelerate nationwide deployment of heat pumps, rooftop solar, insulation, home batteries and heat networks, cutting household energy bills and supporting up to 180,000 jobs through the largest upgrade programme ever delivered in the UK. Backed by £15 billion in public investment and aiming to upgrade up to 5 million homes by 2030, it delivers major cost savings, decarbonises homes and boosts long‑term energy security.
Download the full policy document from www.Gov.com by clicking the image below
Download the full Warm Homes Plan: Technical annex
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Read related articles below:
Warm Homes Plan – Explains the whole plan (standard and large text)
Warm Homes Plan Public Sector Equality Impact Assessment
House of Commons Written Statement HCWS1264
Press Release Families to Save in Biggest Home Upgrade Plan in British History
