Dec 19, Colombo: Sri Lanka's Ministry of Power and Energy has decided to close two tunnels used for hydropower generation for two weeks in January for maintenance.
The closure of tunnels can affect the power generation and the Minister of Power and Energy Pavithra Wanniarachchi said that steps would be taken to minimize the effect on the daily life of the public.
However, currently the thermal power contributes over 53 percent of the daily energy need and the hydropower contribution has dropped to 45 percent.
Polgolla tunnel and the New Lakshapana Tunnel will be closed for maintenance. Polgolla tunnel has not been serviced since 1986 while New Lakshapana has not been inspected since 1975.
Polgolla dam diverts water from River Mahaweli in the central hills to North Central Province while the New Lakshapana tunnel takes water to one of the power houses fed by Lakshapana reservoir.