Renewable combination power plant

The Kassel University in Germany did a study on combining renewable energy sources for 100% power supply. The homepage is to be found at http://www.kombikraftwerk.de/index.php?id=27. The week point in the scenario is the lack of heat production that is strongly interact with the power production, also for a renewable power plant. I would recommend that the University in Kassel, utilized their own expertise from Prof. Klaus Vajen, an expert in solar heating, also large-scale.

The point of the study is, that it can be shown that the whole of Germany can be supplied with renewable energy. A simple statement, that lead me to the below memory:

Just to mention, similar scenario where made in the 80′th for the Nordic countries by among others the Technical University of Denmark, Niels I. Meyer.

Ikea active in large-scale heat storage technology

Ikea applies heat pump with bore hole storage for heating. The goal is to supply 100% of the heat demand by renewable energy sources by 2012. The plant in Karlstad, Sweden, coveres 85 procent of the heat demand for the 24,000 m² warehouse by the heat pump storage system. Additional systems are planned in Malmö, Uppsala and Helsingborg.

Ikea’s bore hole storage in Karlstad, Sweden (Foto: Ikea)

The system consists of 101 bore holes with a distance of 5.5 m and a depth of 120 m, sizing the capcity of 1,200 kW. In winter electrical heating is necessary to meet the demands. The system has an impact of 2,200 CO2-reduction.

These storage types are developed for district heating in combination with solar heating, recovering the storage with solar energy during summer.

Source: http://ing.dk/artikel/85149?nyhedsbrev