July 19, Colombo (LNW): Sri Lanka is moving ahead with plans to reduce its dependence on diesel-fired electricity generation by expanding battery energy storage capacity across the national grid, with the target of adding around 750 megawatts (MW) of storage capacity by the end of 2027.
National System Control Center (NSCC) Chairman Dr. Pradeep Priyadarshana said the integration of large-scale battery storage facilities would play a key role in managing electricity supply and reducing the need for costly diesel-based generation.
Speaking in response to an inquiry, Dr. Priyadarshana said work on introducing battery energy storage systems has already commenced, with 160 MW of capacity imported into the country and currently being installed.
He said the Government is also seeking private sector participation to expand storage capacity, with tenders already called for an additional 250 MW of battery systems. These facilities are expected to be connected to the national grid between March and April next year.
In addition, tenders have been invited by the Ceylon Electricity Transmission Company (CEB Transmission), with financial support from the Asian Development Bank (ADB), to obtain a further 100 MW of battery storage capacity.
The NSCC Chairman said plans are also being developed to establish battery storage systems linked to 150 MW of ground-mounted solar power projects, further strengthening the country’s renewable energy infrastructure.
According to Dr. Priyadarshana, the combined implementation of these projects will help Sri Lanka achieve its planned 750 MW battery storage capacity by the end of 2027, allowing the power system to rely less on diesel generation during periods of high demand.
He added that additional solar and wind power projects scheduled for 2028 and 2029 are also being developed, and the use of battery storage alongside these renewable energy sources would help reduce dependence on furnace oil-based electricity generation.
The initiative is expected to deliver significant financial benefits, with annual savings estimated between Rs. 30 billion and Rs. 35 billion. Dr. Priyadarshana noted that these reductions in generation costs could eventually support lower electricity tariffs for consumers.