During CNN 's `` Going Green : Green Light for Business '' coverage , we 've asked businesses to tell us how they balance the imperative for profit with environmental concerns . Anders Eldrup , CEO and President of DONG Energy , tells us about the company 's plans to switch its reliance from fossil fuels to renewable energy . There are many reasons as to why coal today is the dominant fuel in power generation . In coal many countries found a way to alleviate the extreme dependence of Middle East oil after the 1970 's oil crisis . Horns Rev II will be the world 's largest offshore wind farm when it opens on September 17 , 2009 . But the solutions of yesterday are not necessarily the solutions of today . We now know that fossil fuels are the prime contributors to global warming . Today 85 percent of DONG Energy 's production comes from fossil fuels , whereas 15 percent comes from carbon-neutral sources . DONG Energy wants to turn the numbers around within one generation , so that 85 per cent of our energy production is carbon neutral . We call the vision 85/15 . At present we are formulating the strategy through which our vision will be achieved . The strategy is to create growth and reduce CO2 emissions at the same time , and key elements will be increased efficiency and more biomass and wind energy . Efficient power plants Energy efficiency is an often overlooked method of reducing emissions . DONG Energy 's power plants rank among the most efficient with efficiency rates of up to 47 percent and we constantly work to improve efficiency . Furthermore , the central power plants are combined heating plants that channel excess heat from power production to consumers for domestic heating . Such use of energy elevates efficiency rates to 94 percent . Biomass in power plants To further bring down emissions high efficiency must be supplemented by renewable fuels such as biomass . Already today , Danish power plants use half of the straw from Danish agriculture in our power plants along with increasing quantities of wood chips and wood pellets . Wind power works Today , DONG Energy has built half of the world 's offshore wind mills and wind energy will be an important contribution to achieving the 85/15 vision . Off the coast of Western Denmark , DONG Energy is completing the construction of the world 's largest offshore wind farm , Horns Rev II . When it opens on the 17th of September this year , its 91 windmills will generate enough power to supply 200,000 households . The offshore wind farm , London Array , in the Thames Estuary , will be another testimony to the potential of wind energy . DONG Energy owns 50 percent of the 1GW London Array project , which will be the world 's largest offshore wind farm , powering 750,000 homes . First phase of the London Array is due to be completed by 2012 . Green transport The uneasy companion of large quantities of wind power is great variation in power production due to the intermittency of wind . Electric cars can help absorb the surplus power production when energy production is high because of strong winds and when energy consumption is low at night . More electric cars simply mean more wind energy . In addition , electric cars can reduce the rapidly growing CO2-emissions from the transport sector . DONG Energy is developing the infrastructure and technology that will allow for cleaner and more intelligent forms of transportation . But the approach to the transport sector has to be broad based . DONG Energy is building one of the world 's first demonstration plants for second generation bioethanol in Denmark . Contrary to first generation bioethanol produced from food crops , second generation bioethanol is based on residual products from forestry and agriculture . The plant will produce 5.4 million liters of clean and affordable second generation bioethanol each year . The role of politics These are key elements in our strategy to simultaneously pursue growth and reduce CO2 emissions . But politicians must contribute by creating a political framework that aligns economic growth and climate mitigation . Concerns over growth and over climate change mitigation should not have to be balanced . They should be integrated . On one hand , politicians must create economic incentives by ensuring a high price on CO2 and a global carbon trade system shared by all developed countries . On the other hand , politicians must formulate ambitious car-emissions standards , building codes etc . The first step towards aligning growth and climate concerns has to be taken in Copenhagen in December this year .
CNN aims to reduce its reliance on fossil fuels to produce energy . Heavily involved in wind energy , has built 91 of the world 's offshore windmills . Opening world 's largest wind farm in today , London Array has half windmills . Eldrup : `` Economic growth and climate mitigation concerns must be aligned ''