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Foreword: The Uncharted Skies of Aviation’s Green Transition

The global aviation industry, a vital engine of modern connectivity and commerce, finds itself at a critical crossroads. It faces a dual imperative: to meet the ever-increasing demand for air travel while simultaneously addressing the profound challenge of climate change. We are trying to present the emergence of hydrogen as a potential breakthrough technology poised to fundamentally redefine the future of flight. Moving beyond a simple technological overview, it delves into the complex, interconnected landscape of engineering, economics, infrastructure, and policy that will ultimately determine whether hydrogen aviation can successfully take flight and help achieve a net-zero future.

Chapter 1: The Looming Carbon Shadow: Why Aviation Needs a Revolution

1.1 The Scale of the Challenge

The aviation sector’s environmental impact is a pressing concern, driven by its reliance on fossil fuels. While aviation’s share of global emissions may appear modest—accounting for 2.5% of the world’s energy-related carbon dioxide (CO2​) emissions in 2023—this figure is expected to grow as other economic sectors decarbonize at a faster rate.¹ Projections from the International Air Transport Association (IATA) paint a stark picture: without significant changes, passenger air traffic could generate two billion tons of

CO2​ annually by 2050, which is more than double the industry’s 2019 emissions.² This trend is particularly concerning given that global fuel consumption has already surpassed pre-pandemic levels, erasing the emissions reductions that occurred during the COVID-19 lockdowns.²

Furthermore, the climate impact of aviation extends beyond direct CO2​ emissions. Non-CO2​ effects, such as contrail cirrus formations, are now understood to have a significant warming impact. Studies estimate that contrails could contribute a warming effect comparable to an additional 61% of annual aviation CO2​ emissions.¹ In response to this existential threat, major industry bodies, including IATA and the International Civil Aviation Organization (ICAO), have set ambitious goals to achieve net-zero carbon emissions by 2050.¹ The industry has recognized that meeting these targets will require removing a cumulative 21.2 gigatons of

CO2​ from aviation operations between now and mid-century.²

1.2 Limitations of Incremental Solutions: The SAF Bridge

In the short to medium term, Sustainable Aviation Fuels (SAFs) are widely considered the most viable solution to mitigate emissions from the existing aircraft fleet. SAFs, which are produced from non-fossil feedstocks like waste fats and oils, can reduce the carbon intensity of flying by up to 80% over their lifecycle.¹ However, the path to widespread SAF adoption is fraught with significant challenges. Currently, SAF represents less than 0.1% of global aviation fuel, a stark indicator of the insufficient supply and high costs that plague the market.¹ By 2030, the projected production capacity for SAFs is expected to meet only a small fraction of the total jet fuel demand, highlighting a major disconnect between ambition and reality.⁶

This is where the relationship between SAF and hydrogen becomes critical. Rather than being competing solutions, hydrogen is a foundational component for the production of almost all SAFs.⁴ This means the scalability of SAF is intrinsically dependent on the development of a robust, green hydrogen economy. The aviation sector’s decarbonization efforts therefore present a complex, multi-generational dilemma. The current global fleet, with its average operational lifetime of decades, relies on SAF as a critical transitional fuel.³ Yet, the very production of this fuel is constrained by the nascent state of the hydrogen ecosystem. At the same time, to meet the 2050 net-zero targets, all new aircraft delivered by the mid-2030s will need to be zero-emission, necessitating a parallel and aggressive focus on radically new propulsion technologies.³ This intricate web of interdependencies necessitates a coordinated, long-term policy framework that incentivizes investment across the entire value chain, from hydrogen production to its end-use, to avoid a piecemeal approach that would ultimately fall short of climate goals.

Table 1: Global Aviation Emissions and Projections (1990-2050)

Year	Annual CO2​ Emissions (Gigatons) 2	Projected Annual CO2​ Emissions (Gigatons) 2
1990	~0.5	N/A
2019	0.9	N/A
2020	~0.5 (COVID-19 Dip)	N/A
2023	0.95	N/A
2050	N/A	2.0 (Business-as-usual)

Chapter 2: The Two Paths of Hydrogen: Combustion vs. Fuel Cells

2.1 The Promise and the Physics

Hydrogen is a highly attractive fuel source for aviation, primarily due to its unique physical properties. It possesses a specific energy density (energy per unit mass) that is 2.8 times higher than conventional jet fuel.⁷ This means less fuel mass would be required to power an aircraft for the same range, presenting a significant opportunity for weight reduction.⁷ When hydrogen is produced using renewable energy sources, its consumption creates no

CO2​ emissions, making it an ideal zero-carbon solution.⁸ The only direct byproduct of hydrogen propulsion is water vapor.⁹ However, hydrogen’s low volumetric energy density (energy per unit volume) presents a major design challenge, as it is 3.7 times lower than jet fuel even when stored in its liquid, cryogenic state.⁷ This physical constraint is a key driver behind the two main pathways for hydrogen propulsion being explored today.

2.2 Direct Combustion: The Turbine Legacy

One approach is to adapt existing aircraft propulsion technology to burn hydrogen directly. This involves using a modified gas turbine engine that combusts liquid hydrogen to generate thrust.⁹ This method offers a straightforward way to achieve a 100% reduction in direct

CO2​ emissions.¹⁰ This strategy has the advantage of building upon decades of established gas turbine technology, making it a more scalable option for higher-capacity and longer-range aircraft segments.¹⁰ However, a key drawback is that hydrogen combustion still produces nitrogen oxides (

NOx​) emissions, which, while not a carbon-based greenhouse gas, still have a warming effect and contribute to air pollution.¹⁰

2.3 Fuel Cells: The Electric Future

The second, and increasingly favored, approach utilizes hydrogen fuel cells to generate electricity, which then powers electric propulsors.⁹ This method offers a complete zero-emission solution, as it produces no

CO2​ or NOx​ emissions—only water vapor.⁹ Fuel cell systems are also remarkably efficient, estimated to be two to three times more efficient than traditional combustion engines.¹² This high efficiency is a key factor in their appeal. However, fuel cell technology presents its own set of challenges, including greater complexity, higher weight, and a lower power density compared to jet turbines.⁸ These factors currently make fuel cells best suited for smaller, short- to medium-range aircraft.¹⁰

An examination of the two pathways reveals a profound difference in their potential climate impact. While both hydrogen combustion and fuel cells eliminate direct CO2​ emissions, the fuel cell approach is considered more complete because it also eliminates NOx​ and particulate matter. The total climate impact reduction from fuel cells is estimated to be significantly higher, at 75% to 90%, compared to 50% to 75% for combustion and 30% to 60% for SAFs.⁹ This suggests that while both technologies represent significant advancements, fuel cells are the more holistic and ultimate solution for climate-neutral flight. The strategic shift by Airbus to concentrate its ZEROe program on fuel cell technology after initially exploring both pathways is a powerful testament to this conclusion.¹¹ This decision highlights a growing consensus within the industry that while direct combustion might be a valuable interim step, the long-term future of zero-emission flight lies in the efficiency and cleanliness of fuel cells.

Table 2: Comparison of Hydrogen Propulsion Technologies

Feature	Hydrogen Direct Combustion	Hydrogen Fuel Cells (Electric Propulsion)
Emission Profile	Zero CO2​ emissions; produces NOx​ and water vapor.10	Zero CO2​ or NOx​ emissions; produces only water vapor.9
Energy Efficiency	Lower than fuel cells; similar to existing turbines.12	2-3 times more efficient than combustion engines.12
Current Readiness	Builds on established turbine technology; more scalable for large aircraft.10	Less mature, with lower power density challenges; best suited for smaller aircraft.10
Suitable Aircraft Type	Potentially for regional, short-haul, and long-haul aircraft.5	Short- to medium-range aircraft, especially regional and commuter.10

Chapter 3: Engineering the Future: Onboard Systems & Design Innovations

3.1 The Cryogenic Conundrum

The physical properties of hydrogen demand a radical re-engineering of the aircraft itself. Because hydrogen has an extremely low volumetric energy density, it must be stored as a super-cold liquid at a temperature of -253°C to be a viable fuel source.⁷ This necessitates the use of specialized cryogenic fuel tanks that are heavily insulated to maintain this temperature and are capable of withstanding the immense pressures involved.¹⁷ These tanks are a departure from traditional aircraft design; they cannot be housed in the wings, which are conventionally used for fuel storage. Instead, they must be placed within the fuselage, which requires a complete redesign of the aircraft’s body.⁷ This new design increases the fuselage volume and drag, which directly affects the aircraft’s aerodynamic efficiency.⁷

3.2 Material Science and Safety

The choice of materials for these cryogenic tanks is a critical area of innovation. The materials must not only possess the mechanical properties to withstand extreme cold without becoming brittle but must also be lightweight to meet the strict efficiency and performance requirements of aviation.¹⁶ A key concern is a phenomenon known as hydrogen embrittlement, where hydrogen atoms can cause cracks and fractures in metals, compromising structural integrity.¹⁷ Aluminum alloys are emerging as a prime candidate for tank construction because they demonstrate superior cryogenic properties and a favorable strength-to-weight ratio compared to other materials like stainless steel.¹⁶ Designing a hydrogen aircraft is an exercise in safety-critical engineering, where the high flammability and explosive properties of hydrogen require an entirely new approach to tank design to minimize risks to both the aircraft and its passengers.¹⁷

3.3 Beyond Propulsion: Hydrogen as a Thermal Management Solution

One of the most innovative breakthroughs in aero hydrogen technology is the use of the fuel itself as a thermal management solution. Recent research has shown that hydrogen can serve a dual purpose: as a clean fuel and as a built-in cooling medium for critical onboard systems.¹⁹ This is achieved by routing the ultra-cold liquid hydrogen through a series of heat exchangers before it reaches the engines. These exchangers are strategically placed to remove waste heat from high-efficiency components such as superconducting generators, motors, cables, and power electronics.¹⁹ This process creates a virtuous cycle. The hydrogen, as it absorbs the heat, is preheated to the required temperature for the fuel cells, which improves their efficiency. Simultaneously, the cooling of the electrical systems reduces resistance and enhances overall performance.¹⁹ This integrated design is a powerful innovation that eliminates the need for a separate, heavy cooling system and avoids the risks associated with mechanical pumps operating under cryogenic conditions, simplifying the overall system architecture.¹⁹

The challenge of hydrogen aviation is not merely replacing a jet engine; it is a fundamental re-engineering of the entire aircraft as an integrated system. The necessity of placing large, cylindrical fuel tanks in the fuselage drives changes in wing design, airframe materials, and even the aircraft’s physical footprint on the ground.⁷ The symbiotic relationship between the fuel system and the electrical systems for thermal management creates a complex, interdependent architecture that is vastly different from that of a conventional aircraft.¹⁹ This systemic re-engineering poses a massive challenge for regulators and certification bodies. The timeline for commercial adoption will be dictated not just by technological readiness, but by the time it takes to develop and certify new regulatory frameworks and safety standards for these radically new aircraft designs.

Chapter 4: The Pioneers: Industry Leaders and Startups Driving Change

4.1 Airbus: The All-In Approach with ZEROe

Airbus, a global leader in aerospace manufacturing, has adopted a highly aggressive and public-facing strategy for hydrogen aviation through its ZEROe program. Launched in 2020 to explore both hydrogen combustion and fuel cell technologies, the company announced a strategic decision by 2025 to focus its efforts on fuel cells as the most promising path forward.¹¹ To accelerate this vision, Airbus has formed a joint venture with ElringKlinger, named Aerostack, specifically to develop a megawatt-class fuel cell stack that meets aerospace standards.¹⁴ This partnership has already produced a significant milestone: a 1.2 megawatt fuel cell demonstrator successfully completed testing in 2023.¹⁴ Acknowledging that the success of hydrogen aviation depends on more than just the aircraft, Airbus is proactively building a global ecosystem by partnering with airports and energy providers to develop the necessary hydrogen production, storage, and refueling infrastructure on the ground.¹¹

4.2 Boeing: The Cautious Hybrid Strategy

In stark contrast to Airbus’s all-in approach, Boeing has adopted a more cautious, hybrid strategy. The company’s public-facing sustainability efforts have primarily focused on the development and use of Sustainable Aviation Fuels (SAFs) as a more viable, near-term solution for decarbonization.⁴ Boeing has set a clear goal to make all its commercial airplanes compatible with 100% SAF by 2030, a commitment that highlights its focus on the existing and near-future fleet.⁴ However, Boeing is not ignoring hydrogen’s potential. The company has a long history of hydrogen research and demonstration projects, particularly for space and unmanned aerial vehicles.⁵ Its work includes the development and testing of advanced composite cryogenic fuel tanks, a critical component for hydrogen aviation.⁵ A quote from Boeing’s CEO captures the company’s perspective: “We don’t want to artificially create an expectation that this is the answer when we’re not convinced that it is”.²² This statement reflects a fundamental difference in strategy, prioritizing SAF as the safest and most measurable solution for the next two decades.²²

4.3 ZeroAvia: The Startup Catalyst

While incumbents like Airbus and Boeing navigate the high-stakes landscape of commercial airliners, agile startups like ZeroAvia are carving out a niche in a different segment. ZeroAvia is focused on developing hydrogen-electric powertrains for existing regional aircraft, with the ambitious goal of certifying its ZA600 engine for 9-19 seat planes by 2025.¹² This strategy of retrofitting existing airframes allows the company to accelerate its time-to-market and prove the technology’s viability in a less regulated, smaller-scale environment.¹² ZeroAvia’s rapid progress has attracted significant attention and investment, including from Airbus itself.²⁴ The startup is already working on a more powerful ZA2000 engine for 40-80 seat aircraft, with a long-term vision to scale fuel cell propulsion to all aircraft sizes.²⁵ ZeroAvia’s partnerships with major aircraft OEMs and airport operators demonstrate its commitment to building the foundational hydrogen ecosystem from the ground up.²³

The dynamic between these players highlights a crucial aspect of the technological transition. An established industry with multi-decade product cycles, like Boeing, is naturally hesitant to commit to a disruptive technology due to the immense financial and regulatory risks involved. In contrast, a competitor with strong government backing and a clear mandate, like Airbus, can push more aggressively. The investment by Airbus in ZeroAvia is a powerful strategic maneuver. It allows the incumbent to de-risk its own strategy by supporting a parallel development path, leveraging external innovation, and fostering a robust ecosystem for both small and large hydrogen aircraft. This interplay between large-scale ambition and agile, niche innovation is a key driver that could accelerate the entire sector’s transition toward a zero-emission future.

Chapter 5: The Ground Game: Building the Hydrogen Ecosystem

5.1 The Investment Chasm: Off-Airport Infrastructure

The transition to hydrogen aviation is not an engineering challenge confined to the sky; it is, first and foremost, an infrastructure problem on the ground. A comprehensive study on the European hydrogen aviation market reveals a striking cost breakdown: the vast majority of the required investment is not in the aircraft themselves, but in the off-airport infrastructure needed to produce and distribute hydrogen.²⁷ Of the estimated €299 billion needed to develop and run the hydrogen aviation value chain in Europe between 2025 and 2050, hydrogen production accounts for the largest share at 54% (€161 billion), followed by liquefaction at 23% (€68 billion), and distribution at 6% (€18 billion).²⁷ This leaves a comparatively small portion—12% for on-airport infrastructure and a mere 5% for the aircraft design itself.²⁷ The total required capital investment for this new propulsion ecosystem is staggering, estimated to be between $700 billion and $1.7 trillion by 2050.²⁷

5.2 Airport Infrastructure and Operations

Airports will be at the heart of this transformation, facing a complete overhaul of their operational infrastructure. Managing the new utility demands for hydrogen production, liquefaction, and storage will be a significant challenge, requiring a secure and efficient supply of both electricity and water.²⁹ The refueling process itself is a complex departure from conventional jet fuel operations. It will require specialized equipment and new procedures to handle the high pressures and maintain the cryogenic temperatures of liquid hydrogen.²⁹ Additionally, safety regulations will necessitate significantly larger safety zones around refueling operations compared to those for kerosene, which could have a major impact on airport layout, aircraft ground movements, and the passenger boarding process.²⁹ New rescue and firefighting protocols, along with extensive employee training, will be required to address the unique properties of hydrogen, such as its high flammability and rapid evaporation rate.²⁹ The lack of a clear, harmonized policy framework to guide the development of these systems remains a major hurdle.¹³

The industry faces a classic “chicken-and-egg” problem: airlines are hesitant to invest in hydrogen aircraft without a reliable and cost-effective refueling infrastructure, while energy providers and airports are reluctant to make massive investments in that infrastructure without a clear demand signal from airlines.²⁷ This impasse is a major obstacle that single entities cannot solve alone due to the high costs and long lead times involved. Airbus’s strategy of forming partnerships with airports is a direct attempt to break this stalemate by creating a coordinated, multi-stakeholder ecosystem. This strategic alignment underscores the reality that the development of hydrogen aviation is not solely a matter of technological innovation but of coordinated, multi-sectoral collaboration.

Table 3: Cost Breakdown of Hydrogen Aviation Infrastructure (Europe, 2025-2050)

Cost Category	Total Cost (Euros) 28	Percentage of Total 28
Hydrogen Production	€161 billion	54%
Hydrogen Liquefaction	€68 billion	23%
Hydrogen Distribution	€18 billion	6%
On-Airport Infrastructure	€37 billion	12%
Aircraft Design	€15 billion	5%
Total	€299 billion	100%

Chapter 6: Navigating the Economic & Policy Headwinds

6.1 The Cost of Green Hydrogen

The economic viability of hydrogen aviation is not an intrinsic property of the technology but is dependent on the broader economic and political landscape. One of the primary economic barriers is the cost of producing green hydrogen. A study projects that in 2035, the operational cost of running a hydrogen plane could be 8% more expensive than a kerosene-fueled aircraft.²⁷ This cost is heavily influenced by the upstream supply chain, with production, liquefaction, and distribution accounting for the vast majority of the total cost.²⁷ However, the same study notes that if a tax on fossil jet fuel and a price on carbon were in place, hydrogen planes could become 2% cheaper to operate than their kerosene counterparts.²⁷

6.2 The Power of Policy

The analysis indicates that policy is a critical enabler for the hydrogen transition. To create a market for zero-emission aircraft, a “virtuous circle of regulation, investment and a fall in prices” is necessary.²⁷ Policy interventions, such as carbon pricing, taxes on fossil fuels, and blending mandates for SAF, can provide the clear market signals needed to make green technologies economically competitive.²⁷ Without such interventions, the massive, multi-trillion-dollar investments required for the hydrogen ecosystem cannot be shouldered by the private sector alone due to the long-term, high-risk nature of the projects.²⁷ This suggests that the transition will not occur organically based on market principles alone; it requires a top-down push from governments to de-risk investment and create the regulatory certainty needed for private capital to flow at the required scale.

6.3 A Comparative Economic View

From an economic perspective, the massive infrastructure investment required for hydrogen aviation stands in stark contrast to other decarbonization options. The €299 billion estimated for the European hydrogen value chain, with its heavy emphasis on production and liquefaction, is a significant financial commitment.²⁸ This contrasts sharply with Power-to-Liquid (PtL) fuels, which are also produced using hydrogen but require only marginal upgrades to existing airport and aircraft infrastructure.³³ While hydrogen aviation holds the promise of long-term cost advantages at scale due to its efficiency and liquefaction economics, PtL offers a more accessible, near-term path due to its lower infrastructure investment requirements.³³ This creates a complex strategic choice for the industry, weighing the immediate benefits of PtL against the long-term potential of direct hydrogen propulsion. This situation confirms that a technological breakthrough is not sufficient; it must be accompanied by policy and financial breakthroughs to make it a commercially viable reality.

Conclusion: The Horizon of Zero-Emission Flight

The journey toward zero-emission flight is a multi-act saga, not a single leap. The narrative begins with a stark recognition of aviation’s growing carbon shadow and the limitations of incremental solutions like SAF. It then progresses through the exploration of radical hydrogen technologies, leading to the realization that fuel cells, while challenging, offer the most complete and sustainable solution. The third act involves the deep engineering required to reinvent the aircraft itself, from fuselage design and new materials to the innovative use of hydrogen for thermal management. The current and final act, however, is the most difficult: building the foundational ecosystem on the ground and navigating a complex economic and policy landscape.

The challenges are immense—ranging from trillions in infrastructure costs to the complete redesign of aircraft and airports—but a clear, albeit difficult, path is emerging. The breakthroughs in aero hydrogen technology are not isolated events but the cumulative result of coordinated research, strategic investment, and forward-thinking policy. The transition will require a multi-faceted approach, with large incumbents, nimble startups, and governments all playing a vital, interconnected role. The horizon of zero-emission flight is no longer a distant dream but a tangible destination actively being charted by a new generation of pioneers.

References

The following is a list of the references used in this paper, with all duplicated entries removed.

• ADB. (n.d.). ASEAN Catalytic Green Finance Facility (ACGF). https://www.adb.org/what-we-do/funds/asean-catalytic-green-finance-facility/overview
• ADB. (n.d.). Renewable Energy Manufacturing Opportunities in Southeast Asia. https://www.adb.org/sites/default/files/publication/901536/renewable-energy-manufacturing-opportunities-southeast-asia.pdf
• Akitra. (2025). Securing the smart grid. https://akitra.com/securing-the-smart-grid/
• ASEAN. (2024). ASEAN for Business Bulletin. https://asean.org/wp-content/uploads/2024/01/ASEAN-for-Business-Bulletin-January-2024.pdf
• ASEAN Centre for Energy. (2024). Accelerating Clean Energy Investment in ASEAN. https://www.aseanenergy.org/wp-content/uploads/2024/11/PB_Accelerating-Clean-Energy-Investment-in-ASEAN_Policy-Options.pdf
• ASEAN Centre for Energy. (2024). ASCC-RD Policy Brief. https://asean.org/wp-content/uploads/2024/02/ASCC-RD_Policy-Brief_CC1-2024.pdf
• Bain & Company. (n.d.). Sustainability Wins as Investors in Southeast Asia Shift Focus. https://www.bain.com/insights/sustainability-wins-as-investors-in-southeast-asia-shift-focus/
• BHP. (2025). Global industry leaders launch CCUS Hub study to accelerate decarbonisation in Asia. https://www.bhp.com/news/media-centre/releases/2025/08/global-industry-leaders-launch-ccus-hub-study-to-accelerate-decarbonisation-in-asia
• Bhat, S. (2025). Aging electric infrastructure in the United States. Interpro. https://interpro.wisc.edu/aging-electric-infrastructure-in-the-united-states/
• Blackbox. (n.d.). The rise of the sustainable consumer in Southeast Asia. https://www.blackbox.com.sg/perspectives/rise-of-the-sustainable-consumer-in-southeast-asia
• Carbon Trust. (n.d.). Accelerate to net-zero: a view from Southeast Asia. https://www.carbontrust.com/news-and-insights/news/accelerate-to-net-zero-a-view-from-southeast-asia
• CSIS. (n.d.). Clean Energy and Decarbonization in Southeast Asia: An Overview of Obstacles and Opportunities. https://www.csis.org/analysis/clean-energy-and-decarbonization-southeast-asia-overview-obstacles-and-opportunities
• CSIS. (n.d.). Energy Technologies and Decarbonization in Southeast Asia. https://www.csis.org/analysis/energy-technologies-and-decarbonization-southeast-asia
• CSIS. (n.d.). Mobilizing Private Finance for the Clean Energy Transition. https://www.csis.org/analysis/mobilizing-private-finance-clean-energy-transition-japans-green-transformation-and
• Datos.gob.es. (2025). Data governance in smart grids: from the meter to the energy strategy. https://datos.gob.es/en/blog/data-governance-smart-grids-meter-energy-strategy
• DynamicRatings. (n.d.). Distributed Energy Resources. https://www.dynamicratings.com/solutions/smart-infrastructure-solutions/distributed-energy-resources/
• East Asia Forum. (2025). Southeast Asia’s green transition at a tipping point. https://eastasiaforum.org/2025/08/09/southeast-asias-green-transition-at-a-tipping-point/
• Ember. (2024). ASEAN’s clean power pathways: 2024 insights. Power sector 2023. https://ember-energy.org/latest-insights/asean-insights-2024/power-sector-2023/
• Enerdata. (n.d.). Decarbonising ASEAN power. https://www.enerdata.net/publications/executive-briefing/decarbonising-asean-power.html
• Georgetown Climate Center. (n.d.). Implementing equitable investments in grid resilience. https://www.georgetownclimate.org/adaptation/toolkits/equitable-adaptation-toolkit/implementing-equitable-investments-in-grid-resilience.html
• Green Finance Institute. (2025). Unlocking private capital for ASEAN’s green transition. https://www.greenfinanceinstitute.com/insights/unlocking-private-capital-for-aseans-green-transition/
• GRID Alternatives. (n.d.). Policy leadership. https://gridalternatives.org/what-we-do/policy-leadership
• Gulyamov, S. S. A., et al. (2025). Predictive Maintenance of Smart Grid Components Based on Real-Time Data Analysis. SUMMA journal. https://gulyamov.org/wp-content/uploads/2025/01/5.-Predictive-Maintenance-of-Smart-Grid.pdf
• IBM Institute for Business Value. (2025). Power grid modernization. https://www.ibm.com/thought-leadership/institute-business-value/en-us/report/power-grid-modernization
• IEA. (2024). Southeast Asia Energy Outlook 2024 Executive Summary. https://www.iea.org/reports/southeast-asia-energy-outlook-2024/executive-summary
• IEA. (2025). World Energy Investment 2025/Southeast Asia. https://www.iea.org/reports/world-energy-investment-2025/southeast-asia
• JEC Senate Democrats. (2024). How renewable energy can make the power grid more reliable…. https://www.jec.senate.gov/public/index.cfm/democrats/2024/1/how-renewable-energy-can-make-the-power-grid-more-reliable-and-address-risks-to-electricity-infrastructure
• Krungsri. (2024). ASEAN Green Finance 2024. https://www.krungsri.com/en/research/research-intelligence/asean-green-finance-2024
• Landis+Gyr. (n.d.). InteroperabilityIntelligence. https://www.landisgyr.com/solution/gridstream-connect/interoperability-intelligence/
• MAS. (2024). Macroeconomic Review. https://www.mas.gov.sg/-/media/mas-media-library/publications/macroeconomic-review/2024/oct/mroct24_box_a.pdf
• Number Analytics. (2025). Smart grid security best practices. https://www.numberanalytics.com/blog/smart-grid-security-best-practices
• Number Analytics. (2025). Ultimate guide to grid data management. https://www.numberanalytics.com/blog/ultimate-guide-grid-data-management
• Official Energy Asia. (n.d.). Growing ambition underpins ASEAN net-zero targets. https://www.officialenergyasia.com/growing_ambition_underpins_asean_net_zero_targets/
• PNNL. (n.d.). Grid analytics. https://www.pnnl.gov/grid-analytics
• PwC. (n.d.). Sustainability Counts 2023. https://www.pwc.com/gx/en/issues/esg/esg-asia-pacific/sustainability-counts-2023.html
• PwC. (n.d.). Sustainability Counts 2023 Report highlights. https://www.pwc.com/sg/en/publications/assets/page/sustainability-counts-2023.pdf
• Qualitylogic. (n.d.). Interoperability: Why policy makers should make it their personal mission. https://www.qualitylogic.com/knowledge-center/interoperability-why-policy-makers-should-make-it-their-personal-mission/
• SEI. (n.d.). COVID-19: A chance to unlock Southeast Asia’s fossil fuel reliance. https://www.sei.org/perspectives/covid-19-unlock-southeast-asia-fossil-fuel-reliance/
• SEPA Power. (n.d.). The aging U.S. power grid: Navigating toward modernization. https://sepapower.org/knowledge/the-aging-us-power-grid-navigating-toward-modernization/
• Security Industry Association. (n.d.). Guide to NERC CIP Compliance. https://www.securityindustry.org/member-resources/reports-publications/guide-to-nerc-cip-compliance/
• SSGA. (n.d.). Energy transition and decarbonization: is Asia prepared?. https://www.ssga.com/sg/en/institutional/insights/energy-transition-and-decarbonization-is-asia-prepared
• Sustainability Directory. (n.d.). What are the regulatory challenges facing grid modernization?. https://energy.sustainability-directory.com/question/what-are-the-regulatory-challenges-facing-grid-modernization/
• Terrascope. (2023). Carbon pricing in Southeast Asia and its impact on businesses. https://www.terrascope.com/blog/carbon-pricing-in-southeast-asia-and-its-impact-on-businesses
• WEDC. (2022). Supply chain challenges continue in Southeast Asia. https://wedc.org/market-intelligence/posts/supply-chain-challenges-continue-in-southeast-asia/