Staff Profile

Fabby Tumiwa
Executive Director

Fabby Tumiwa is the Executive Director of Institute for Essential Services Reform (IESR). He has been working extensively on energy and climate change issues for more than fifteen years. His expertise is in energy policy and regulation, renewable energy technology and economics and organizational development. He has been carrying out studies and analysis on energy and electricity policies in Indonesia and global level.

Fabby writes his thoughts in a number of articles in media and speaks at various  forums at national and international level. Fabby is a member of the Indonesian delegation for the International conference on climate change and provides analysis and inputs related to funding and mitigation actions. He is a member of the climate finance and international negotiation working group on the national climate change council, a member of the Indonesian Climate Change Trust Fund (ICCTF) and a member of the Sumba Iconic Island taskforce under the Ministry of Energy and Mineral Resources. Fabby was a fellow of LEAD (Cohort 12) and and Eisenhower in 2009.

Fabby can be contacted by email:

Kharina Dhewayani
Administrative and Finance Manager

Kharina Dhewayani is the Administrative and Finance Manager. Before joining with IESR, she was working as tax company auditor in Indonesian Tax Office in North Sumatera, then she moved to Germany to work as administration staff at AWO in Duisburg, North Rhein Westfallen. After that, she was back to Indonesia and joined with the NGO International with the responsibility of auditing and budget monitoring for more than 35 local NGOs around Sumatra.

She holds a Diploma degree from Sekolah Tinggi Akuntansi Negara (STAN) majoring in Indonesia Taxes Law, a Bachelor degree from University of Sumatra Utara majoring in Economic Accounting and a Master degree from University of Mercu Buana, Jakarta.

Kharina can be contacted by email:

Gandabhaskara Saputra
Communication Coordinator

Ganda is in-charged of our Communication Strategy, Coordinating the Institute’s visibility in a broader sense. Prior to his arrival with IESR, Ganda has 10 years of professional experience in the field of communication, social media public and community relations, Sound experiences in NPO Governmental, INGOs and NGO, and the ability of using modern technology for communication. Ganda’s experienced is including to work with the US Embassy in Jakarta, EU In Indonesia Delegation, and Green School Bali.  

He can be contacted by email:

Erina Mursanti
Associate Senior Researcher

Erina is the Associate Senior Researcher. She firstly joined with IESR in Januari 2008 as the program officer for the access to energy and climate change. She had been actively involved in some research and developing networking with CSOs and practitioners in energy and climate change.

Erina graduated from University of Indonesia Faculty of Economics and continued her study in major of sustainable resource management and took a Master degree from Technische Universität München (TUM), Munich, Germany. During her study she also involved in some research of her university and worked in Ethiopia to deepening her knowledge in natural resource management.

Erina can be contacted by email:

Marlistya Citraningrum
Program Manager – Sustainable Energy Partnership

Marlistya Citraningrum is currently IESR’s Program Manager for Sustainable Energy Partnership. Citra, as she is usually called, manages partnership with diverse ministries and government agencies, civil society organizations, association, communities, as well as general public in promoting Indonesia’s transition towards cleaner, more inclusive, and more sustainable energy system. She also performs research and other advocacy activities on energy and gender issues, energy decentralization, and SDGs. Since 2017, Citra is heavily involved in Indonesian Solar Association (ISA), of which IESR is one of its founding members. One of her work with Energy Innovation, WRI, and WRI Indonesia: Energy Policy Simulator (EPS), has been recognized as finalist in Fast Company’s Second Annual World Changing Ideas – an awarding platform for policies, projects, and concepts offering innovative solutions to global challenges.

Prior to joining IESR in June 2016, Citra works in community development sectors, in which she gained comprehensive experience on behavioural assessment, facilitation, monitoring and evaluation, and multistakeholders engagement.

She holds a PhD from Taiwan Tech with research focus on environmental management. She particularly likes the use of storytelling in research, giving backgrounds and meanings to present hard evidences.

Citra can be contacted by email :

Jannata Giwangkara
Program Manager-Sustainable Energy Transition

Jannata Giwangkara is the Program Manager for Sustainable Energy Transition. He has seven years of experience working in climate change, energy, and environment issues.

Before joining with IESR in 2017, Egi – his nickname, previously worked as Low Emission Development Strategy (LEDS) Coordinator at Indonesia Clean Energy Development (ICED) Project USAID. Furthermore, He has also been worked as an individual consultant at UNDP Market Transformation through Design and Implementation of Appropriate Mitigation Actions in the Energy Sector (MTRE3) Project as well as GIZ Policy Advice for Environmental and Climate Change (PAKLIM).

His professional career began in the fourth year of his undergraduate studies in Bogor Agricultural Institute as an apprentice at the Indonesia National Council on Climate Change (DNPI). Egi’s contribution to DNPI continued until June 2014 before he joined the USAID ICED Project. In 2016, Egi was awarded a New Zealand ASEAN Scholarship to undertake a postgraduate study at the University of Auckland. His Master of Energy focused on the energy, sustainability and environment studies.  In addition to the career, Egi is also a lecturer at Podomoro University.

Egi can be contacted by email :

Pamela Simamora
Renewable Energy Power System Specialist

Pamela is the Renewable Energy/Power System Specialist. Her work revolves around generation, transmission, and storage technology assessments, power system and grid modeling, and grid integration study that would help prepare the state-owned utility in Indonesia (PLN) for integrating more renewables into the national grid.

Pamela is an experienced professional in the energy sector. She started her career as an engineer in a multinational oil & gas engineering company for more than two years before deciding to leave the industry as she learned about climate change. She also has experience in conducting a study of State Energy Plans in the United States. Her current interests include increasing the deployment of renewable energy and public awareness of climate change in Indonesia.

She holds a Bachelor of Science in Electrical Engineering from Bandung Institute of Technology and a Master of Engineering in Energy, Environmental & Chemical Engineering from Washington University, where she learned about renewable energy technologies such as solar PV and wind turbines. In her spare time, she loves to read books and get involved in volunteering activities.

Pamela can be contacted by email:

Assistant Administration Officer

Saidah joined with IESR 2012 as the Assistant Administration Officer. She is responsible in managing the financial and administration system. The mother with three children completed her high education in 1995 and initiated her career as sales representative in several food and clothing companies.

She can be contacted by email: