Southeast Asia Solar Inverter Market: Policy Differences and Development Trends
In the wave of global energy transformation, Southeast Asia has become an important position for the development of the solar industry with its abundant solar energy resources and rapidly growing electricity demand. As a key equipment in solar power generation systems, the market development of solar inverters is closely related to the policy support of various countries. This article will explore in depth the policy differences among Southeast Asian countries in solar inverters and the impact of these policies on market development.

Vietnam: Policy Adjustments and Market Opportunities
Vietnam is one of the fastest-growing countries in Southeast Asia for solar energy. In 2017, the Vietnamese government provided subsidies of up to 9.35 cents/kWh for ground photovoltaic projects, which promoted a surge in solar projects. However, high subsidies also brought fiscal pressure. Since then, subsidies have been adjusted continuously, falling to 7.09 cents/kWh in 2020 and further to 5.02 cents/kWh in 2023, which has had a certain impact on the financial feasibility of large-scale photovoltaic power station projects.
In 2024, Vietnam passed the Direct Power Purchase Agreement (DPPA), which allows power purchasers to purchase green electricity through the national or private power grid, but stipulates that the monthly electricity consumption must reach more than 200,000 kWh. If the photovoltaic power supplier uses the national grid, the installed capacity must reach more than 10MW, and the private grid is not subject to this restriction. In addition, Vietnam also issued the "Notice No. 356/TB-VPCP", which clarifies the definition of "self-generated and self-used rooftop photovoltaic projects", cancels the restrictions on rooftop photovoltaic installed capacity that is not connected to the grid, and simplifies the application process. These policy adjustments, while regulating market development, have also brought new opportunities to the solar inverter market, especially in the field of small distributed photovoltaic systems.
Thailand: Steady trial and target improvement
Thailand began to gradually pilot DPPA in June 2024, limiting large users to directly purchase up to 2GW of green electricity, and is expected to release clear guidelines and details by the end of 2024. In September 2024, Thailand announced a new version of the "Electricity Development Plan", with energy security, environmental protection and control of electricity prices as the main policy axis. While maintaining economic growth, it also takes into account energy transformation, and its photovoltaic installation target will be further increased.
Driven by policies, Thailand's solar inverter market has shown a steady growth trend. With the increase in green electricity demand and the increase in photovoltaic installation targets, higher requirements are placed on the performance and reliability of inverters, which has also prompted inverter manufacturers to continuously optimize product technology to meet the needs of the Thai market.
Malaysia: Implementation of the new plan and market potential
In September 2024, Malaysia began to implement the "Corporate Renewable Energy Supply Scheme" (CRESS), which relaxed restrictions on green electricity transactions. The power purchaser and the power supply party can directly negotiate, but the power purchaser is limited to medium and high voltage electrical commercial users with additional power demand, and the power supply party must still transmit electricity through the national grid and bear the usage fee.
Previously, Malaysia's renewable energy policy has also made some progress. For example, the Renewable Energy Quota Plan, which will take effect on July 1, 2023, requires large power users to purchase a certain proportion of renewable energy electricity or certificates, and those who fail to comply will face fines. The implementation of these policies has stimulated the market demand for solar inverters, especially in the industrial and commercial fields, providing a broad market space for inverter companies.
Philippines: Policy Update and Market Simplification
The Philippines will suspend the application of renewable energy projects for five months from June 25, 2024 to update energy-related policies, but the progress of projects that have been applied for will not be affected. After the policy is updated in the future, developers can apply for licenses before 2025 to conduct feasibility studies and preliminary investigations on the development of renewable energy projects, without having to wait for approval from the Ministry of Energy. At the same time, the new regulations will greatly simplify the administrative procedures for applying for duty-free imports of project products.
The solar inverter market in the Philippines is expected to usher in a new stage of development after policy adjustments and simplifications. Especially in remote island areas, due to weak power grids, there is a large demand for off-grid inverter products, and the market potential needs to be further explored.
Singapore: Policy maturity and cross-border cooperation
Singapore is a country with relatively mature photovoltaic policies in Southeast Asia, but due to limited land resources, it is difficult to build photovoltaic projects on a large scale. In recent years, it has turned to neighboring countries to import green electricity and vigorously promote cross-border power grid integration. In July 2022, Singapore began to implement the Laos-Thailand-Malaysia-Singapore Power Integration Plan (LTMS-PIP), planning to import more than 4GW of green electricity by 2035. In April 2024, the cross-border energy trading platform between Singapore and Malaysia began to be piloted. Malaysia will make 100MW of green electricity available to Singapore users through the power grid, and plans to acquire more than 200MW of green electricity through multi-country power transactions in June.
In the field of solar inverters, Singapore pays more attention to technology research and development, talent training and solution output. The maturity of its policies and the promotion of cross-border cooperation provide inverter companies with opportunities to participate in regional power grid integration and technological innovation.
Indonesia: Frequent changes and potential release
Indonesia's solar energy policies have changed frequently in the past few years, and there is a certain degree of uncertainty in the regulatory policies applicable to renewable energy projects. However, Indonesia has abundant renewable energy resources, and the government has set a goal of renewable energy accounting for 23% of the energy structure by 2030 and achieving net zero carbon emissions by 2050. In order to promote the development of renewable energy such as solar energy, the Indonesian Ministry of Energy and Mineral Resources has introduced a series of tax incentives, such as the provision on February 3, 2023 that the production and import of machinery and/or materials for renewable energy power generation equipment can enjoy corporate income tax incentives, and the provision on December 29, 2023 that capital goods and imported goods used for renewable energy power generation can enjoy import tax incentives.
Although the instability of policies has brought some challenges to the market, with the gradual improvement of policies and the advancement of goals, Indonesia's solar inverter market has great potential. Especially in the field of distributed photovoltaic power generation, with the reduction of costs and the advancement of technology, market demand is expected to be further released.
Laos: Stable policies and cooperation opportunities
As early as 2015, the Lao government approved the "Renewable Energy Development Policy and Strategy", which clearly proposed to encourage the development of solar energy, wind energy, biomass energy and geothermal energy, and promote the contribution of renewable energy to economic and social development in various ways. The Lao Electricity Law, which came into effect on January 1, 2016, provides detailed regulations on electricity production, transmission, distribution, import and export, and supervision, providing legal protection for the development of renewable energy industries, including solar inverters.
While developing its own renewable energy industry, Laos also actively participates in regional cooperation, such as the East Mekong Subregion Renewable Energy Cooperation. Stable policies and cooperation opportunities have created favorable conditions for solar inverter companies to enter the Lao market.
Brunei: Initial Exploration and Policy Support
Brunei attaches great importance to climate change issues and has pledged to reduce carbon emissions by 30% by 2035. On December 21, 2021, it released the Brunei Energy Policy 2035 framework document, which clarified the development goals and regulatory framework for renewable energy, including solar energy. Although Brunei's solar industry is still in its early stages, the government's policy support and capital investment have laid the foundation for the development of the solar inverter market.
Cambodia: Policy Improvement and Market Development
Cambodia's renewable energy policy is still being formulated and improved. In August 2020, the Cambodian government approved the first solar park project, opening a new chapter in the development of renewable energy. With the gradual advancement of policies and the continuous development of the market, Cambodia's solar inverter market will also usher in new opportunities.
Myanmar: Policy Reform and Market Potential
Myanmar is working hard to reform electricity policies and regulations and strengthen grid infrastructure construction to promote the development of renewable energy. As one of the important directions for the development of renewable energy in Myanmar, solar energy has great potential in the inverter market and needs to be further explored.
Future Outlook of Southeast Asia's Solar Inverter Market
In general, there are obvious differences in policies on solar inverters among Southeast Asian countries. The policies of countries such as Vietnam, Thailand, and Malaysia are relatively positive and clear, providing strong support for the development of the solar inverter market; although the policies of countries such as the Philippines and Indonesia are somewhat unstable, the market potential is huge; Singapore leads the development of the regional market with policy maturity and cross-border cooperation; Laos, Brunei, Cambodia, Myanmar and other countries are also actively formulating and improving policies to promote the start and development of the solar inverter market.
In the future, with the acceleration of global energy transformation and the advancement of renewable energy goals in Southeast Asian countries, the solar inverter market will usher in a broader development space. Inverter manufacturers need to pay close attention to the policy dynamics of various countries and formulate corresponding market strategies according to the market demand and policy characteristics of different countries in order to gain a foothold in the Southeast Asian market. At the same time, governments also need to strengthen the stability and consistency of policies, optimize the business environment, attract more investment and technological innovation, and jointly promote the sustainable development of the solar inverter industry in Southeast Asia.