Storing of excess Renewable energy

Storing of excess Renewable energy 
    
     A Finnish town is transitioning away from fossil fuels for district heating using a large sand-filled energy storage tank called a "sand battery". 
       This innovative system, developed by Polar Night Energy, stores excess renewable energy as heat and can be used to warm homes and businesses. 
 Detailed are as under:

The "Sand Battery":-
  The system uses crushed soapstone to store heat, allowing for efficient and sustainable heating. 

Location:-
   The sand battery is in operation in Pornainen, a town about an hour north of Helsinki, Finland. 

District Heating:-
  The sand battery will be used to replace natural gas and oil in the town's district heating network. 

Benefits:-
    The project is expected to reduce annual CO₂-equivalent emissions by around 160 tons, a 70% reduction in the town's district heating emissions, according to Polar Night Energy. 

Scale:-
    The sand battery is designed to deliver 1 MW of thermal power with a storage capacity of 100 MWh, making it ten times larger than previous sand batteries. 

Transition:-
    The use of oil in the town's heating network will be completely phased out, and wood chip consumption will decrease by approximately 60%, according to Polar Night Energy. 

MJF Lion ER YK Sharma 

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