Heat supply from biomass power plant
Twence has had a biomass power plant since 2007. We convert biomass into green electricity in this plant, enough to provide a town like Hengelo with electricity. We also intend supplying heat from this plant. This will raise the efficiency of this plant considerably: the extraction of heat is expected to see this plant produce three times as much renewable energy from the same amount of biomass from 2018 onwards. That is approximately 450 GWh renewable heat and green electricity.
The Dutch government wants the percentage of renewable energy to increase: from approximately 5 percent now, to 14 percent in 2020 and 16 percent in 2023. The energy supply must be fully renewable in 2050. These objectives have been taken over by provinces and municipalities in their own objectives.
Twence wants to realise half of this for the shareholding municipalities (7 percent of their total consumption). Six percent will already be achieved in 2018 once the biomass energy plant also starts supplying heat. Heat extraction on the scale envisaged by Twence is unique.
The extensive engineering process and the tendering process for the components needed for the plant’s retrofit were initiated at the end of 2015. The conversion is currently scheduled to commence at the beginning of 2017, while the plant continues to operate at full capacity. The plant will be able to start supplying heat in the second quarter of 2018.
Twence will sell some of the extra heat to the existing customers Ennatuurlijk (Enschede district heating) and AkzoNobel. We will use some of the ‘new’ heat in our own processes, for capturing (and marketing) CO2, for example. But there is even more heat available, which can benefit other companies with a considerable heat (or cold) requirement in addition to the existing customers. The energy can be used for cooling, hygienisation, heating of buildings, the process industry and drying processes.