Alternative Energy
Generating renewable energy is a key part of our climate change strategy. We are installing alternative energy sources on site such as wind, solar, bio-gas, combined heat and power (CHP) and combined cooling, heat and power (CCHP).
In the US, Fresh & Easy's £7.5 million investment to install 46,450m2 of solar panels at its California distribution centre is now providing nearly three-quarters of the facility’s energy.
In 2008 in Turkey, we built the first trigeneration scheme to power a shopping centre. The 2.2MW plant will cut carbon emissions by 16%.
In the UK, in 2008, we invested over £26 million in 47 CHP and CCHP plants for local generation, as well as 27 wind turbines and one store installation for solar generation. These technologies are expected to reduce our carbon emissions by about 6,000 tonnes of CO2 per annum.
Most of our CHP plants will run on natural gas and some will run on renewable fuels such as recycled vegetable oil, reducing carbon emissions further.
Refrigeration
HFC gases were introduced as a replacement for ozone-depleting CFCs and HCFCs, but we now know that they are an extremely potent greenhouse gas. Over a fifth of our carbon footprint comes from refrigerants, and we are working hard to reduce the impact of our fridges on climate change.
We have been investigating ways of replacing HFCs with a natural alternative. Our distribution centres in the UK now all use natural refrigerants. We have tested low-carbon refrigeration systems in four stores (Swansea, Wick, Shrewsbury and Cheetham Hill) and are using what we have learned to develop a system for all our stores.
We have also been trialling new technologies to make our fridges and freezers more efficient, including:
using low energy LED lights to light our freezers instead of fluorescent bulbs which produce heat;
replacing the small heaters traditionally used to stop freezer doors from steaming up with a special film that requires no energy to keep glass clear; and
testing whether we can put doors on all our freezers in stores without interfering with our customers' shopping trips.
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