Case studies

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Brighton General Hospital: Heating decentralisation cuts carbon emissions by more than 30%

Zenergi was engaged to carry out out a technical feasibility study and financial appraisal co-funded by the Carbon Trust to assess the practical options and energy saving potential from decentralising the outdated steam boiler plant, distribution and condense return systems at Brighton General Hospital.

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Case study highlights

£1.4m project cost delivered over two phases

Complex project delivered in working hospital

Annual cost savings of approx. £130,000

Approximately 1,000t annual CO2 savings

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Unlocking £5 million in savings with ESOS compliance

How a global renewable energy leader turned ESOS into a strategic opportunity for efficiency and sustainability.

Energy savings
26,000,000 kWh
Carbon reduction
8,300 tCO₂e
Cost savings
£4.91 million

Powering a historic dining hall for St John’s School.

Our Siteworks team streamlined a complex meter installation to meet ambitious timescales and ensure a new dining hall opened on time.

Karina Joshi

Strategic Customer Success Manager

St John's School Customer Success Manager

Bill Validation case study for independent school

How one conversation led to a £107,000 refund for a leading independent boarding school

Billy Pryke

Strategic Customer Success Manager

How our energy audit identified savings of £50,000 for E-ACT.

Discover how our exciting new programme for Multi-Academy Trust, E-ACT, identified huge carbon and cost savings in just six months.

Identified energy savings
246,193
kWh
Identified carbon savings
48.16
tCO2e
Identified cost savings
£
50,114

Greener transport: helping Gregory Group meet ambitious goals.

A science-led partnership with one of the UK’s largest transport groups that led to impressive net zero acceleration.

Harry Eaves

Senior Energy Consultant

Zenergi

Discover how our energy audits highlighted £94,955 of annual savings for Aldermore Bank.

We’re helping Aldermore Bank to reduce carbon emissions and cut costs – all while keeping the bank’s net zero strategy firmly on track.

Total carbon saving
172.6
tCO2e
Total annual cost saving
£
94,955

Halving Glenmorangie’s energy costs through strategic building optimisation.

Discover how our partnership helped a whisky giant transform their facility’s energy efficiency with targeted solutions.

Estimated annual electricity consumption savings
59
%
Estimated annual gas consumption savings
52
%
Estimated annual overall energy savings
55
%
How we helped Danes Educational Trust unlock £166,000 for carbon reduction.

How we helped Danes Educational Trust secure £166,000 for carbon reduction.

Phase 2 LCSF grant awarded
£
39,000

Leigh Academies Trust saves £500,000+ through flexible energy purchasing.

Discover how a 10+ year partnership helped one of the country’s largest and most established Multi-Academy Trusts navigate a turbulent energy market

Achieved savings: Year one
£
399,311
Forecast savings: Year two
£
200,287
Forecast savings: Year three
£
43,511

Partnering with PR Associates to drive compliance and energy efficiency in schools.

We’re helping to ensure over 100 schools have the confidence to focus on their priorities – all while remaining compliant and optimising efficiency.

Simon Watts

Partnerships Manager

Zenergi

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