Electricity Condition
Almost all of North
Sumatera electricity need (99,9%) is supplied by Sumatera Power Distribution and Transmission
Center (SPDTC) through
150 kV transmission network, and the rest by isolated system power plants in Pulau Nias,
Tello, and
Sembilan managed by North Sumatera Region of State Electricity Enterprise. In 2011 peak
utilization in North Sumatera System was 1,253.52 MW.
Total installed capacity of power
plants in North Sumatera up to 2011 was 2,066.10 MW consisting of Steam Power Plants for 520 MW, Gas
Power Plants for 223,29 MW, Steam and Gas Power Plants for 214.89 MW, Diesel Power Plants for 158.42 MW, Hydro Power Plants for 922.50 MW,
Mini Hydro Power Plants for 15 MW, and
Thermal Power Plants for 12 MW. Total electricity sale for North Sumatera in 2011 was 7,194 GWh.
Energy Potentials
North Sumatera has diversified energy
potentials for power plants consisting of hydro, thermal, oil, natural gas, and coal. Hydro
power potentials are estimated to reach 1,241.5 MW, scattered in 14 locations namely Kumbih-3, Simanggo-2,
Raisan-1, Toru-2, Toru-3, Sibudong-4, Ordi-3, Ordi-5, Bila-2, Siria, Wampu,
Lake Toba, Asahan-3, and
Asahan-4-5. Thermal power potentials are estimated to
reach 3,237 MWe, scattered
in 16 locations namely Beras, Lau Debuk-Debuk/Sibayak, Marike, Dolok Marawa, Pusuk
Bukit–Danau Toba, Simbolon–Samosir, Pagaran, Helatoba, Sipaholon, Sarula,
Sibual buali, Namora Ilangit, Sibubuhan, S Merapi–Sampuraga,
and Sampuraga
Roburan. Oil potentials are estimated to reach 110.85 MMSTB, natural gas
1.29 TSCF, and
coal 26.97 million tonnes.
Electricity Demand Estimate
It is
projected that demand
for electricity in North Sumatera for the period 2012–2031 shall grow
by 1.1% per year so that in 2031 electricity need is expected to reached 130.0 TWh. To fulfill estimated peak utilization growth of averagely around 15.6% per year until 2031, then additional power
of averagely around 1,495 MW per year shall be needed. 
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