Intelligent CIO Europe Issue 20 | Page 51

COUNTRY FOCUS: NETHERLANDS “ THE PROJECT ON BATTERY STORAGE IN THE JOHAN CRUYFF ARENA COULD VERY WELL SERVE AS AN EXAMPLE TO THE DATA CENTRE INDUSTRY. www.intelligentcio.com A subsidiary of the Johan Cruyff Arena – called Amsterdam Energy Arena BV – has invested in a room filled with 61 racks full of batteries. These come from Nissan’s electric car – the Leaf. storage system linked to solar panels. The Amsterdam Arena has now installed 61 racks with 590 battery packs. Good for 3 MW and 2.8 MWh. Generating and using After a number of years, the capacity of the batteries of these cars drops from 100% to 80%. This decline means that the batteries are no longer suitable for use in an electric car and therefore need to be replaced. What to do with so many ‘useless’ car batteries? It turns out, however, that these batteries are still perfectly suitable for storing electrical energy in, for example, an energy What exactly does the arena use the stored energy for? This is first of all to compensate for the mismatch between the moment of generation and the time of use. The 4200 solar panels on the roof of the stadium generate electrical energy during the day, while many sports matches and concerts, for example, require energy in the evening hours. These are serious amounts of energy. If the arena is running at full speed in the INTELLIGENTCIO 51