How much energy is used in our buildings? Our buildings consume more than 40% of the energy used in Europe and North America. They are the key CO2 emitter, larger than transport and industry. Most of the energy in buildings is used for heating and cooling. A growth in living space and increased used of air conditioning in many countries add to the strong need to curb this energy waste. Buildings hold the largest potential for energy savings which are profi table to the building owner and beneficial to society. With well-known and tested technology, energy loss in buildings can be reduced by up to 90%. Unlike giving up our car and mobility, making buildings energy efficient will increase our standard of living and create more jobs. Building for the past or the future? A building may have a lifespan of 100 years or more. What will be the energy prices and environmental taxes over the next ten decades? Hardly any houses are constructed to counter the risk of rising energy prices. Energy waste in Europe Source: Eurima, The critical importance of building insulation for the environment, Bruxelles, 2002. Click to see large figure