COLOMBO – Sri Lanka’s state-run Ceylon Electricity Board (CEB), had tendered for 200MW/200MWh battery energy systems (BESS), to upgrade its grid to accommodate more intermittent renewables.
The BESS facilities will be paid for by an Asian Development Bank (ADB) credit.
The ADB had previously given a 150-million-dollar credit to augment the grid to accommodate more renewable power.
The battery systems will be set up at the Kolonnawa grid substation.
The CEB floated two tenders of 100MW/100MW each.
Since renewable power – other than large hydros – are intermittent, large investments have to be made in the grid, outside of visible costs of solar or wind plants to stop cascading failures in the grid from voltage changes.
Battery systems can respond very fast to changes in demand or supply.
The CEB has separately called bids for 160MW/640MWh BESS as a private build own operate project on a 15-year concession, which would take the total battery capacity to 360MW/840MWh.
The CEB is also planning a pump storage plant, which has a long-life running decades at a time like large hydros which can store power across time by pumping water up in two dams in a cascade.
-economynext.com
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