1.1

Europe’s transmission and distribution infrastructure is aging and ill-equipped for the required scale of renewable integration1, and most Transmission System Operators (TSOs) are falling short of building sufficient grid capacity to meet national energy targets. For example, Poland is projected to reach only half of its solar and wind goals by 2030 under its current grid expansion plan. These limitations are increasingly material to investors who rely on accurate commissioning timelines to project returns.

TSO grid plans for solar/wind capacity vs 2030 energy policy targets (gigawatts)

Grid connection queues for wind and solar in select countries (gigawatts)

Source: Neuroelectric, BNEF

In the UK, nearly 220 gigawatts of solar and wind projects are in the connection queue, with developers facing average delays of 5.5 years. Similarly, a nearly 900 megawatts offshore wind farm in Germany completed in early 2025 will remain offline until 2026 due to ongoing grid connection works. These delays defer cash flows, introduce macroeconomic exposure (e.g., interest-rate risk, power price volatility) and reduce the attractiveness of merchant-risk profiles.

The impact on valuation is twofold: first, project internal rate of returns (IRRs) are compressed due to increased holding periods and higher interest costs; second, delayed assets lose relevance in rapidly changing price environments, especially when forward price curves shift unpredictably. These factors also complicate debt structuring, increase reliance on sponsor equity and push sponsors toward higher-risk project profiles.

1.2

Periods of overgeneration from intermittent renewables often lead to negative electricity prices, especially in areas with limited interconnection. From January to August 2024, Europe experienced over 7,800 hours of negative pricing, exceeding the combined total from 2019 to 2023. The Iberian Peninsula, with just 3% cross-border interconnection2 versus the EU’s 15% target, was notably impacted.

Negative pricing and curtailment challenge project economics, particularly for investors exposed to wholesale market dynamics. In the absence of hedging mechanisms such as floor-priced power purchase agreements (PPA) or capacity remuneration, returns can be eroded. As a result, some markets may require revised policy support or innovative structuring to sustain investment appetite.

More broadly, negative pricing underscores the mismatch between rapid generation deployment and slower infrastructure adaptation. Investors must assess the curtailment risk of any given project, quantify the impact of seasonal volatility and structure returns accordingly. Merchant models3, while offering upside, need to be backed by sophisticated forecasting and monetization strategies, including flexibility-enhancing co-located storage.

Number of negative price hours in Europe, Jan-Aug

Source: Ember Energy

2.1

Repowering4 enables investors to capture enhanced yields and extend asset life by replacing aging turbines with larger, more efficient models. Leveraging existing infrastructure such as substations and grid connections reduces both capex and permitting timelines. The EU has reduced permitting requirements, and BNEF forecasts 8 gigawatts of repowering in Europe by 2030—equating to over €7 billion in capital needs and €4–5 billion in potential project finance volume.

Germany leads this trend, with investor-backed vehicles actively acquiring portfolios for repowering. One major fund has committed €1.2 billion to a focused buy-and-repower strategy, having completed several deals since 2024.

Beyond the cost and timeline efficiencies, repowering offers more predictable returns. With long-standing yield histories and known site conditions, lenders are more comfortable underwriting leverage. Investors also benefit from more competitive PPAs, as repowered sites often secure improved pricing due to increased capacity and dispatchability. Moreover, repowering allows a natural entry point for long-term infrastructure investors looking to recycle capital into familiar geographies and technologies.

Annual installation of repowered onshore wind capacity in Europe (GW)

Source: BNEF

2.2

Pairing wind or solar assets with battery energy storage systems (BESS) is becoming an increasingly bankable strategy. Storage enhances revenue stability by enabling arbitrage across price periods and mitigating curtailment. The UK’s latest T-4 auction5 awarded 1.8 gigawatts of 15-year contracts to BESS assets, and Italy will initiate MACSE auctions6 in 2025 targeting 50 gigawatts of capacity by 2030.

Wind-solar hybrid projects also allow co-location and shared grid use, optimizing land, capital expenditure and yield. EDP Renewables has delivered over 300 megawatts of hybrid projects across Iberia and Poland, showcasing the viability of this model at scale.

Financial investors are increasingly targeting platform investments that combine generation with flexible capacity, especially as PPAs evolve to reward dispatchability. BESS also opens the door to multiple revenue streams—from capacity markets and frequency response services to day-ahead trading and imbalance mitigation. These diversified earnings are increasingly critical in underwriting long-dated debt and sustaining equity valuations.

Number of European M&A transactions in Battery Storage

Source: Infralogic

2.3

Behind-the-meter renewable generation7 for data centers presents an emerging investment class with contracted, inflation-linked revenues. With AI projected to drive data-center power demand from 62 TWh in 2023 , operators are seeking resilient energy supply models. On-site renewables and microgrids eliminate exposure to grid delays and create long-term offtake certainty.

This model has gained traction in the U.S., with 19% of operators deploying on-site power as of 2024. In Europe, large energy firms are forming strategic partnerships; for example, Vattenfall and Cloud&Heat Technologies linked a biomass plant to a Stockholm data center. These models offer investors stable returns in mission-critical infrastructure backed by strong demand fundamentals.

For financial investors, this space represents a growing intersection of energy and digital infrastructure. The increasing power intensity of AI workloads and edge computing has created a structural need for energy independence, which renewables are uniquely positioned to serve. Paired with long-term offtake agreements and index-linked pricing, behind-the-meter assets can anchor infrastructure portfolios with resilient, low-volatility returns.

Data center energy consumption in Europe (TWh)

Data center energy consumption expected to increase from 62TWh in 2023 to 150TWh in 2030

Source: McKinsey

3.1

The European Commission’s upcoming Grids Package (Q1 2026) is expected to introduce permitting streamlining, standardized tender frameworks and incentives for co-located storage. Investors should monitor national-level implementation closely, as grid-priority schemes and capacity payments can significantly enhance project bankability.

Governments are also increasingly aware of the role institutional capital must play in infrastructure build-out. New de-risking mechanisms—such as Contracts for Difference (CfD) expansions, availability-based support for storage or guarantees for merchant tail revenues—are being piloted by private capital.

3.2

In response to these dynamics, platform-level M&A is accelerating. Investors are actively aggregating repowering-eligible portfolios, acquiring hybrid-ready sites and partnering with corporate offtakes. Valuations continue to favor buyers who bring integration or development capabilities.

Mid-cap developers with grid-ready land banks, permitting expertise or operational BESS assets are increasingly sought after. Consolidation in this space is expected to continue, particularly as private equity funds seek exit options via trade sales or IPOs once equity capital markets re-open to this segment.

3.3

As project risk profiles evolve, so must financing structures. Hybrid projects and storage-backed PPAs often require more bespoke debt packages, blending merchant exposure with contracted revenue floors. Structured equity, holding company financing and tailored mezzanine tranches are becoming essential tools for sponsors aiming to optimize capital stacks.

Investors who can underwrite both technology and regulatory risk are best positioned to capture premium returns in the current environment.