The request is strongly aligned with five system transformation areas such as water-energy-food nexus, energy systems, and business and industry and with one of the two enablers, national systems of innovation.

The request is strongly aligned with all five key themes of Technology Framework of the Paris Agreement such as innovation, implementation, Enabling Environment and Capacity-Building, Collaboration and Stakeholder Engagement and Support.

Indonesia is neither a Least Developed Country (LDC) nor a Small Island Developing State (SIDS).
Furthermore, Indonesia has received CTCN technical assistance within the last five years, including the completed project "Identification of technical practices for climate-smart agriculture (CSA) in Indonesia", completed in 2024.

The request combines climate change adaptation and mitigation objectives, with potential to contribute to CTCN's portfolio across both climate objectives. Developing a technically feasible, safe, economically viable and community-based integrated renewable energy and green hydrogen model for Karimunjawa that utilizes excess solar electricity to strengthen energy security, reduce diesel consumption, support sustainable fisheries, improve clean-water access and enhance climate resilience of fishing communities. Such integration could reduce fossil fuel consumption and associated greenhouse gas emissions while simultaneously improving energy security, water security, fish preservation, productive economic activities and climate resilience of the local community.

The proposed technical assistance will establish a time-series integrated energy model to quantify actual excess renewable electricity and determine the optimal electrolyzer capacity and operating strategy. The existing diesel generator will be assessed as a hydrogen-utilization pathway through Diesel Dual Fuel (DDF), rather than as a renewable-energy source. The assessment will also integrate productive electricity applications, including cold storage, ice production, fish processing and desalination. This baseline-to-assessment approach will provide the technical basis for a safe, economically viable and replicable PV-BESS–Green Hydrogen–DDF system for small-island communities.
The primary demonstration area is the main island of Karimunjawa, where the PLN-operated PLTD Legon Bajak (2 × 2.2 MW) provides the main dispatchable electricity supply. The technical assistance will focus on the integration of the existing PV-BESS system, excess renewable electricity, green hydrogen production, and hydrogen utilization through Diesel Dual Fuel (DDF) with the existing electricity infrastructure. The broader Karimunjawa island group will also be considered as a potential replication area, particularly Parang, Genting, and Nyamuk Islands, where PLN operates renewable-energy-based electricity systems.

The request proposes international collaboration through technical and R&D partnerships with institutions in Korea such as Korea Institute of Science and Technology (KIST), KRICT (Korea Research Institute of Chemical Research), and KIER (Korea Institute of Energy Research) who hosted 2026 CTCN learning visit on green hydrogen and fuel cell and ASEAN/regional partners.

The request was initiated through a technical development process led by the Request Applicant, Research Center for Energy Conversion Technology - BRIN, in collaboration with relevant national stakeholders to identify a practical climate-technology intervention for fishing communities in Karimunjawa. The initial concept emerged from the need to improve renewable-energy utilization, reduce dependence on diesel fuel, strengthen energy and water resilience, and support productive fisheries activities through an integrated PV-BESS, green hydrogen, DDF, cold-chain and desalination system.
During the development process, the concept was progressively refined from a technology-deployment approach into an applied R&D and technical-assistance request, consistent with the CTCN mandate and its focus on technology assessment, system integration, capacity building and preparation for subsequent implementation. The technical discussions specifically examined the existing PLN PV-BESS context, excess renewable electricity utilization, electrolyzer technology options (PEMEL, AEM and SOEC), hydrogen storage, DDF integration with the existing diesel generator, cold storage and ice
production, fish processing, desalination, and local capacity requirements.
Key stakeholders considered in developing the request include BRIN as the technical/R&D lead; PLN as the owner/operator of the existing PV-BESS energy infrastructure; relevant national and local government institutions for policy and community coordination; local fishing communities as the end users and beneficiaries; and potential research and technology partners from Korea and ASEAN/regional institutions. Their respective inputs were used to ensure that the proposed assistance addresses technical feasibility, community needs, institutional requirements and future replication.
The request was subsequently discussed and refined through stakeholder consultations and technical exchanges, with particular attention to defining the technology barriers, scope of technical assistance, expected outputs and potential follow-up financing. The final submission will be formally endorsed and signed by the Indonesian NDE, in accordance with the CTCN request process.

The technical assistance will adopt an inclusive community-based approach with targeted participation of women, youth and fishing households. Women will be actively involved particularly in fish processing, product development, entrepreneurship, cooperative management and financial literacy activities, while youth participation will be promoted in renewable energy, digital monitoring, hydrogen technology and technical operation and maintenance.
Expected co-benefits include reduced diesel consumption and emissions, improved fish preservation, reduced post-harvest losses, increased value addition of fisheries products, new local business opportunities, improved access to clean water, enhanced technical skills, youth employment opportunities and strengthened community resilience.

The request is aligned with the CTCN Third Programme of Work 2023–2027, particularly the Buildings and Infrastructure system transformation area, through its focus on climate-resilient coastal protection and nature-based restoration solutions.
Its primary key enabler is National Systems of Innovation, as the assistance seeks to strengthen national technical capacities, institutional coordination, restoration design standards, technology transfer and local demonstration. Digitalization provides a complementary enabler through geospatial screening, remote sensing, UAV-based monitoring and digital MRV tools.
The request also contributes to the Programme of Work's cross-sectoral priorities of gender and social inclusion and promotes practical technology adaptation, capacity building and investment readiness.

The request is aligned with the Technology Framework under Article 10 of the Paris Agreement, particularly the themes of Innovation; Implementation; Enabling Environment and Capacity-building; Collaboration and Stakeholder Engagement; and Support.
It seeks to transfer and adapt relevant tidal-flat restoration technologies to Indonesia's local conditions, demonstrate selected restoration approaches, strengthen institutional and technical capacities, and develop enabling policy, regulatory and MRV frameworks.
The proposed collaboration among government agencies, research institutions, local communities and technology providers, together with the development of an investment-readiness package, is intended to facilitate technology uptake, replication and access to subsequent implementation support.

Indonesia is neither a Least Developed Country (LDC) nor a Small Island Developing State (SIDS).
Furthermore, Indonesia has received CTCN technical assistance within the last five years, including the completed project "Identification of technical practices for climate-smart agriculture (CSA) in Indonesia", completed in 2024.

The request combines climate change adaptation and mitigation objectives, with potential to contribute to CTCN's portfolio across both climate objectives.
Its adaptation dimension focuses on coastal erosion control, resilience to tidal flooding and sea-level rise, ecosystem restoration and coastal livelihoods. Its mitigation dimension focuses on the protection and enhancement of coastal carbon stocks, development of blue-carbon MRV approaches and assessment of potential future carbon-financing opportunities.
While the proposed MRV and investment-readiness components currently place considerable emphasis on mitigation and blue carbon, the planned field demonstration provides an opportunity to generate more direct adaptation outcomes.

The request has potential to contribute to systems transformation by linking site-level restoration technology demonstration with national policy implementation, technical standards, institutional coordination and investment planning.
The proposed Spatial Screening Framework, restoration design package, MRV methodology and national scale-up roadmap could strengthen Indonesia's institutional capacity to identify, assess and implement tidal-flat restoration interventions beyond individual pilot sites.
The involvement of national and provincial authorities, research institutions and local communities could support the integration of restoration technologies into coastal management practices. Lessons learned from the pilot may also inform replication in other Indonesian coastal provinces and regional knowledge exchange, subject to successful demonstration and institutional uptake.

The request is a national technical assistance request for Indonesia and is not formally structured as a multi-country or regionally bundled CTCN TA.

The request demonstrates a collaborative approach involving Indonesia's NDE, the Coordinating Ministry for Food Affairs as Request Applicant, the Ministry of Marine Affairs and Fisheries, and other relevant national institutions, including BAPPENAS and BRIN.
The request was developed following consultations with government stakeholders. Indonesian research institutions and universities are also identified as prospective technical and capacity-building partners.
The proposed investment-readiness component seeks to identify opportunities for subsequent financing through public, bilateral and multilateral sources, including KOICA, EDCF, ADB, AIIB and GCF, as well as potential carbon-financing mechanisms.
These financing pathways represent potential opportunities rather than confirmed funding commitments.

The request incorporates gender and local community participation into the proposed technical assistance activities.
The assistance also seeks to strengthen the participation of coastal communities in restoration planning, livelihood integration and community-based monitoring. Potential benefits include improved coastal resilience, support for small-scale fisheries and aquaculture livelihoods, and local employment associated with restoration and monitoring activities.
The request identifies Indigenous Peoples as a relevant cross-sectoral theme.