Rethinking Energy in Southeast Asia

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It's time to #ShapeOurFuture with a clear roadmap to net zero

The Rethinking Energy in Southeast Asia series discusses key global and local factors that shape the energy sector. Driven by national energy strategies, falling installation costs of renewables, and public pressure against fossil fuels, countries in the region are gradually transforming their fossil fuel-based power generation fleets into more sustainable and diversified energy supply portfolios.

Learn more about the global energy transition and its impact on energy markets across Southeast Asia, and deep dive into the role of flexibility in high-renewable power systems in this new report.

Report summary

As the global shift to net zero accelerates, countries across Southeast Asia have an enormous opportunity to transition to clean power. By front-loading the deployment of renewables, Southeast Asian countries can accelerate decarbonisation and unlock myriad benefits.

To illustrate the measures needed for cost-optimal paths to net zero, Wärtsilä has modelled the future power systems in Vietnam, the Philippines and Indonesia. 

Each country has different geographies, socioeconomic dynamics, and power systems, yet the modelling shows that net zero is technically and commercially feasible for each of them. 

Net zero is not a distant possibility. The models provide a clear roadmap for the rapid expansion of renewable energy in the next decade, to create carbon-neutral power systems by mid-century. A recipe which can be translated throughout Southeast Asia.

This is an extract of the full report. Download the PDF here

About the modelling

The modelling in this report is based on techno-economic optimisation of the energy systems of Indonesia, the Philippines and Vietnam. The optimisation finds the least-cost capacity mix to meet electricity demand in the future, while respecting a range of emissions scenarios. We have used PLEXOS, a leading power market simulation software, for the power system modelling results presented in this report.

The scenarios compare differing emissions reductions. The ‘Business As Usual - BAU’ scenario omits any new reductions – modelling the current plans in the three markets. The target date / deadline by which emission limits are met within the scenarios is based on the country-level net zero commitments, plus political pressure to decarbonise between 2050-2060. 

For further details, see the report Methodology. Download the PDF here.




Shape our future in




If we act now, we can avoid locking ourselves into inflexible legacy technologies and instead build the optimal foundations for future Net Zero systems.

Frederic Carron, Vice President, Middle East & Asia

Press Release

  • Southeast Asia
    Rethinking Energy in Southeast Asia webcast episodes

    In this webcast series, listen to our experts and partners to learn more about topics close to the heart of the region - from energy solutions that help maximise customer value and optimise power systems while reducing environmental footprint, to key asset performance criteria to consider in future-proof power system planning.

Episode 1: Rethinking energy planning

How can the energy industry across Southeast Asia better plan, optimise and manage the integration of renewable energy sources into their power grids? Find out by listening to the experts from Energy Exemplar and Wärtsilä discuss how energy simulation software is transforming power system planning.

Read the article here.

Episode 2: Rethinking power system flexibility

In Indonesia, the power systems face a wide range of issues that make commitments to lowering carbon emissions and transitioning to renewables challenging. Listen to experts from Wärtsilä and PLN, Indonesia’s state electricity company, discuss why flexibility vital to the power systems.

Read the article here.

Episode 3: Rethinking market mechanisms for flexibility

The integration of variable renewable energy into energy systems requires flexible technologies that can balance their intermittent output and ensure overall grid stability. In this episode, we look at flexibility from a market, planning and financial perspective and how we can incentivise greater investment in flexibility that will help accelerate the integration of renewables.

Read the article here.


Episode 4: Rethinking energy storage systems

Installed energy storage is predicted to grow tenfold around the world in the coming decade, with 55% of that growth taking place in Asia Pacific. Find out what is driving this growth, as well as the challenges energy storage still faces in the region by listening to experts from Wärtsilä and the International Finance Corporation (World Bank).

Read the article here.


Episode 5: Rethinking hybrid power

The growing integration of renewable energy into power grids across the region is increasing the need for greater system flexibility to ensure stable power output. Find out how hybrid power plants provide a solution that can meet these needs and become instrumental in the energy transition across Southeast Asia.

Read the article here.


Episode 6: Rethinking gas conversions

As more countries across Asia prioritise decarbonisation and the integration of more renewable energy into their power grids, gas conversions of power plants are becoming an increasingly popular solution. Find out how gas converted power plants are helping to reduce emissions and provide the grid stability needed for energy transition across the region.

Read the article here.


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