21.11.2023
Source: Energie & Management Powernews
GP Joule has commissioned a large heat pump in the district of Donau-Ries, which is supplied with electricity directly from a nearby PV park.
A large heat pump is now providing warm homes in the Bavarian town of Mertingen in the district of Donau-Ries. With a thermal output of up to 900 kW, the complete air/heat pump solution, which has now been connected to the grid, will feed into the heating network of the community of 3,700 inhabitants at a flow temperature of 80 degrees, according to a press release from project developer GP Joule.
The electricity for operating the system will come directly from a nearby 750 kW photovoltaic system, among other sources. To ensure that as much of the solar power as possible can be used for heat production, the heat will not only be fed directly into the grid, but can also be temporarily stored in two buffer tanks, each with 84,000 liters of water.
The municipality of Mertingen has been relying on district heating since 2017. Together with GP Joule, the municipality founded the company "ProTherm Mertingen", in which the municipality holds 55% and the project developer 45%. To date, the network has been fed primarily from biogas waste heat from two local production plants and from a wood chip plant.
The construction of the large heat pump had become necessary due to the expansion of the network. The 20th construction phase is due to begin in 2024, in which two kilometers will be added to the network, which is currently around 14 kilometers long.
Author: Katia Meyer-Tien
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