About Castlerock
Castlerock was initially founded as an energy advisory firm during the rapid expansion of the sector throughout Asia during the mid-1990s.Within a couple years, however, the Asian financial crisis crippled the sector. This boom-and-bust cycle has continued since then, and though each phase of the cycle may be triggered by different causes, no doubt it will continue in the future. Through these ups and downs we have remained trusted advisors to our clients, helping them seize opportunities and defend against threats that come with each new phase of the cycle.
This experience has taught us to focus on the fundamentals and to recognize that what today is fashionable may fall out of favor tomorrow, only to return 5 or 10 years hence. The experience and insights we have gained in this dynamic environment have shaped our principal energy sector offerings.
Depth of Services
The depth of our services creates synergies and generates insights that distinguish us from other professional advisory firms focusing on these sectors. Our experience with policy and regulatory development helps us design better projects. Conversely, our project-specific experience helps us formulate policy and strategy that is realistic, effective and implementable.
Our Business
Castlerock Consulting provides advisory services to government, state-owned & private enterprises, and commercial & development financial institutions. Our work spans formulation of high-level policy and strategy to preparation of and implementation support for capital projects in energy and other infrastructure sectors.
Our Teams
As the following pages attest, Castlerock excels using multidisciplinary approaches to help our clients succeed. This of course requires a diverse range of expertise among our people. Our personnel have backgrounds in business, finance, engineering, accounting, science, information technology as well as the liberal arts.
Regional Coverage
Our focus on Southeast Asia and the Pacific and long-term presence in this region have established us as trusted advisors to our clients. Physical proximity to our clients enables us to be more responsive to client needs, and allows us to develop and maintain long-term relationships. Most importantly, this enables us to go beyond just sharing insights with and making recommendations to our clients. We can work side-by-side with them to implement change successfully, and thereby create real value for our clients.
Our Projects Credentials
Since our establishment in 1996, we have conducted more than 100 assignments in Indonesia and throughout Asia, including high profile, multi-year assignments valued at over USD 8 million. The firm has served clients in a dozen countries throughout the Asia-Pacific region, including multilateral agencies, such as The World Bank and the Asian Development Bank (ADB), Bilateral agencies such as AFD, DFID,KfW and USAID, State-owned enterprises and Multinational corporations.
Government Investment Project Preparation including Feasibility Studies
Castlerock works with government clients to screen and prepare infrastructure investment projects for government implementation including technical, market and financial analysis.
| Project Name | Year |
|---|---|
| Project Preparation of Green Climate Fund (GCF) Funding Proposal Package. Climate Financing Facility to Support Energy Transition in Indonesia | 2025 - 2026 |
| Research Consultant for Alternative Renewable Energy Procurement Strategy for PT PLN to Accelerate Renewable Energy Deployment for Power Sector Transition | 2025 |
| Research Consultant for Technological and Operational Optimization Study to Achieve Flexible Coal-fired power generation within a Flexible Grid System in Indonesia – Green Energy Transition Indonesia (COAL FLEX) GETI 2 | 2025 |
| Decarbonizing Indonesia Through Biogas | 2025 |
| Supporting Formulation of Long and Medium Term Development Plan and Priority Investment for Energy Sector | 2023 - 2024 |
Business Strategy and Market Assessments
Castlerock has advised some of the largest energy and infrastructure companies in the world on the Indonesian renewable energy market, including opportunities, risks and entry strategies.
| Project Name | Year |
|---|---|
| ASEAN-UK Green Transition Fund Enabling ASEAN Clean Power and Resilient Grids | 2025 - 2026 |
| Research Consultant for Technological and Operational Optimization Study to Achieve Flexible Coal-fired power generation within a Flexible Grid System in Indonesia – Green Energy Transition Indonesia (COAL FLEX) GETI 2 | 2025 |
| Study on Renewable Energy Procurement in Indonesia and Reverse Auction | 2025 |
| TA-10232 REG: Advancing Just Energy Transition in Asia and the Pacific – Support for Green Energy Buyers and Investment in Indonesia | 2025 - 2026 |
| PT SMI Technical Assistance Program – AFD | 2024 |
Planning, Regulatory Support and Policy Development
Castlerock has worked with governments, multilateral lenders and regulated companies to prepare plans as well as to develop and implement energy sector policies and regulations.
| Project Name | Year |
|---|---|
| Project Preparation of Green Climate Fund (GCF) Funding Proposal Package. Climate Financing Facility to Support Energy Transition in Indonesia | 2025 - 2026 |
| Research Consultant for Alternative Renewable Energy Procurement Strategy for PT PLN to Accelerate Renewable Energy Deployment for Power Sector Transition | 2025 |
| Decarbonizing Indonesia Through Biogas | 2025 |
| APEC Bioenergy Workshop | 2021 |
| Sustainable Energy for Indonesia’s Advancing Resilience (SINAR) | 2021-2026 |
Corporate Strategy and Utility Operational Improvement
Castlerock has helped electricity companies develop business strategies, restructure their operations and improve performance.
| Project Name | Year |
|---|---|
| ASEAN-UK Green Transition Fund ASEAN Carbon Pricing Mechanism Study and Simulation | 2025 - 2026 |
| Independent Verification Agent under World Bank P-for-R Isle-1 Program | 2024 - 2027 |
| Determining the Economic Value of the Matenggeng Pumped Storage Hydroelectric Power Project through Long-Term Dispatching Analysis | 2023 |
| ADB Independent Verification Agent for RBL for Sustainable and Reliable Energy Access Program (SREAP) – Western and Central Java | 2023-2024 |
| 1,000 Islands – Renewable Energy for Electrification Programme Phase 2 | 2021-2023 |
PPP Project Preparation and Investor Support, Due Diligence and Financial Advisory Support
The firm has also assisted lenders and investors with preparation or due diligence of specific power projects.
| Project Name | Year |
|---|---|
| Decarbonizing Indonesia Through Biogas | 2025 |
| PT SMI Technical Assistance Program – AFD | 2024 |
| Indonesia Just Energy Transition Partnership (I-JETP) | 2023 |
| Sustainable Energy for Indonesia’s Advancing Resilience (SINAR) | 2021-2026 |
| Supporting Sustainable and Efficient Energy Policies and Investments in Indonesia (SSEEPI) | 2020-2022 |
Work with Castlerock
The Castlerock presently employs twenty permanent personnel and has a rich network of independent subcontractors available to provide specialist support on specific assignments. Castlerock has conducted more than 100 assignments throughout Asia ranging from small, specialized advisory assignments valued in the tens of thousands of US dollars, to complex, high-profile, multi-year undertakings valued at over USD 5 million.
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