Case Studies

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At Veolia we are always striving to deliver innovative ways to turn waste into a resource for our customers throughout the UK. Click below for some examples of our great work in action.

Churchill College in the University of Cambridge

Receiving its Royal Charter in 1960, Churchill College in the University of Cambridge is the national and Commonwealth memorial to Sir Winston Churchill and is situated on 42 acres in north-west Cambridge. As one of the largest Cambridge campuses, the College is renowned for its academic standing and has produced twenty-nine Nobel Prize winners among its past and present members.

The Challenge

To maintain its sustainability, Churchill College provides reliable and energy efficient heat and electricity supplies for its facilities to support its academic and research activities in mathematics, science and technology, the arts and humanities.

The Solution

Starting in 1993, Veolia designed and installed a 167kWe CHP unit to supply the campus. Operated and maintained by Veolia under a service agreement, the CHP completed over 120,000 generating hours over a 22-year life – equivalent to a vehicle completing over 5 million miles or 208 trips around the earth!

Following the success of the unit in 2015, the college decided to take advantage of the benefits of a modern, more efficient unit. Veolia’s CHP team designed and managed the installation and commissioned the unit.

The new CHP uses the latest lean-burn technology to generate low carbon electricity and heat for the campus, and will save an estimated 330 tonnes of CO2 emissions per year.

As CHP units utilise the heat produced in electricity generation to provide hot water, they are more efficient and sustainable, provide energy security and takes the power load off the UK electricity infrastructure.

The Results

  • 129,300 hours of operation
  • Combined Heat and Power (CHP) based system can reach 85% efficiency
  • Saves load on the national grid
  • Less exposure to electricity price fluctuations

CO2 reduction of over 6,000 tonnes from 22 years of operation of first CHP

20,815GWhr of low carbon electricity generation

31,200GWhr of low carbon heat

Veolia’s CHP programme has maintained long-term energy efficiency for the campus. Stable energy costs have helped cost planning and reductions in CO2 emissions have supported sustainability and environmental targets.


“This latest application of CHP demonstrates our long term commitment to deliver energy efficiency and low carbon energy to higher education. We currently have 25MWe of CHP capacity that provides energy on over 60 University campuses, supporting its education and research facilities and housing for more than 200,000 students.”

Gavin Graveson, Veolia’s Chief Operating Officer - Public and Commercial