Fuente: www.consultant-news.com Fecha: 29.03.2011
PwC to power new London office by recycling cooking oil
Each week two 6,000 litre tankers will be filled with used cooking oil collected by Arrow Oil from City centre offices and restaurants. The oil will be transported to a local refinery, Uptown Biodiesel in Southwark, and then on to PwC for use in the firm’s state of the art tri-generation facility on site at their new office at More London.
Over 45,000 litres of cooking oil will be sourced per month, the equivalent of the oil needed to fill 9,000 average domestic deep fryers. The tri-generation facility, the largest installation of its type in a commercial office building in the UK, will use 100% biofuel. The oil will be used to fire two large generators, creating 25% of the electricity needed for the building as well as 20% of the energy needed for heating and cooling. Overall, 25% of the energy needed in the building will be generated on site.
Guaranteeing the source of the supply within the London area was critical to the deal, as supplies from outside the area would have increased the carbon footprint of the oil.
PwC worked with its catering partner ARAMARK to secure supplies from other offices around the City and oil collection company Arrow Oil to source supplies from a network of restaurants, hotels and bars within the M25. Pub group Fullers, restaurant chain Zizi’s and City wine bar chain Corney and Barrow are among those participating in the recycling scheme for cooking oil.
Jon Barnes, head of Building & Facilities Services, PwC said: “When you think of green technologies you don’t think of used oil from a kitchen but the reality is these technologies offered us a real low carbon alternative to traditional fuel. It was an ambitious plan, when you realise a small restaurant might use 10 to 20 litres a week, and you see the scale of the deal we’re talking about, for just one site.
“Securing the supply within the M25 was essential, as otherwise the carbon footprint for moving the oil increases and would have defeated the purpose of investing in the low carbon technology.”
The 7 More London office was the first in London to achieve the BREEAM Outstanding rating for its environmental performance and design.
More than 50% of the building’s energy demand is met from low and zero carbon technologies and 25% of the building’s electricity will be generated on site, including solar panels to heat water. A Chiller Heat Recovery system recycles waste heat from the chiller units and the lighting has daylight saving control.
PwC has targeted a reduction in energy usage per square meter of office space of 25% by 2012 from a 2007 baseline. The firm has achieved 16% to date.