1. PT. PLN (Persero) Puslitbang Ketenagalistrikan (Research Institute), Jl. Duren Tiga Raya No.102, Jakarta 12760, Indonesia
2. Department of Mechanical and Industrial Engineering Gadjah Mada University, Jalan Grafika No. 2, Yogyakarta 55281, Indonesia
3. Center of Energy Studies, Gadjah Mada University, Sekip K-1A Kampus UGM, Yogyakarta 55281, Indonesia
4. Faculty of Law, Gadjah Mada University, Jl. Sosio Yustisia No. 1, Bulaksumur, Kab. Sleman, D.I. Yogyakarta 55281, Indonesia
5. Center of Advanced Manufacturing and Structural Engineering, Gadjah Mada University, Jalan Grafika No. 2, Yogyakarta 55281, Indonesia