Improving efficiency is the most immediate and cost-effective way to reduce our greenhouse gas (GHG) emissions. The less fossil-fuel energy we use, the fewer carbon emissions we produce. In 2011, we continued to measure the efficiency of existing practices and to invest in technology and processes that use less power. We are also driving down energy use through changes in behavior.
In Baddi, India, Wrigley saved more than 25,000 kilowatt hours of energy in 2011 through operational upgrades. The site installed thermostatic controls that switch off air-conditioning units when an area is cool enough, and motion sensors that automatically shut off lighting in areas with less traffic.
A team of Associates at Mars Drinks, Basingstoke, U.K., has implemented a number of energy-saving projects, from switching off lights in unoccupied areas to optimizing the building management system. This has saved around 1,000 kilowatt hours per week. The site also replaced a total of 378 light fittings with energy efficient alternatives, which improved the quality of light and reduced energy consumption. This will cut energy use in the office by approximately nine percent and save £11,000 a year.
Over the last three years, Associates at Mars Food’s Oud-Beijerland factory in the Netherlands reduced energy consumed at the site by 18 percent. To achieve this reduction, the site modified the way process water is heated and improved the control of cooling water pumps.
Mars Food Australia, Wyong, installed a state-of-the-art co-generation plant in 2010, efficiently generating power and thermal energy from a single fuel source, in this case natural gas. This has contributed to a 19 percent reduction in GHG emissions per tonne of product. In its first year, the site saved AU$726,000 in electricity costs and reduced GHG emissions by 1,300 tonnes.
Mars Food in Olen, Belgium, has invested US$500,000 in a pilot project to research new technologies for drying rice. This could reduce GHG emissions by up to 50 percent compared to current drying operations.