13.10.2023
Source: Energy & Management Powernews
The Stadtwerk am See and the city of Meersburg have founded a company to implement a project with heat from Lake Constance water.
The Seewärme Meersburg GmbH was already announced in August this year. Now Alexander-Florian Bürkle, managing director of the public utility at the lake, and Meersburgs mayor Robert Scherer (parteilos) sealed the establishment of the Baden-Wuerttemberg joint venture with their signatures.
"We bring thereby an innovative energy project at Lake Constance on the way: the use of sea heat for the heat supply in the Meersburger city center", with these words the two partner representatives can be quoted in a message of the energy supplier. The two partners each have a 50 percent share. At the latest to 2033 the heat production is to be realized.
Managing directors of the new GmbH are Heike Sunday, Kämmerin of the city Meersburg, and Albert Klesel, range leader finances and authorized signatory with the public utility at the lake from Friedrichshafen and Überlingen.
When presenting the project in August Andreas Bachmaier, leader energy systems with the public utility, had quantified the investment requirement for the new society with approximately 8.4 million euro. In this amount subsidies are already considered.
In the planned plant water from approximately 20 to 40 meters depth will be taken from the Bodensee and led into an energy center. The heat will then be transferred to a second circuit via heat exchangers. While the lake water is fed back into the lake, the temperature in the second water circuit is to be raised to heating level using heat pumps. The connected buildings are to be supplied via a local heating network. Support is to come from a combined heat and power plant (CHP) and a peak load boiler. An intermediate storage is to function as a buffer.
Until the heat supply can begin, some detailed planning is still necessary according to the current communication. "We are talking about a project in five construction phases over the next ten years, in which we are building an innovative technology and a local heating network around 4.5 kilometers long in a historic city center," explains Albert Klesel. He adds, "That's where the processes should be well planned and timed, because of course we want residents and visitors to have as few restrictions as possible." Meersburg, a town of 6,000 inhabitants, is a tourist magnet.
The ultimate aim is to supply around 150 residential buildings, public properties and businesses on the lakeshore and in the town center with lake heat.
Author: Fritz Wilhelm
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