The 'trias energetica' describes the guidelines for an energy-efficient project. The strategic green heat project in Doel will completely meet these requirements.
1. Restrict energy consumption
As it stands now, each business separately generates the energy it requires to keep its processes going. Within this energy cluster, one plant - the Indaver and SLECO plant - will produce the steam and the companies will purchase heat to suit their requirements. The steam which is not used is converted into electricity in a turbine. The immediate recovery of the heat, instead of converting all the steam into electricity, results in primary energy savings.
2. Use of sustainable energy sources
Currently, each of the participating companies is running on 100% grey energy, namely gas. With the energy cluster, the companies will use the steam that Indaver and SLECO generate from waste incineration. Because almost half of the waste that is processed here is bio-organic, half of the recovered energy is renewable.
3. Use finite energy sources efficiently
As it stands now, 20 to 40% of the input energy from the waste is reused through conversion into electricity. Once the energy cluster has been completed, this will produce a higher yield: 80 to 90% of the input energy will then be reused by supplying heat. Steam is generated using large-scale, energy-efficient plants. Not much is lost during transport due to the good insulation of the network and the use of superheated steam at high pressure and temperature.