Electricity system of Central Java constitutes part of Java-Bali interconnection system.
Other than the main electricity supply from 500 kV and 150 kV transmission systems, electricity need of Central Java is supplied by Steam Power Plants/Steam and Gas Power Plants in Tambaklorok,
Hydro Power Plants in Mrica, Steam Power Plants in Cilacap, and
Thermal Power Plants in Dieng. Peak utilization in 2011 reached 2,677.80 MW.
Total
installed capacity of power plants in Central Java up to 2011 was 5,213.92 MW,
consisting of Steam
Power Plants 3,675 MW, Gas Power Plants 135.26 MW, Steam and Gas Power Plants 1,033.90 MW, Hydro Power Plants 306.82 MW, Mini Hydro
Power Plants 2.80 MW, Micro Hydro Power Plants 0.14 MW, and Thermal Power Plants 60 MW. Total
electricity sale for Central Java in 2011 was 15,316 GWh.
Energy Potentials
Central Java is estimated to have 360 MW hydro power potentials in Maung. 1,981 MWe thermal power
potentials are also estimated, scattered
in 14 locations namely Banyugaram, Bumiayu, Baturaden-G Slamet, Guci, Mangunan–Wanayasa,
Candradimuka, Dieng,
Krakal, Panulisan, G Ungaran, G Umbul –Telomoyo,
Kuwuk, G Lawu, and Klepu. Coal potentials are estimated for 0.82
million tonnes.
Electricity Demand Estimate
It is projected
that demand for electricity
in Central Java for the period
2012-2031 shall grow averagely by 8.2% per year so that in 2031 electricity
need is expected to reach 73.0 TWh.
To fulfill peak utilization growth of averagely
around 7.9% per year until 2031, then additional power of averagely
around 732 MW per year shall be needed.
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