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EY Tool FAQs

ADEPT / EY Net Zero Estates Tool – FAQs

Why is ADEPT working with EY?

Addressing Scope 1 and 2 greenhouse gas (GHG) emissions is a priority for all local authorities. At present, there is no consistent approach to decarbonising the built environment. Commissioning an assessment from independent contractors is an expensive process, so the partnership with EY offers ADEPT local authority members access to the EY Net Zero Estates Tool at a reduced cost.

Who is EY?

EY exists to build a better working world, helping to create long-term value for clients, people and society and build trust in the capital markets. Enabled by data and technology, diverse EY teams in over 150 countries provide trust through assurance and help clients grow, transform and operate. Working across assurance, consulting, law, strategy, tax and transactions, EY teams ask better questions to find new answers for the complex issues facing our world today. For more information, please visit:

Why is this a pilot programme?

ADEPT is committed to providing a dynamic learning environment for our members across all aspects of their work with a focus on current and future priorities. ADEPT want to gauge the level of interest of ADEPT members in this new offering from EY and also understand if there is wider benefits from working together. The first cohort of 5-10 members will also report back on their experience of using the tool, enabling future adjustments. We anticipate this will be an evolving programme as we gather more data from local authorities using the tool.

What is the Net Zero Estates Tool?

The Net Zero Estates (NZE) tool was developed in 2021 by EY in partnership with global engineering and sustainability specialists Mott MacDonald. The tool supports estate decarbonisation, following the method used with the UK Government to decarbonise the public sector estate. Linked to a database of over 50,000 buildings, the tool can baseline and plug data gaps to provide realistic portfolio level information, without the need for site visits to fill data gaps.

Please click here to see a short video explaining the tool.

What does it do?

The tool has the ability to model different scenarios to analyse the financial impact of different decarbonisation plans to aid in decision making.

  • The tool rapidly baselines estate energy usage and carbon footprint
  • Estimates costs of intervention activity
  • Assesses organisational capability to decarbonise

What is the timeline for the pilot scheme?

If you are considering joining the pilot, you will need to express your interest by 16th June. Following your expression of interest, you will be invited to a briefing session where EY will outline the project in more detail, give a walkthrough of the tool and its outputs, the data requirements and the approach to procurement and contracting. EY will then work with individual members to agree the first cohort, with a target of getting the first group under contract and starting on 1st July.

The aspiration is for each cohort to be 10 members to allow for shared learning, additive collective insight and economies of scale in delivery. More than one cohort may be arranged, should the pilot be a success.

How will the pilot scheme work?

You will be asked to designate a project lead who will attend a series of engagement sessions. The first two weeks are the most intensive, as EY will require some basic data from the authority. The dataset required is one that most authorities will have - just basic data for the tool to work - but authorities with more granular data will receive more detailed and granular output. A one-to-one session with EY can be provided to assist with this if needed.

EY will then spend around four weeks modelling the data, before running a scenario planning workshop with your individual council to agree assumptions and parameters. Following this, EY will spend a further four weeks developing out your scenarios and accompanying written report. You will then be given access to the scenario planning tool and the report will be issued. EY will then work with ADEPT leadership to develop a cross cutting report, covering the whole cohort, key findings, opportunities and themes. The whole process will take 8 – 12 weeks.

How will my local authority benefit?

Each participating local authority will receive a detailed individual report, as well as gaining rapid clarity and costings on its unique transition requirements, including scenario and pathway analysis with associated carbon and cost implications. This will allow you to agree strategy, prioritise interventions and build the business case for investment in an accelerated way. Each local authority will also have access to the wider ADEPT report, so you can see how your authority compares, how others are approaching decarbonisation of the built environment and collaborate with other members of your cohort, including the potential for joint procurement of retrofit.

What will it cost?

The first cohort is aiming be a group of 10. Providing there is sufficient interest to achieve this number, the cost to each local authority will be £35,000 (a member saving of £15,000 / 30%).

The contract for the work will be between each local authority and EY. To allow the special rate above, EY’s standard terms and conditions will be used. These will be provided to those who express interest, along with a short paper that can be used for any required approvals.

Have other local authorities used the tool?

Yes. We have posted a case study here. We are looking to have secured a cohort of members interested in participating in the pilot programme by 16th June 2022. We will then set up a virtual briefing where you will be able to ask questions of local authorities which have already used the tool, as well as members of EY and ADEPT.

What are the benefits for ADEPT local authority members?

Having access to the tool as part of a cohort enables ADEPT members to benefit from the EY Net Zero Estates Tool at a discounted rate (approximately 20-30% discount compared with procuring directly with EY) providing value-for-money for members.

Being part of a cohort using the tool at the same time in a shared learning experience will give participants the benefit of peer support and advice, as well as working directly with EY.

What is the benefit to ADEPT?

Sponsored by EY, ADEPT will receive an overall programme report providing insight, key findings and invaluable data. The report will be used to improve future member programmes, and inform both the Association’s work and its ongoing conversations with government on decarbonisation and the role, achievements, actions and resource needs of local authorities.

In offering this opportunity to ADEPT members, ADEPT will be taking on a number of new responsibilities and will receive a fee of 5% for each local authority member that signs up. As a not-for-profit organisation, any surplus is ploughed back into the Association and used to further improve services to members.

Who do I contact for further information?

Please contact ADEPT here to register your interest.

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