Section 12(b) in Bihar Electricity Regulatory Commission (Standards of Performance of Distribution Licensee) Regulations, 2006
(b)Frequency variation. - The frequency variation shall be governed by the Indian Electricity Grid Code (IEGC)/State Grid Code. IEGC stipulates operating frequency range between 49.0 Hz and 50.5 Hz.The transmission utility, transmission Licensee and the State load despatch centre shall jointly maintain the operating frequency between 49.0 and 50.5 Hz. The distribution Licensee shall co-operate with the State load despatch centre and the transmission utility/transmission Licensee by reducing load whenever requisitioned.
