Through a research and development support of 11.9 mio. DDK, the Danish government pushes for CSHP with seasonal storage. In charge for the project is Planenergi, the most active consulting company in the business together with the plant owner, Dronningelund District Heating. The overall concept will be to use solar heating in combination with a large scale thermal storage and a heat pump. The collector area is planned to be approx. 35,000 square metres, a storage volume of 60,000 m³ and a heat pump with 3 MW effect.

The seasonal storage is planned as a pit water storage with floating lid, a well-known solution applied in the past.

The overall budget for the project is 80 mio. DDK or approx. 10.1 mio. Euros.

We keep an eye on this project at this blog.80

The Danish Engineering Newspaper did present the following news about a new very large CSHP plant:

Place: Denmark, Brænderup (near Horsens), at the mainland.

Size: 8.000 m² solar collector field, sized to deliver 10% of the district heating demand.

Of the 13 million total cost, the 3.5 millioner DDK are funded by a public body, Energinet.dk, that last year did analyse solar and district heating lead to positiv economical results. This analysis pointed out that this is due to the fact that the heat- or power plant can be turned of for some periods, where the price for power is too low to produce.
The maximum effect is estimated to 6 MW heat, with an annual production of approx. 4,000 MWh heat, leading to a yearly emission reduction of 4,300 tons CO2. The plant is designed by consultant company Planenergi and Ramboll, Denmark with Arcon solar collector producer, the same companies as involved in most of the plants in Denmark.