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S3-E1 - Turbocharging the benefits of Great Britain's emerging home energy efficiency sector

8 October 2025

In this episode, Baringa's Ellen Fraser hosts a discussion with Sharon Johnson, Managing Director of AgilityEco and Rebecca Teasdale, expert in Home and Transport Decarbonisation at Baringa.

In this episode, we discuss a recent study that AgilityEco commissioned Baringa to deliver ‘Turbocharging the benefits of Great Britain's emerging home energy efficiency sector.’ It highlights the opportunity for energy efficiency upgrades, which could also grow the home decarbonisation sector, create jobs, and boost the economy. The report showed that improving the energy efficiency of residential housing stock to an Energy Performance Certificate (EPC) rating of C or above is not just an environmental necessity but also a powerful economic strategy that can deliver multifaceted benefits for society. To support these efforts, we need the Government to implement a consistent policy framework, along with a committed Warm Homes Plan.

About our guests:

Sharon Johnson

Sharon Johnson, Managing Director, AgilityEco

Since joining AgilityEco in 2021, Sharon has successfully led the business through acquisition by M Group and continues to drive the growth of AgilityEco’s fuel poverty and energy efficiency services.
 
Prior to this, she spent over 20 years at Centrica plc (British Gas) working in director and senior management roles. Her executive responsibilities included leading net-zero activities, heading their £300m smart meter programme, the delivery of ECO and Warm Home Discount Obligations, and establishing the British Gas EV charging point installation service. 
 
Sharon combines extensive experience in domestic energy policy with a solid understanding of how the energy transition can and should address fuel poverty and decarbonisation imperatives.  

Rebecca Teasdale

Rebecca Teasdale, expert in heat decarbonisation, Baringa
Rebecca leads Baringa’s heat and home decarbonisation team and works with clients to develop detailed business cases for the decarbonisation and electrification of heat across the value chain. Coming from industry, she has a deep understanding of implementation of heat decarbonisation. Rebecca has significant experience working globally across the full decarbonisation eco-system with energy businesses, Financial Institutions, Investors, Government, and others from commercial strategy to implementation and delivery.

 

About our hosts:

Ellen Fraser

Ellen Fraser, Partner and expert in Energy and Resources, Baringa

Chances are, you’ve already met Ellen. When it comes to the energy sector, she’s a trusted expert – a familiar face commenting on the BBC, she’s quoted everywhere from the Financial Times to The Guardian. And at Baringa, one of her big clients is energy regulator Ofgem.
Ellen’s talent for decoding a complex industry is her opportunity to not only explain it to others, but to be inside the engine room of change. She’s sat in boardrooms with the CEOs of every major UK energy supplier. And her work with Ofgem cuts to the heart of policy and regulation. Ellen believes even the most difficult situations – like a national energy price crisis – can focus minds on the world’s move towards clean, renewable power.
Ellen takes complicated questions and strips them down. She looks for simple, effective solutions. The “so what?” buried in a pile of detail. With this approach, she steers her clients around pitfalls. 

James Constable, expert in Corporate Decarbonisation, Baringa

James specialises in commercial strategy, proposition development and operational excellence, with a focus on the GB energy services and distributed energy market. He is working on the development and expansion of Energy Source, our software solution enabling large energy users to strategically manage their power position - from hedging and demand forecasting to corporate PPAs and decarbonisation strategies. Built on decades of experience advising the world’s largest energy users, and underpinned by bankable power projections, it provides continuous access to investment-grade analytics, market intelligence, and strategic support. James is passionate about helping organisations navigate volatile power markets, meet their net zero goals, and unlock commercial value through smarter energy

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