In-depth Analysis of Green Power Investment Returns: Economic Considerations and Strategic Significance of New and Old Energy Layout
Against the backdrop of accelerating global energy transition, how to balance investment layouts between traditional energy and renewable energy has become a core issue in national energy strategies. By 2026, with the advancement of carbon neutrality goals and increasing energy security demands, Thailand, as an important energy consumer and producer in Southeast Asia, is undergoing profound changes in its energy structure. This article will conduct an in-depth analysis of the strategic impact of green power investment returns on energy layout, explore the economic viability and necessity of coordinated development between new and old energy sources, and provide strategic perspectives on the Thailand energy market for investors.
Current Status and Trends of Green Power Investment Returns
In recent years, the investment returns of renewable energy, especially solar and wind power, have shown significant improvement trends. According to the latest report from the International Energy Agency (IEA), by 2026, the levelized cost of electricity (LCOE) of global photovoltaic power generation has decreased by about 85% compared to 2015, while the cost of onshore wind power has decreased by about 56%. This cost reduction speed far exceeds the expectations of most analysts, making green power achieve parity or even lower-cost competition with traditional energy in multiple markets.
In the Thai market, the improvement in green power investment returns is particularly significant. Data from Thailand's Energy Policy and Planning Office (EPPO) shows that by 2026, the internal rate of return (IRR) of large-scale solar projects in Thailand has reached 12%-15%, compared to only 8%-10% five years ago. Meanwhile, the IRR of wind power projects has also increased to 10%-13%, showing that the economic attractiveness of renewable energy investment is continuously strengthening.
Behind this improvement in returns are the combined effects of multiple factors. First is the efficiency improvement and cost reduction brought by technological progress, with continuously increasing conversion efficiency of photovoltaic cells and expanding single-unit capacity of wind power generation. Second is the scale effect, as the expansion of renewable energy installation scale, supply chain optimization and project management experience accumulation have further reduced costs. Third is policy support, the Thai government has provided a stable policy environment for green power projects through mechanisms such as the Renewable Portfolio Standard (RPS) and Feed-in Tariff (FIT).
Strategic Significance of Coordinated Layout of New and Old Energy
Although green power investment returns continue to improve, traditional energy, especially natural gas, still plays an irreplaceable role in Thailand's energy structure. The strategic transformation of Thailand's national oil company (PTT) reflects the wisdom of this coordinated layout. While maintaining the steady development of traditional oil and gas business, PTT has heavily invested in renewable energy projects, forming a "dual-track parallel" development strategy.
From the perspective of energy security, a coordinated layout of new and old energy can effectively reduce energy supply risks. Traditional energy has the advantages of stability, controllability, and being unaffected by natural conditions, while renewable energy is clean, environmentally friendly, and sustainable. The combination of both can ensure energy supply security while gradually reducing carbon emissions, achieving a smooth transition of the energy structure.
From an economic perspective, coordinated layout can optimize the energy investment portfolio and reduce overall energy costs. Against the backdrop of rising carbon prices, the environmental costs of traditional energy are increasingly prominent, while green power, although with higher initial investment, has low operating costs and significant environmental benefits. By reasonably allocating the proportion of new and old energy, it is possible to minimize energy costs under different market conditions.
From a technical transition perspective, coordinated layout provides a buffer period for energy transition. The large-scale application of renewable energy still faces technical challenges such as intermittency and volatility, and the stable supply of traditional energy can provide necessary support for the energy system transition, ensuring the continuity and reliability of energy supply.
Impact of Carbon Market on Green Power Investment Returns
In 2026, the global carbon market has developed rapidly, with carbon prices continuously rising, which has had a profound impact on green power investment returns. Since its launch in 2023, Thailand's carbon trading market has shown a steady upward trend in carbon allowance prices, reaching 850 Thai baht per ton currently, an increase of over 300% compared to the initial launch.
The rise in carbon prices has significantly enhanced the investment returns of green power projects. On one hand, high carbon prices increase the environmental costs of traditional energy, making green power more competitive in relative terms. On the other hand, the carbon trading mechanism provides additional revenue sources for green power projects. Through carbon credit trading, green power projects can obtain additional income, further improving investment returns.
Data from Thailand's Ministry of Energy shows that in 2026, the average investment return of green power projects participating in carbon trading is 2-3 percentage points higher than non-participating projects. This data fully demonstrates the important role of the carbon market in promoting renewable energy investment and provides investors with new profit channels.
Case Study of Thailand's Energy Market: PTT's Strategic Transformation
As Thailand's largest energy company, PTT's strategic transformation is a typical case of coordinated layout of new and old energy. In 2026, PTT announced a "dual-track strategy," which means maintaining the advantages of traditional oil and gas business while heavily investing in renewable energy projects. According to PTT's 2026-2030 strategic plan, the company will invest 500 billion Thai baht in renewable energy development, aiming to reach 30% of total installed capacity by 2030.
PTT's green power investment strategy mainly includes three aspects: first, the development of large-scale ground-based photovoltaic power plants, with planned photovoltaic projects totaling 3GW capacity in multiple provinces across Thailand; second, distributed energy systems, focusing on rooftop photovoltaic projects in industrial parks and commercial buildings; third, energy storage technology, supporting the construction of battery energy storage systems to address the intermittency of renewable energy.
From an investment return perspective, PTT's green power projects have performed excellently. In the first half of 2026, the EBITDA profit margin of PTT's renewable energy business reached 25%, significantly higher than 15% of its traditional oil and gas business. This data shows that green power not only aligns with the direction of energy transition but also has good economic returns.
Global Energy Trends and Investment Recommendations
From a global perspective, the energy market is showing a "dual-track parallel" development trend. On one hand, traditional energy, especially natural gas, will maintain an important position for a long time, especially in developing regions such as Asia and Africa. On the other hand, renewable energy investment continues to grow, technological innovation accelerates, costs continuously decrease, and market penetration rate continuously increases.
For investors, seizing the opportunities of coordinated layout of new and old energy requires attention to the following key factors:
- Policy Environment: Closely monitor changes in national energy policies, especially carbon pricing mechanisms and renewable energy subsidy policies, as these policies directly affect investment returns.
- Technological Progress: Pay attention to key technological breakthroughs in energy storage technology, smart grids, etc., which will significantly enhance the competitiveness and investment value of renewable energy.
- Market Mechanisms: Participate in carbon trading markets, increase green power project returns through carbon credit trading; explore new financial instruments such as green certificate trading and renewable energy futures.
- Regional Differences: There are significant differences in resource endowments, energy structures, and development stages in different regions, requiring differentiated investment strategies.
For the Thai market, investors can focus on the following areas: first, large-scale ground-based photovoltaic projects, especially innovative models combining agriculture and photovoltaics; second, comprehensive energy solutions for industrial parks, integrating photovoltaics, energy storage, and demand-side response; third, green hydrogen production, developing the green hydrogen industry using Thailand's rich solar resources.
Conclusion: Looking Forward to the Future Direction of Energy
With the advancement of carbon neutrality goals and increasing energy security demands, the coordinated layout of new and old energy will become the mainstream model of global energy development. The continuous improvement of green power investment returns provides an economic foundation for energy transition, while the development of the carbon market creates additional value for green power investment.
For Thailand, accelerating energy structure transformation while maintaining energy supply security is the only way to achieve sustainable development. The strategic transformation of energy companies like PTT shows that the coordinated layout of new and old energy is not only feasible but also has significant economic and environmental benefits.
In the future, with technological progress, policy improvement, and market mechanism innovation, green power investment returns are expected to further improve, the boundary between traditional energy and renewable energy will gradually blur, and eventually a new energy system dominated by clean energy will be formed. Investors should grasp this trend and find new growth points and value creation opportunities in energy transition.
In conclusion, the improvement of green power investment returns is not only an economic phenomenon but also an inevitable result of energy transition. Under the strategic framework of coordinated layout of new and old energy, investors can obtain considerable economic returns while ensuring energy security and achieving carbon neutrality goals, achieving a win-win of economic and environmental benefits.
