Introduction Essent • Essent is a Dutch based utility with a turnover of EUR 7, 4 billion and appr. 11. 000 employees • Essent is largest producer of green electricity and biomethane in The Netherlands • Essent Warmte operates several district heating grids and has more than 70. 000 customers
district heating Essent • traditional district heating (heat from power stations and CHP) • since 2000 several projects with heat pumps and seasonal heat storage • in 2007 three projects with biogas CHP in new urban areas with low-energy houses (heat demand 20 -30 GJ is 5500 -9000 k. Wh per year) – Techum/Jabikswoude in Leeuwarden – Zuidbroek in Apeldoorn – Polderwijk in Zeewolde highest reduction of CO 2 with biogas CHP
Leeuwarden Zeewolde Apeldoorn
Zuidlanden - Leeuwarden • district heating for 750 new low-energy houses, school and care centre • extension with 300 houses expected • dairy cattle farm "Nij Bosma Zathe" of Wageningen University produces biogas • 5, 5 km biogas pipeline for transport of biogas to 2 x 340 k. W CHP located between the dwellings Techum and Jabikswoude
biogas pipeline farm district heating CHP district heating
Zuidbroek - Apeldoorn • district heating for 2500 low-energy houses, schools, shops and care centre • production of sewage gas and biogas from slaughterhouse waste at sewage treatment plant of Waterschap Veluwe • 2, 5 km pre-insulated pipe for transport of green heat to Zuidbroek residential area • community of Apeldoorn plans to be energy neutral in 2020; district heating Zuidbroek in project Sorcer of EU Concerto+programme • biofuel peak boiler, hot fill connection for dishwasher and subsidy for individual pv with support of Sorcer
Polderwijk - Zeewolde • district heating for 3000 new houses • dairy cattle farm produces biogas • 6 km biogas pipe line for transport of biogas to 1 MW CHP in Polderwijk boiler house • 50% reduction of CO 2 for heating and electricity consumption compared to standard for new houses
biogas CHP 3000 houses Polderwijk Zeewolde van melkveehouderij Groene warmte uit biogas
Why biogas for district heating? • biogas can easily be transported to residential areas • heat of biogas engine fulfills demand for legionella safe heat supply to houses (temperate 70 degrees for domestic hot-water) • green heat is effective tool in development of climate neutral cities
Essent: more biogas in the city • Essent Warmte is offering district heating based on biogas for several new residential areas to communities in The Netherlands • Essent Warmte is investigating supply of biogas to CHP in existing district heating projects • Essent Warmte actively promotes maximal utilisation of biofuels and is member of Dutch association for biochp www. biowkk. nl
design of energy station Zuidlanden Leeuwarden
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