First Gen to Take 40% Stake in Prime Infra’s 2GW Pumped Storage Portfolio

Why It Matters

The investment expands First Gen’s renewable portfolio while providing critical grid‑balancing capacity that will accelerate renewable integration and reduce reliance on imported fuels in the Philippines.

Key Takeaways

• 40% stake valued at 75 bn pesos ($1.34 bn).
• Projects total 2 GW pumped‑storage capacity.
• Wawa (600 MW) and Pakil (1.4 GW) under construction.
• Completion targeted by December 2030.
• Enhances grid stability for renewable integration.

Pulse Analysis

Pumped‑storage hydropower is emerging as the cornerstone of long‑duration energy storage, especially for archipelagic grids like the Philippines that face intermittent renewable output and limited inter‑island transmission. By storing excess solar and wind generation and releasing it during peak demand, pumped storage smooths supply fluctuations, cuts curtailment, and defers costly transmission upgrades. The country’s ambitious renewable targets and its dependence on imported coal and gas make such flexible resources essential for achieving energy security and decarbonisation goals.

First Gen’s 40% acquisition of Prime Infra’s portfolio signals a strategic shift toward diversified, low‑carbon assets. The deal not only injects capital—62.5 bn pesos earmarked for construction and equity—but also aligns First Gen with seasoned engineering partners: PowerChina will execute EPC works, while Toshiba and Andritz supply key electromechanical equipment. This collaboration leverages First Gen’s generation expertise and Prime Infra’s project pipeline, creating a joint capability to deliver two complex, multi‑year infrastructure projects on schedule and within budget.

When operational, the 2 GW of pumped‑storage capacity will act as a dispatchable buffer, enabling higher penetration of solar and wind farms across Luzon. Grid operators will gain a reliable tool for frequency regulation, peak shaving, and emergency reserve, reducing the need for fossil‑fuel peaker plants. The transaction also deepens the strategic relationship between First Gen and Prime Infra, potentially paving the way for further investments in Southeast Asian energy storage markets. As the Philippines moves toward a greener, more resilient power system, such large‑scale storage projects are poised to become a benchmark for regional energy transition initiatives.