– Madakkathara line Tirunelveli – Trivandrum line Mysore – Kozhikode (Areekode) line Tirunelveli - Kochi line A 2000 MW HVDC Station has commissioned by Power Grid Corporation of India Ltd. at Madakkathara as part of Raigarh-Pugalur-Thrissur HVDC Project. This is the first HVDC Project in Kerala and the fourth project in South India after Kolar, Vizag and Pugalur. The project was inaugurated by Prime Minister Narendra Modi in February 2021. There are 6 major inter-state transmission lines at 220 kV level and 110 kV level. The 220 kV lines are: Kaniyampetta – Kadakola (single circuit) Idukki – Udumalpet (single circuit) Sabarigiri – Theni (single circuit) Edamon – Tirunelveli (double circuit) The 110 kV lines are: Parassala – Kuzhithura and Manjeswaram – Konake. The major substations include five 400 kV substations, and 17 220 kV substations. The main grid comprises the 220 kV systems. The transmission sector of KSEB comprises two zones namely North and South. The State Load Dispatch Centre (SLDC) located at Kalamassery. 400 kV substations at Pallipuram – Thiruvananthapuram, Pallikkara – Kochi, Palakkad, and Kozhikode are owned by PGCIL, while 400 kV substation at Madakkathara, Thrissur, is owned by KSEB. 400 kV substation, Madakkathara is the first 400 kV substation in Kerala. Distribution KSEB Ltd distributes electricity in the State of Kerala except in the administrative region of Thrissur Municipal Corporation and Munnar (Kannan Devan Hills). For operational conveniences the distribution wing is divided into four zones: South, Central, North and North Malabar. Electricity tariff Kerala State Electricity Board tariff consists of different components. The charges levied on consumers include fixed charges, meter rent, energy charges, fuel surcharges, electricity duty and applicable local taxes. KSEB follows a slab system in which a consumer using up to 250 units per month will have a telescopic tariff. This means that the first 50 units will be charged at a lower rate, with the rates increasing progressively for subsequent 50 units. After 250 units, the billing will be "non-telescopic", which means the slab rate will be applicable for the entire electricity consumed. The following table shows the electricity tariff for domestic consumers Tariff for monthly consumption (up to 250 units) For three-phase customers having a monthly consumption up to 100 units, the fixed charges are set as Rs 90 and Rs 100 for up to 250 units. Tariff for monthly consumption (above 250 units) For three-phase customers the fixed charges are