EGCO Group Closes 49% Stake in U.S. 339 MW Wind and Solar Farm Portfolio, “Pinnacle IV”, Boosting Overseas Green Energy and Earnings

Focusing on increasing clean energy capacity globally and seizing ‘Gold Standard’ growth opportunities driven by Data Centers and AI expansion.

Electricity Generating Public Company Limited or EGCO Group has reinforced its commitment to driving the organization toward a low-carbon society by announcing the successful completion of its 49% membership interest acquisition in the Pinnacle IV Portfolio comprising two operating renewable energy projects with an aggregate generating capacity of 339 MW in the United States. The investment enables EGCO Group to immediately recognize cash flows and share of profit, reflecting disciplined and proactive capital allocation. The company continues to relentlessly expand its green energy portfolio both domestically and internationally with high-quality assets backed by long-term power and environmental attribute offtake arrangements with investment grade offtakers in the PJM and MISO markets. This transaction boosts EGCO Group’s total renewable energy capacity to 1,785 MW, accounting for 26% of its overall equity capacity.

Mr. Tawatchai Sumranwanich, President of EGCO Group, confidently stated, “EGCO Group maintains a clear strategic direction and policy to accelerate the expansion of our green energy portfolio across both domestic and international projects. The acquisition of the Pinnacle IV Portfolio represents another major milestone under our “POWER4” strategy, which emphasizes “Profitability and Performance Energizing.” We selectively invest in high-quality, commercially operating renewable assets to foster balanced growth, elevate our clean energy proportion worldwide, and enhance the company’s long-term earnings stability.”

The investment was made through EGCO Pinnacle IV, LLC, a wholly owned subsidiary of EGCO. The transaction to acquire the 49% membership interest was officially completed on 25 September 2026, alongside its global project development partner, Apex Clean Energy Holdings, LLC, which retains the remaining 51% membership interest.

3 Strategic Highlights: Strengthening Green Energy Portfolio in the Largest U.S. Power Markets

The Pinnacle IV Portfolio consists of the 189 MW Timbermill Wind facility in the state of North Carolina and the 150 MW Coldwater Solar facility in the state of Michigan. The portfolio features three key financial and operational strategic highlights:

• Immediate Revenue Recognition with Zero Development Risk (Commercialized Assets):
  As both projects are already in commercial operation, they generate immediate returns and cash inflows to EGCO Group starting from the transaction closing date.

• Strategic Footprint in the Largest U.S. Clean Power Markets (PJM & MISO): Situated in the States of North Carolina and Michigan, these assets operate in regions with strong electricity demand and reliable grid infrastructure designed to support clean energy growth.

• Stable Cash Flows Backed by Long-Term Contracts with Investment-Grade Offtakers: The facilities are secured with long-term power and environmental attribute offtake arrangements and Renewable Energy Certificates (RECs) contracts with investment-grade offtakers, ensuring stable and predictable revenue streams over the long run to build a solid foundation for New S-Curve growth in the U.S. market.

Synergizing Thai and Overseas Portfolios Toward a ‘Gold Standard’ Low-Carbon Organization

Mr. Tawatchai concluded, “EGCO Group will continuously advance our green energy portfolio by preparing for upcoming domestic renewable power tenders (PDP 2026 / Direct PPA) while aggressively expanding clean energy assets abroad, particularly in the U.S., which serves as our secondary strategic base.”

“The strategic synergy between the Pinnacle IV Portfolio and our existing power portfolio, including Apex Clean Energy, Pinnacle II, Linden Cogen, and the Compass Portfolio, creates a highly flexible and resilient portfolio structure. This positions EGCO Group to effectively respond to the megatrend of surging green electricity demand, driven by the rapid growth of Data Centers, AI technology, and future industries. It further underscores our strict financial discipline and unwavering commitment to delivering sustainable, ‘Gold Standard’ returns to our shareholders.”

About EGCO Group

As of 28 September 2026, EGCO Group has a total equity contract capacity of 6,928 MWe (comprising both operating assets and projects under construction), with renewable energy accounting for 1,785 MWe (representing 26% of the total capacity) across biomass, hydropower, solar, onshore and offshore wind, fuel cells, and battery energy storage systems. Beyond the power business, EGCO Group operates energy-related businesses covering fuel and utilities infrastructure, customer solutions, and startup businesses. Its power and energy-related investments span 7 countries: Thailand, Lao PDR, the Philippines, Indonesia, South Korea, Taiwan, and the United States. EGCO Group has been selected for the global Dow Jones Best-in-Class Indices (DJ BIC) 2026 in the Electric Utilities category for the Emerging Markets Index, achieving the highest score in its peer group. It has also been included in the Dow Jones Sustainability Index (DJSI) for five consecutive years.