State-owned electricity firm PT PLN plans to develop the Gunung Ungaran geothermal working area in Central ... Log in to read the story
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PLN to develop Ungaran geothermal area
![PLN Business Director for Eastern Java, Bali and Nusa Tenggara Region Djoko R. Abumanan](https://petromindo.com/media/6544/Djoko-Raharjo_web-PLN.png)
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