| Title | Borehole Thermal Energy Storage in combination with District Heating |
|---|---|
| Authors | Björn, Henrik |
| Year | 2013 |
| Conference | European Geothermal Conference |
| Keywords | Borehole thermal energy storage, thermal solar panels, district heating, grid balancing. |
| Abstract | Braedstrup District Heating Plant in Denmark has extended its traditional natural gas production plant for heat and power to also include thermal solar panels, borehole thermal energy storage, heat pump and an electric boiler. This gives the district heating plant a huge flexibility in its energy production and enables it to actively contribute to the grid balancing that becomes more and more urgent as the proportion of power supplied by sustainable energy sources such as sun and wind increases. A borehole thermal energy storage has been constructed to store the excess of solar energy, that the district heating plant produces during the summer. The energy is to be stored from summer to winter and will be recovered by a heat pump. The pilot plant has at the time of writing been running for little more than 6 months and the preliminary results looks promising in terms of recovery rates. The district heating plant can now actively participate in grid balancing whether there is a critical overflow on the power grid or there is a shortage of power due to lack of sunshine and/or wind. |