Director
Dr. I Putu Sutrisna is a seasoned expert in climate change mitigation and energy transition, with over three decades of experience in clean technology development, carbon pricing, and energy planning. He holds a Doctorate in Chemical Engineering from the Tokyo University of Agriculture and Technology and has significantly contributed to Indonesia’s sustainability progress.
As Director of CBS Engineering & Consulting, Dr. Putu leads strategic initiatives in renewable energy, industrial decarbonization, and policy advisory. His leadership has been critical in the planning and development of key energy projects, including the 10 MW Cibuni Geothermal Power Plant, the 2.4 MWe Kundur Biomass Power Plant, and various solar PV projects. Recognized for his expertise in gasification and solid fuel conversion technologies, he has played a key role in advancing Indonesia’s clean energy transition.
Dr. Putu has also contributed to strategic studies on MRV of greenhouse gases, carbon pricing mechanisms, long-term decarbonization planning, climate mitigation strategies, and waste-to-resource solutions. Previously, he served at the Agency for the Assessment and Application of Technology (BPPT), where he spent over a decade specializing in energy resource assessment, energy conservation, and clean energy deployment. His expertise has supported key government ministries, including the Ministry of Energy and Mineral Resources (MEMR), Ministry of National Development Planning (Bappenas), Ministry of Environment and Forestry (MoEF), Ministry of Industry (MoI), and Ministry of Finance (MoF), in shaping Indonesia’s renewable energy and energy efficiency policies.
Beyond his professional practice, Dr. Putu is a respected academic and advisor, with publications in international journals on energy and fuel processing technologies. He has led projects funded by global institutions, including UNDP, Southeast Asia Energy Transition Partnership (UNOPS), GGGI, NEDO, and JICA, defining his influence in Indonesia’s energy transition.
Deputy Director
Made Santihayu Sukma (Santi) is a sustainable energy specialist with expertise in bioenergy, carbon capture, and chemical looping. She holds a Ph.D. from the University of Cambridge, specializing in advanced carbon capture technologies, and an M.Sc. in Advanced Chemical Engineering from Imperial College London.
Her work spans bioenergy and carbon capture technologies, including biogas reactors, gasification, waste-to-energy systems, and chemical looping processes. With a strong background in advanced chemical engineering, she has collaborated with national and international experts to drive innovation and optimize sustainable energy solutions.
As Deputy Director at CBS Engineering & Consulting, Santi leads initiatives in renewable energy and climate mitigation, particularly in bioenergy development and industrial decarbonization. She has contributed to strategic studies on GHG measurement, reporting, and verification (MRV), decarbonization roadmaps, and waste-to-resource solutions, supporting policy frameworks and technology deployment.
Beyond her technical expertise, Santi is actively involved in capacity building, training government officials on energy sector policies and institutional frameworks. She combines academic excellence with hands-on project leadership, playing a key role in advancing sustainable energy transitions in Indonesia and beyond.
Executive Secretary
Primisita Sutopo (Sita) is a renewable energy and climate finance specialist with over 15 years of experience in investment planning, financial evaluation, risk management, and energy policy analysis. She holds a Bachelor’s degree in Chemical Engineering from Universitas Diponegoro and a Master’s degree in Accounting from the University of Indonesia, providing her with both technical and financial expertise. She has contributed to Indonesia’s energy transition through feasibility assessments, climate mitigation planning, and renewable energy investment advisory.
Sita has led key initiatives, including the investment strategy for the Indonesia Quality Tourism Fund, MRV systems for renewable energy and energy efficiency, and GHG targets for industrial sectors under UNDP. She has also coordinated studies on GHG inventory, marginal abatement cost curves (MACC), and investment guidelines, ensuring policies and projects are both technically sound and economically viable.
Her extensive collaboration with government agencies, private companies, international organizations, and financial institutions has strengthened her role in Indonesia’s climate and energy transition. She has designed capacity-building programs on GHG inventory, MRV systems, and climate investments, equipping stakeholders with the knowledge to implement effective decarbonization strategies.
In addition to her role as a consultant, Sita serves as the Executive Secretary of the company, overseeing corporate administration, financial management, and operational coordination.
International Expert
Mark Greenwood is an international expert in sustainability and systems analysis, with a strong background in biology, biochemistry, and research-driven innovation. His expertise lies in understanding complex biological systems and applying scientific insights to sustainable development, resource efficiency, and emerging clean energy solutions.
With a Ph.D. from the University of Cambridge, Mark has explored how natural systems regulate themselves and adapt to environmental changes. His research on cellular interactions and biological timekeeping has broader implications for optimizing growth strategies and resource management in agriculture and sustainable production. He holds a bachelor’s degree in Genetics and a master’s in Molecular Biology from the University of Liverpool, where he developed expertise in genetic engineering, synthetic biology, and biochemical pathways.
Beyond academia, Mark has engaged in interdisciplinary research spanning genetics, synthetic biology, and engineering. His expertise in biochemistry and cellular systems plays a crucial role in advancing next-generation biofuels, particularly third- and fourth-generation alternatives derived from algae, engineered microorganisms, and synthetic pathways. With a strong analytical approach and a commitment to innovation, he supports CBS in international collaboration, knowledge exchange, and advancing sustainable solutions.
Senior Associate
I Komang Arimbawa Somantri (Komang) is an experienced engineer specializing in power plant development, with expertise in feasibility studies and front-end engineering design (FEED) for lignite and biomass gasification, geothermal, and solar photovoltaic projects. His work spans site assessment, mechanical and structural design, and energy performance analysis.
With a strong technical foundation, he has been involved in site investigations and spatial analyses to support power plant planning and optimization. His role includes designing plant layouts that integrate technical, safety, and operational considerations, ensuring efficient equipment placement, accessibility, and long-term maintainability.
Beyond power generation, Komang has also contributed to waste management projects, mainly recycling facilities, applying his engineering expertise to improve infrastructure efficiency and sustainability. With a decade of experience, he brings practical insights that enhance project feasibility, structural integrity, and operational performance.
Deputy Director
Aji Setyawan is a climate change mitigation and sustainability specialist with a strong foundation in engineering and policy. Holding a degree in Engineering Physics (Institut Teknologi Bandung), he brings a multidisciplinary approach to solving complex energy and environmental challenges. With over a decade of experience, Aji has played a key role in bridging technical, economic, and policy aspects to advance renewable energy, energy efficiency, and low-carbon development. He has worked extensively with government agencies, private sector players, and international development organizations to design and implement effective climate and energy solutions.
His expertise spans feasibility studies, emissions reduction strategies, investment roadmaps, and regulatory frameworks. He has tailored solutions that integrate technical feasibility with policy frameworks and real-world implementation, ensuring that interventions are both practical and scalable. His ability to translate technical insights into actionable strategies has played a pivotal role in supporting energy transition policies and climate resilience initiatives.
Aji has also been deeply involved in stakeholder engagement, strengthening partnerships between policymakers, industries, and financiers. Beyond technical work, he has led capacity-building programs, developed training materials, and facilitated knowledge-sharing initiatives to strengthen institutional capabilities.
With a background connecting technical expertise with policy development, Aji is committed to delivering data-driven solutions that integrate sustainability, innovation, and systemic impact.
Head of Sustainability
Ummu Sulaim Arrumaisho (Arrum) has over nine years of experience in renewable energy and climate change projects, specializing in policy assessment, financial analysis, and climate change mitigation. With a background in mechanical engineering and an MBA in sustainable energy business (Institut Teknologi Bandung), she integrates technical and financial perspectives to support low-carbon and socially inclusive development.
She has extensive experience in climate finance, having supported the assessment of the Indonesian Environment Fund’s role in the carbon market and contributed to the development of investment guidelines for renewable energy and energy efficiency. She has also worked on the development of the Marginal Abatement Cost Curve (MACC) to inform energy planning at the provincial level, helping decision makers evaluate cost-effective decarbonization strategies.
In addition to her expertise in finance and investment, Arrum has contributed to gender equality in climate action. As a gender specialist for Indonesia’s Net-Zero & Nature-Positive (NZNP) project development, she conducted a gender analysis and developed a gender action plan to integrate gender, disability and social inclusion (GEDSI) principles into climate interventions. She also collected gender-specific data for the Just Transition Study, which assessed the gendered impacts of early retirement of coal-fired power plants on supply chains and local communities.
Her work involves close coordination with government agencies, state-owned enterprises, and private entities at the national and provincial levels, giving her a deep understanding of Indonesia’s institutional landscape for climate and energy transition.
Senior Associate
Muhamad Abdurachman Saleh (Abel) is an energy transition specialist with expertise in industrial decarbonization, energy efficiency, and carbon pricing. With a background in physics from Institut Teknologi Bandung and a master’s degree from the University of Bonn, he brings strong analytical skills that shape his approach to sustainability consulting.
He has contributed to the development of long-term greenhouse gas (GHG) targets and action plans for industrial sectors, evaluating emission reduction pathways and aligning sectoral strategies with regulatory frameworks. His work includes techno-economic assessments of industrial energy efficiency measures, low carbon fuels, feedstocks, and energy sources (LCFFES), and the integration of carbon capture solutions, using marginal abatement cost curve (MACC) analysis to evaluate decarbonization pathways.
Abel has been involved in studies on the impact of the Carbon Border Adjustment Mechanism (CBAM) on Indonesian industry, analyzing cost impacts, trade competitiveness, and compliance strategies. His insights help policymakers and businesses navigate evolving carbon regulations and strengthen the resilience of Indonesia’s export-oriented sectors.
In addition to technical expertise, he specializes in stakeholder engagement, working with policymakers and industry leaders to develop and implement effective decarbonization strategies.
Senior Associate
Rakhmawati Nabila (Rakhma) is a specialist in industrial decarbonization, biomass utilization, and social-environmental safeguards, with a background in chemical engineering (Institut Teknologi Bandung) and advanced energy systems (University of Science and Technology, South Korea). Her research focuses on biomass thermochemical conversion and Life Cycle Assessment, including sustainable catalysts for methane synthesis, biochar for adsorbents & carbon sequestration, and biomass co-firing.
She has contributed to developing greenhouse gas (GHG) long-term targets and action plans for industry sectors, evaluating emission reduction pathways, and integrating biomass-based solutions into energy transition strategies. Her work includes assessing sectoral decarbonization challenges, identifying opportunities for low-carbon technologies, and supporting policy frameworks that drive sustainable industry practices.
She has demonstrated expertise in social and environmental safeguards through her contributions to Indonesia’s Net-Zero & Nature-Positive (NZNP) Project, ensuring sustainability is integrated into project interventions and risk mitigation measures by preparing the Social Environmental Screening Procedure (SESP) and Environmental and Social Management Framework (ESMF).
With expertise in project design, monitoring, and reporting, she connects technical research with policy-driven approaches to advance sustainable energy solutions. Her ability to navigate diverse technical and policy landscapes enables effective collaboration with stakeholders across sectors.
Junior Associate
Rahmat Fajri (Fajar) has four years of experience in renewable energy and climate change mitigation, specializing in solar PV development and industrial decarbonization analysis. Holding a degree in Mechanical Engineering from Institut Teknologi Bandung, he has worked on various solar PV projects, including utility-scale, commercial and industrial (C&I), and floating solar PV systems. His expertise includes feasibility studies, system design, energy performance assessment, and grid integration.
He also has experience in industrial decarbonization, contributing to greenhouse gas inventories, carbon pricing mechanisms, and energy transition strategies. His work includes developing MRV systems for emissions reductions, analyzing decarbonization pathways for industries, and assessing the cost implications.
With strong data analysis, modeling, visualization, and reporting skills, he ensures that complex energy and climate data are effectively structured for decision-making. His ability to translate technical findings into clear insights supports policy development and project implementation in renewable energy and industrial decarbonization.
Junior Associate
Nabila Zahara Salsabila specializes in renewable energy and climate change mitigation, with a focus on biomass energy, biofuels, and decarbonization strategies. With a background in Bioenergy and Chemurgy Engineering (Institut Teknologi Bandung), she has worked on projects ranging from biomass power plant implementation to developing strategic roadmaps for bioethanol deployment in Indonesia. She has also contributed to climate change mitigation studies, including Marginal Abatement Cost Curve (MACC) analysis for industrial decarbonization measures.
Nabila has experience in supporting policy development, including her role as Communication Specialist for National Policy Development and Mainstreaming of Forest Bioeconomy in Indonesia, aligned with the National Medium Term Development Plan (RPJMN) 2025-2029. She has worked closely with various institutions, facilitating collaboration between the public and private sectors.
With strong expertise in project management, stakeholder engagement, and data analysis, Nabila brings a structured and results-oriented approach to energy and climate initiatives.
Junior Associate
Adhisya Salma Khairunnisa (Chacha) is a professional in energy transition and climate change mitigation, focusing on industrial decarbonization, greenhouse gas (GHG) emission calculations, and sustainable energy strategies. With an academic background in Bioenergy and Chemurgical Engineering from the Institut Teknologi Bandung, she has expertise in developing emission reduction pathways and analyzing the Marginal Abatement Cost Curve (MACC) for industries and the building sector.
Her experience includes projects on developing low-carbon transition pathways for the national pulp and paper as well as aluminum sectors. She is also involved in preparing technical guidelines for green investment in the sustainable tourism sector and conducting studies on green energy, particularly in green hydrogen development for the Net-Zero Nature-Positive (NZNP) project in Indonesia. Additionally, Adhisya has expertise in assessing social and environmental impacts for renewable energy projects, including supporting the preparation of Social and Environmental Screening Procedures (SESP) in the NZNP project.
With a data-driven approach and in-depth technical analysis, Chacha is committed to driving real action in climate change mitigation and accelerating the energy transition in Indonesia.
Junior Associate
Athaya Nadira specializes in greenhouse gas (GHG) accounting and climate change mitigation, with a focus on emissions measurement and industrial decarbonization strategies. With a background in bioenergy engineering and chemurgy (InstitutTeknologi Bandung), she has worked on projects related to climate change mitigation studies, including developing emissions reduction pathways and Marginal Abatement Cost Curve (MACC) analysis for industrial decarbonization measures.
Her expertise extends to evaluating mitigation options based on their environmental and social implications. Athaya has experience in supporting the preparation of Social and Environmental Screening Procedures (SESP) and the Environmental and Social Management Framework (ESMF) for Indonesia’s Net-Zero Nature-Positive (NZNP) project, ensuring that climate interventions are designed with robust safeguards and inclusive sustainability measures.
With a technical and data-driven approach, Athaya seeks to drive impactful climate action and energy transitions in Indonesia.
Junior Associate
Dewa Gde Weda Krishna Ditha Rasanji (Weda) holds a bachelor’s and master’s degree in Inorganic Chemistry from Universitas Indonesia, specializing in sustainable materials. With a strong background in research and data analysis, he supports climate and sustainability studies, particularly in greenhouse gas (GHG) inventory and decarbonization strategies.
At CBS, Weda plays a key role in extracting, organizing and analyzing data from scientific literature, reports and technical studies to support climate change mitigation efforts. His work includes compiling structured data, preparing reports and presentations, and supporting research activities that contribute to evidence-based decision making.
With his expertise in data processing and environmental analysis, Weda supports CBS in providing robust and informed technical solutions for emissions reduction and sustainability planning.
