Energy service contracting (ESC) for the town of Sehnde
New boilers with condensing heating technology, speed-controlled circulating pumps, energy-saving lighting, ceiling insulation and the installation of a gas-powered combined heat and power unit (CHP unit) for the efficient generation of heat and power are just some of more than 60 measures through which the town of Sehnde near Hanover will reduce its energy consumption in the town hall and another ten public buildings by 30 percent with the help of the Berliner Energieagentur as the project manager for an energy saving contract.
In March 2010, the town of Sehnde and WISAG Energiemanagement have signed an energy saving guarantee contract. In the next few years, WISAG will realise annual savings of €130,000 on the cost of energy, corresponding to 30 percent of the town's total energy consumption. The €900,000 investment into new plant technology is funded by WISAG. Sehnde does not incur any expenses and will receive a remuneration of €9,000 per year from savings during the term of the contract.
When the contract ends, the savings will accrue in full to the budget of Sehnde. As project manager, the Berliner Energieagentur has supported Sehnde in preparing and carrying out the tendering process and prepared the contract. The energy service contract was designed by the Berliner Energieagentur based on the "Berliner Energiesparpartnerschaften" model (energy saving partnerships in Berlin).
Meanwhile, private service providers have been implementing efficiency measures in more than 1,300 buildings since the mid-1990s. The Berliner Energieagentur has played a decisive role in designing the model and is now developing appropriate guidelines for implementation at home and abroad.