RequirementIn 2014, London Metropolitan University was
identified as England & Wales’s number one university for CO2
emissions reduction. Keen to build on this success, the university
developed a Carbon Management Plan, setting out a target of a
further 50% reduction in emissions from its operations by 2020. The
university needed to achieve these savings to maintain its HEFCE
capital funding allocations, mitigate the impact of rising energy
prices and enhance its environmental credentials.
To find a suitable partner to help deliver these savings, the
university launched a competitive tendering exercise under the
RE:FIT framework – a programme devised to help improve energy
efficiency in London’s public buildings through retrofit
schemes.
Energy and facilities management suppliers on the framework were
invited to conduct initial on-site and desktop assessments of the
university’s buildings and operations, and to draw up costed
proposals to deliver its carbon and energy saving targets
London MetropolitanUniversity
“Working with the team from ENGIE has been a very positive
experience. The process of developing the proposals was very
collaborative, with new ideas being discussed between us as they
were identified. We feel confident the measures introduced will
achieve our carbon-reduction targets, as well as delivering more
intangible benefits such as raising awareness of sustainability and
environmental issues among students and staff.”
Rachel WardSustainability ManagerLondon Metropolitan
University
LONDON MET - 2
Energy reduction over 7%
Total cost of installation £600,000
Return on investment(payback period in years) 6.8 years
Solution Rachel Ward, Sustainability Manager at London Met says:
“Following the competitive tender exercise we selected ENGIE to
deliver the energy-saving measures identified in their proposals.
We chose ENGIE because they had some great ideas, including
introducing solar PV generation to the university for the first
time, and had an impressive track record, particularly of working
with large universities. The level of savings they identified were
also in line with our targets.”
Once appointed, ENGIE specialists developed the tender proposals
into a binding Investment Grade Proposal (IGP), setting out in
detail the energy conservation measures it would implement and the
savings that would be achieved. The detailed savings set out in the
IGP were calculated using proven techniques and models – and were
guaranteed by ENGIE.
This meant that if any of the measures failed to deliver the
promised savings each year, ENGIE would make up the difference in
an annual reconciliation payment. This gave the university complete
assurance that the cost savings proposed would be achieved every
year.
LONDON MET - 3
High efficiency LED lightingENGIE replaced some light fittings
completely and retrofitted others with LED lamps. Using existing
fittings where possible ensured the upgrades were cost effective.
Where appropriate, lighting controls were also installed to
maximise energy savings. This measure alone will deliver almost two
thirds of the guaranteed energy savings.
Solar PVRoof-mounted solar PV panels were installed at the
Science Centre to generate renewable, carbon-free electricity for
the facility. Savings are achieved by using energy generated on
site rather than importing it from the grid. A display panel in the
entrance foyer shows how much electricity is being produced by the
solar panels. ENGIE also produced an Energy Performance Certificate
(EPC) for the building, which enables it to secure the highest
level of Feed-In-Tariff (FIT) – maximising the revenue earned from
the energy generated.
Air-conditioning fansIn the Tower Building ENGIE replaced the
existing air-conditioning fan motors with state-of-the-art EC
(Electronically Commutated) fans, which are much more energy
efficient. They reduce fan power while maintaining air volume flow
rates.
Chiller fansIn the Science Centre and Law buildings, ENGIE
replaced existing low-speed axial AC condenser fans with the latest
high-efficiency EC fans. This reduces energy consumption by
allowing the chiller compressors to work at lower pressures due to
increased air flow. It also results in lower noise levels.
Occupancy controlsThis one-off pilot project involved installing
occupancy controls on Level 2 of the Administration building in the
Tower building to prevent unnecessary cooling. PIR sensors now
ensure that cooling systems only operate when the room is occupied.
The savings achieved by each of these measures are carefully
monitored by ENGIE. The systems are continuously fine-tuned and
adapted where necessary to ensure that energy savings are
optimised.
Advanced energy-management software is used to track and report
energy consumption and savings, backed up by expert analysis,
verification and interpretation from ENGIE. Each year, ENGIE
produces a report detailing the energy, carbon and cost savings
achieved, alongside the targets for each – enabling the university
to monitor progress toward its ultimate carbon-reduction goals.
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