Supply swiftly restored following technical difficulty
28-3-2017

Enemalta plc restored supply to customers affected by Tuesday morning’s technical difficulty within 50 minutes.

The Company registered a sudden reduction in capacity to the national grid at around 1000hrs. Electricity supply to several localities was immediately interrupted through the automatic shedding procedures to balance the network load and avoid a total shutdown of the system. Capacity was lost after the Malta-Italy Interconnector transformers tripped due to a technical difficulty during a scheduled maintenance operation at Enemalta’s terminal station at Ragusa.
 
Within a few minutes, Enemalta dispatched additional capacity from its emergency plants at Delimara, from the gas-powered engines of the Delimara 3 plant (Delimara 3 Power Generation Ltd) and from the Delimara 4 CCGT plant (Electrogas Malta Ltd), which is currently undergoing operational testing ahead of final commissioning. Through this capacity, electricity supply to most customers was resupplied within a few minutes. Most areas affected were reconnected to the grid in less than 30 minutes. The network was re-energised progressively to minimise the risk of further difficulties. Within 50 minutes all services were restored.   
 
Electricity supply could be restored swiftly since Enemalta now has several quick-start electricity generation sources available in its energy mix. The additional generation capacity from the Delimara 3 and Delimara 4 gas-fired plants was made available to Enemalta as soon as they were dispatched to provide for the load previously supplied through the Interconnector.  
 
Further inquiries into the cause of the incident are now underway. 
 
Enemalta plc would like to thank its employees for restoring supply to all customers in the shortest time possible. Whilst regretting any inconvenience caused, it would also like to thank its customers for their cooperation during this emergency. 
 
The Company reiterates its commitment to continue working to secure a diversified mix of clean, reliable and efficient electricity generation sources and to consolidate the national electricity grid to further reduce the risk and duration of service interruptions to its customers.  
 
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Communications Office