What is Retrofit Accelerator - Workplaces?

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Retrofit Accelerator - Workplaces is part of the Mayor's £34 million Energy for Londoners programme which aims to make London's homes warm, healthy and affordable, its workplaces more energy efficient, and to supply the capital with more local clean energy.

Buildings are responsible for about 40% of the UK’s total carbon footprint. We need urgent action to meet zero carbon emission targets. 

Retrofit Accelerator - Workplaces (also referred to as RE:FIT) is an award-winning and tried and tested programme used to help make London's non-domestic public buildings and assets more energy efficient, lowering emissions and saving public money on energy spending.

The programme, established in 2009, not only reduces carbon emissions but also results in large guaranteed energy savings for the public sector 

The Accelerator helps a range of organisations including London boroughs, NHS bodies, central government departments, schools and other educational establishments, and cultural and heritage organisations to implement retrofit projects. It does this through:

  • the RE:FIT London Programme Delivery Unit, an expert team providing free end-to-end support needed to get projects up, running and successfully implemented
  • the easy to use RE:FIT framework of energy service companies, which saves time and resources for organisations that are procuring retrofit services and works which - as an energy performance contracting framework - guarantees energy and cost savings

Why use RE:FIT?


No-risk approach to getting your project up and running:

  • free expert consultancy and advice from start to finish
  • free benchmarking – helping you build the business case
  • the confidence of being part of an award-winning programme
  • fast and efficient process using an OJEU compliant framework of 16 service providers to choose from
  • the confidence of using a tried and tested scheme which has already supported over 220 organisations
  • a range of projects and technologies covered – the PDU has the breadth of skills and expertise to advise you on the right scheme for your organisation 

Guaranteed savings:

  • you keep 100 percent of your savings – no sharing or hidden costs
  • guaranteed return on investment
  • energy savings guaranteed – through a proven framework of reputable contractor

How does RE:FIT work?

How does it work? (the 7-step process)

  • supporting business case and funding

  • running your tender process 

  • working with your chosen contractor with design and works installation

  • monitoring and verification 


For a simple LED lighting retrofit, your project could be up and running within 6 weeks. Typically, more complex energy measures start being implemented between 5-12 months from the initial engagement.

Who else uses RE:FIT?

We're pleased to have worked with a number of public sector organisations:

London boroughs

  • Croydon
  • Ealing
  • Enfield
  • Haringey
  • Harrow
  • Hounslow
  • Merton
  • Sutton


  • Goldsmiths University of London
  • Imperial College London 
  • London Metropolitan University
  • London School of Economics and Political Science
  • Tower Hamlets College
  • University of London
  • Workings Men's College 

GLA family

  • London Fire Brigade
  • Metropolitan Police
  • Transport for London 

NHS and health

  • Barts Health NHS Trust
  • Epsom and St Helier University Hospitals NHS Trust
  • Newham University Hospital
  • Waltham Forest

Culture and heritage 

  • Kew Royal Botanic Gardens
  • Central Government
  • Department of Energy & Climate Change
  • Department of Environment Food & Rural Affairs

Who is funding the programme?

RE:FIT London is jointly funded by the Greater London Authority (GLA) and the European Regional Development Fund (ERDF) until September 2022 and is helping to achieve the Mayor's aim for London to be a zero carbon city.

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