Sarawak Electricity Supply Corporation (SESCO) and now known as Syarikat SESCO Berhad was privatized on 1 July 2005. It is responsible for the generation, transmission and distribution of electricity for Sarawak state in Malaysia.

SESCO provides electricity to about 382 000 customers. Over the last four years, sales of electrical grew at an average of 8 per cent per annum. SESCO has slightly over 2000 employees.

It is owned 51.6 % by the Sarawak State Government and 45 % by the Sarawak Enterprise Corporation Berhad (SECB)