New deep geothermal heating project planned at Tampere, Finland

Tampere, Finland (source: flickr/ Joni-Pekka Luomala, creative commons)
Alexander Richter 1 Jan 2019

New geothermal heating project planned at Nekala in Tampere, Finland, is targeting a depth of 7-8,000 meters for wells to derive geothermal heat for a local district heating system.

In a release, Finnish drilling services firm Robit Finland Oy has announced a cooperation with TEGS Finland Oy on technology developed for the drilling of deep geothermal wells. The planned cooperation will focus on improving the performance of drill bits intended for deep well drilling. The goal is significant cost savings.

The geothermal heat produced by the deep well up to 7,000 to 8,000 meters to be drilled at Tampere, Finland will replace fossil fuels equivalent to the heating requirements of around 1,000 homes. One deep well will also require significantly less space above ground than traditional shallow geothermal wells. Heat can be stored in the deep well during the cooling season, which will improve the deep well’s efficiency ratio during the heating season.

Robit and Nocon Oy drilled earlier during the autumn 2018 up to 1,500 meters deep pilot well to Mänttä-Vilppula city. The well was completed in December 2018.

The Ministry of Economic Affairs and Employment has awarded TEGS Finland a grant of over EUR 2 million for the construction of a geothermal energy production (heat) plant at Nekala, Tampere Finland. Geothermal heat can be used in electricity generation and heating. The 7-8,000 meters deep energy well to be drilled at Tampere will heat circulating water for use in the district heating network. Construction of the production plant, which will generate 29,050 MWh of heat per year, will start at the beginning of next year.

Source: Robit Group