London / United Kingdom · CITY × MARKET
Make occupied-building retrofit easier to specify and deliver. The environment progress report identifies building decarbonisation and community-led neighbourhood work as implementation priorities.
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THE PLACE BEHIND THE OPPORTUNITY
The Greater London Authority's fourth Environment Strategy progress report documents the acceleration of the city's net-zero target to 2030 and work on buildings, neighbourhoods, resources, and adaptation. Policy guides discovery; retrofit customer demand and financing still need validation. Distinguish Greater London from individual boroughs, and strategic policy from service procurement.
Greater London AuthorityGreater London Authority / City IntelligenceGreater London Authority / City IntelligenceGreater London AuthorityFinancial Conduct AuthorityGreater London AuthorityReLondonUndaunted / ImperialLondon context sits beside the global signal. Different geographies and units remain separate.
Target documented in 2024 progress report
Greater London
Mayor's accelerated net-zero target; a policy ambition, not a measured result.
Greater London Authority2024; covers progress through February 2024Each block = USD 100 billion
2026 estimate
Global; energy-system spending
Estimated global energy-system capital expenditure in 2026; not a startup or city addressable market.
International Energy Agency28 May 2026; full-year estimatesVisuals reproduce the cited signal, including its original scope. Rounded unit graphics are reading aids; the displayed figure and source definition govern the claim.
A proposed operating map for climate & energy. Read the handoffs before choosing a product to build.
Housing associations, borough housing teams, facilities managers, and qualified retrofit providers with a funded programme.
Compare a small set of similar occupied homes, document baseline conditions, and test one retrofit measure with resident consent.
Editorial system map derived from the research brief. The sequence is a framework for discovery, with no claim that a Pheonix programme, customer or pilot is operating.
RESEARCH HYPOTHESIS · TO VALIDATE LOCALLY
A proposed service could assemble surveys, resident communication, installer sequencing, and post-installation checks for a social-landlord portfolio. Start with a repeatable building type rather than assume one solution fits London's varied stock.
An impact claim should survive a difficult question. Design the measurement before you design the success story.
Start in London. Define the people, geography and existing service before measuring a change.
Use the proposed experiment above as a starting question. Agree the local scope, duration, comparison and safeguards before beginning.
Ask what would have happened otherwise. Compare like with like and record how much uncertainty remains.
Weather-adjusted energy, bills, comfort, damp-related complaints, installation defects, and carbon using declared factors.
Check ventilation, overheating, quality assurance, and resident disruption; modelled savings alone do not establish lower bills.
Proposed measurement pathway. No baseline, pilot result, participant count or achieved impact is being reported in this diagram.
PUT IT IN PERSPECTIVE
The IEA estimates global clean-energy investment at USD 2.2 trillion in 2026. This is capital expenditure across a broad energy system, not the addressable market of a startup or a city.International Energy Agency
The IPCC identifies efficiency, demand management, and changes in infrastructure use as part of mitigation. Its findings also distinguish groups needing more energy services from those able to reduce high consumption.IPCC
Explore this market in all 12 citiesPublication dates and geographic scope are shown for each source. Linked institutions are references, with no affiliation or endorsement implied.
Greater London Authority · 2024; covers progress through February 2024
Greater London; targets and programme progress, not a current market valuationGreater London Authority / City Intelligence · 2026 report; accessed 2026-10-14
London; cited food-security data for 2024/25, with survey uncertaintyGreater London Authority / City Intelligence · 2026 report; accessed 2026-10-14
London and boroughs; healthy-life-expectancy estimates cited for 2022–2024Greater London Authority · Decision signed 2018-11-26
London; 2018 policy framework and original 2018–2023 implementation periodFinancial Conduct Authority · May 2025; 2024 survey
UK adults nationally; not a London-specific estimateGreater London Authority · 2022-02-04; signed 2022-01-19
London adult education and skills policy; historical decision and strategyReLondon · Undated; accessed 2026-10-14
London public partnership; business and community resource programmesUndaunted / Imperial · Undated; accessed 2026-10-14
London-based climate innovation support and wider UK activityInternational Energy Agency · 28 May 2026; full-year estimates
Global / regionalNOW WELCOMING MEMBERS WORLDWIDE
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