Bulgaria holds the highest battery energy storage penetration rate in the entire world – nearly doubling its total capacity in less than six months.
The Electricity System Operator (ESO) said operating power online has reached 6.23 GW altogether late last month, compared to 5.41 GW in mid-August.
Despite this boom in storage, electricity prices have remained high in Bulgaria, due to a multitude of factors – the heaviest being their lack of ability to bring down wholesale prices and smoothing out cross border energy imports.
Bulgaria’s BESS facilities took the fall during the heatwave and recent storms, supplying stable electricity even throughout volatile market times, whilst allegedly ‘greener’ countries struggled to keep up – including the UK.
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