Partners Group has invested over €120m in Gestcompost, Spain’s leading organic waste manager, through a continuation fund structured and managed by Suma Capital.

The transaction gives Partners Group a significant minority stake and two seats on Gestcompost’s board, marking the firm’s latest infrastructure secondaries deal under its Infrastructure Partnership Investments strategy.

Gestcompost, founded in 2003, operates three sites capable of processing 1.2 million tons of organic waste annually, with growing capacity in biomethane and biogas production. Since Suma Capital’s original investment in 2020, the company has tripled its EBITDA and expanded its footprint across the value chain.

The continuation fund structure allows Suma to extend its ownership while unlocking liquidity and institutional capital. Partners Group will support Gestcompost’s next growth phase, including the acquisition of new biomethane plants, increased waste volumes, and operational efficiencies. Alejandro Lafarga, CEO of Madrileña Red de Gas, will join the board as Vice Chairman on behalf of Partners Group.

The investment is set to benefit from regulatory tailwinds in Spain and broader European energy transition targets. Impact investor Blue Earth Capital is also participating in the fund.

This marks Partners Group’s tenth continuation vehicle investment in three years and its second in Spain since 2023. The firm’s Infrastructure business currently manages $27bn in assets globally.