Green Capital Enlists EPC Electrum for 320MWh Poland BESS, Under Full Wrap for ‘Cost Predictability’

Why It Matters

The project showcases how integrated EPC‑wrap contracts can de‑risk large‑scale storage deployments, accelerating Poland’s transition to a flexible, renewable‑heavy grid. It also signals investor demand for end‑to‑end service guarantees in the rapidly expanding European BESS market.

Key Takeaways

• Green Capital selects full‑wrap EPC model for 80 MW BESS
• Electrum will handle procurement, installation, grid integration, and O&M
• Poland’s capacity‑market auctions have earmarked ~11 GW BESS potential
• Digital platforms PPC Renedium and EMACS boost market‑efficient operation
• Project slated for commissioning June 2027, operational Q3 2027

Pulse Analysis

The full‑wrap EPC model adopted by Green Capital and Electrum reflects a shift away from traditional multi‑contracting, where separate firms supply the battery and perform construction. By bundling procurement, high‑voltage infrastructure, grid connection and a five‑year operations‑and‑maintenance contract, the wrap reduces interface risk, simplifies project management, and delivers a single price point for the entire lifecycle. Investors increasingly favor this approach because it offers transparent, predictable costs and aligns the contractor’s incentives with long‑term asset reliability, a critical factor as storage facilities become revenue‑generating market participants.

Poland has emerged as a European hub for large‑scale battery storage, driven largely by the state‑run capacity‑market (CM) auctions that guarantee revenue streams for qualified projects. Since 2022, successive auctions have allocated roughly 11 GW of BESS capacity when de‑rating factors are considered, creating a pipeline of projects that are financially viable under the CM framework. However, the 2025 auction saw a sharp decline in awarded capacity due to a de‑rating cut, underscoring the market’s sensitivity to policy adjustments. Green Capital’s entry into this space with a high‑visibility 80 MW project signals confidence in the long‑term stability of Poland’s CM scheme and may encourage other developers to pursue similar wrap contracts.

Electrum’s inclusion of proprietary digital tools—PPC Renedium for market operation and EMACS for EMS/SCADA control—adds a technology layer that can enhance the BESS’s profitability. Advanced analytics and real‑time monitoring enable the storage unit to respond swiftly to price signals, optimize dispatch, and meet performance guarantees. As European grids increasingly rely on storage to balance intermittent renewables, such digital integration becomes a competitive differentiator. The Green Capital‑Electrum partnership therefore not only delivers a physical asset but also embeds the software capabilities needed for future‑proof, market‑efficient energy storage in Central and Eastern Europe.