ECONOMYNEXT – Sri Lanka will allow scheduled power cut to save water in hydro reservoirs and also allow power consumers to plan their activities, the island’s power regulator said, as water levels plunged in key reservoirs.
The Public Utilities Commission of Sri Lanka will publish a schedule of power cuts based on a formula which assess available generation capacity, water and fuel in advance, he said.
“Today we hope to publish a schedule of power cuts which will allow consumers to plan their activities,” PUCSL Chairman Janaka Ratnayake said.
Water storage in reservoirs are now below 50 percent and to conserve water for March and April generation will have to be reduce from now, he said.
Sri Lanka’s state-run Ceylon Electricity Board has sought permission to impose short power cuts from now on to avoid larger power cuts in March and April especially if inter-monsoonal rains are delayed.
Though 2021 was one of the best years for hydro storage, which came close to 1,200 GigaWatt hours by November, a coal plant outage in forced the utility to use extra water to avoid power cuts as forex shortages reduced the availability of liquid fuel.
Sri Lanka started printing money to keep interest rates down from February 2020 to create a ‘production economy’ blowing the balance of payments apart.
The CEB sought to impose power cuts after the coal plant outage as liquid fuel was not available due to forex shortages stop the problem from snowballing.
By February 2022, storage had fallen below 600 GigWatt hours, the same as 2019, a power cut year, compared to a little under 900 GWh in 2021.
Now the power system is faced with mutliple complications, industry watchers say. Castlereigh and Moussakelle in the upper reaches of the Kelani River is expected to run dry endangering water supply to Colombo.
Key frequency response reservoirs, Kotmale and Victoria are also below 50 percent and Kotmale is expected to be taken out to save water for the next cultivation season, leaving the utility without a generator to ensure power at 50 cycle (frequency response power plant).
Meanwhile with Samanalawewa running dry, the Southern grid would also face outages as the area was served by a 132kV section of the grid which had few generators and the interconnection with the 220kV system was weak.
Sri Lanka’s power demand which was muted during the Coronavirus pandemic had picked up amid an economic recovery. (Colombo/Feb15/2022)