Controlled release of water from Bakun HEP reservoir from Oct 24

KUCHING: Sarawak Energy (SEB) has announced the commencement of its seasonal controlled release of water from the reservoir of the 2,520MW Bakun Hydroelectric Plant (HEP) from Oct 24 to Nov 13.

According to the press release issued by SEB, Tuesday (Oct 22), seasonal release of water is part of the hydropower operator’s annual standard practice to manage and regulate water levels upstream and downstream of the facility.

“This resulted in improved water level management both upstream and downstream, supporting river navigation during the dry seasons where relevant and flood mitigation during rainy periods.

“Since the commissioning of Bakun HEP, the severity of downstream flooding for the Rajang River has been minimised.

“During this period, there will be a rise in river levels downstream of Bakun HEP. The volume of water released will be carefully managed to minimise downstream impact.”

SEB also advised that residents of these area to exercise caution as water levels and currents may be affected.

Besides, SEB continues to utilise its dynamic water dispatch management system, implemented in 2020, to enhance reservoir level management.

“This system integrates weather and inflow forecasts, allowing for more accurate modelling of water releases and predictive weather patterns, providing forecasts for reservoir levels up to six months in advance.

“This system is currently employed at Sarawak Energy’s three hydroelectric plants which are Batang Ai, Murum, and Bakun.

“All hydropower facilities operated by Sarawak Energy are guided by the International Commission on Large Dams (ICOLD) and the Hydropower Sustainability Standard (HSS).”

For the records, the relevant communities are notified through public notices and social media at least two days ahead of the scheduled release.

“In compliance with the Sarawak Rivers Board’s requirements, SEG has secured the necessary approvals from the relevant authorities prior to this controlled release.”