Cube Green Energy Raises €150m for Renewables Expansion

• Berlin’s Cube Green Energy lands €150M to scale wind and solar across Europe—pushing 250+MW forward, accelerating financial close to construction and boosting generation capacity.

Cube Green Energy, a Berlin-based developer and operator of wind and solar, has secured EUR 150 million in financing to expand renewables across Europe. The funds are intended to move projects toward financial close, construction and eventual operation, supported by financing and development milestones tied to delivery progress.

Cube said its efforts back more than 250 MW of projects with secured tariffs, with over 150 MW reaching financial close as assets advance. With more than 200 MW in operation generating over 250 GWh annually, its development pipeline exceeds 2 GW, targeting more than 3 TWh per year when completed. Backed by I Squared Capital, Cube is also involved in agrivoltaics via SUNfarming.

How will Cube Green Energy’s €150m financing accelerate Europe solar wind projects to operation?

• Provides “construction-ready” liquidity by funding the development-to-financial-close transition, reducing delays that can push solar and wind assets out of grid and permitting timelines.
  
• Enables faster progression through delivery milestones by tying financing tranches to project advancement (e.g., permitting, grid connection readiness, procurement steps), improving execution discipline across multiple European markets.
  
• Supports scaling of EPC and balance-of-plant commitments, helping projects move from early-stage engineering into turbine/panel orders and construction scheduling.
  
• Strengthens bankability for additional offtake and procurement activity by reinforcing developers’ capital availability—an issue that often slows projects when lenders require stronger evidence of readiness.
  
• Improves cash-flow timing for grid and interconnection dependencies, which are common bottlenecks for both wind farms and solar plants across Europe.
  
• Helps finance site-specific works that can be prerequisites for operation—such as land agreements, grid reinforcement contributions, metering, and system integration—so more projects reach testing and commissioning.
  
• Accelerates portfolio build-out by allowing Cube to keep multiple projects in parallel development and construction, rather than waiting for one project’s revenue stream to fund the next.
  
• Increases likelihood of reaching commercial operation within expected windows, supporting earlier commissioning, performance validation, and revenue start dates for newly built assets.
  
• Expands the developer’s ability to manage supply-chain and cost volatility, using committed capital to maintain schedules for solar modules, inverters, and wind components.
  
• Supports operations-focused development improvements, leveraging lessons from the firm’s existing producing assets to optimize timelines and reduce execution risk in new builds.
  
• Reinforces a growth pathway for additional renewable capacity across Europe by accelerating pipeline conversion—turning pre-development projects into financed, constructed, and operating installations sooner.
• Integrates land-use innovation through agrivoltaics (via SUNfarming), potentially improving local acceptance and siting outcomes that can otherwise slow solar deployments.