Why hybrid renewable assets are greater than their parts

The transition to renewable energy is accelerating, and hybrid renewable assets are emerging as a smart solution to improve efficiency, sustainability and project returns.

By combining different energy sources like solar and wind with batteries, these systems unlock synergies that deliver greater reliability, adaptability, and value. For buyers and sellers, understanding how to prepare and execute transactions for hybrid assets is key to a successful deal.

What is a hybrid asset?

Hybrid assets bring together renewable generation, such as solar PV or onshore wind, with battery energy storage systems (BESS), creating a unified asset that operates as one system. These assets share a grid connection point and are often located in close proximity to each other, but their configurations can vary widely depending on metering, system controls, charge management, and market access, which are the result of local regulations, technical requirements, and market demands.

In practice, a hybrid configuration may combine joint or separate control concepts, and can be classified under different regulatory frameworks, such as “green,” “grey,” or “mixed” power. This diversity in configuration means that each hybrid project presents unique opportunities and challenges. Choices about technology, location, control philosophy, and regulatory classification all influence the business case, risk profile, and value creation potential for developers and investors. Understanding these distinctions up front is key to designing a hybrid asset that delivers resilient performance and meets changing market needs.

Why and where are they gaining traction?

Across Europe, hybrid projects are moving from pilot initiatives to the market standard.

Leading markets: In places like Spain and Greece, hybrid assets are now the default. This is driven by both economic need and supportive regulations that prioritize projects combining renewables and storage. These markets benefit from clear permitting and grid processes and a history of successful projects.

Frontier markets: Countries like Germany and Denmark are also seeing strong momentum. Here, the business case for hybrids depends on being able to work with different revenue streams, including complex "power color" frameworks. These markets have established supportive foundations on the regulatory and commercial side, but have not yet reached the full volume of transactions we one day expect.

Emerging markets: The Nordics, the Netherlands, and Poland show high potential. Early projects prove that hybrids can add value even with more cautious regulations or support programs. These regions are learning the importance of teamwork and solid design, which paves the way for wider use.

With the due diligence procurement season underway, it's important to act now. Taking a complete approach to design, permitting, and financing ensures you can seize opportunities and avoid costly delays as the market evolves.

The hidden complexities of hybrid assets

When you combine a renewable energy source with BESS, you create new challenges. Hybrid assets are complex and treating them as the sum of two separate technologies is a recipe for overlooked risks. There are interface risks between contractors, a more complicated regulatory landscape, and technical hurdles in ensuring a reliable grid connection.

These risks can hide within the traditional due diligence process, where commercial, technical, and regulatory work is handled in separate silos. The handoffs between these workstreams can create dangerous blind spots, especially when commercial revenues, technical performance, and regulatory requirements are so critically interlinked. For example, a technical team might recommend a system optimized for a set duration, but if that construction does not align to the grid connection agreement, the project’s financial viability can quickly unravel.

Why do hybrid renewable assets need integrated due diligence?

Successful hybridization means understanding that one plus one equals one. A hybrid asset isn't just wind or solar plus storage; it's a unique, single asset class that requires a unified approach to design, delivery, and due diligence. As developers and investors accelerate the deployment of these projects, moving beyond a siloed mindset is key.

How to turn due diligence into a value-creation tool?

Transforming due diligence from a checklist into a tool for creating value starts with an integrated, forward-looking approach. Instead of treating technical, commercial, and regulatory reviews as separate tasks, successful teams blend these perspectives early and often.

This integrated approach helps you address bankability, executability, and exit readiness as a whole. It allows teams to spot efficiencies, like optimizing shared infrastructure and clarifying regulatory pathways, that siloed teams often miss.

Lessons learned from recent projects

AFRY’s recent projects in the energy sector have highlighted the power of collaboration and innovation. By examining these cases, we can uncover practical insights and strategies that drive efficiency, reduce costs, and prepare infrastructure for future challenges.

Align technical and regulatory planning from day one

In Spain, we saw projects benefit from streamlined permitting, but they still had to navigate strict local requirements for grid connections and environmental approvals. A project's early-stage decisions about location and technical design directly influenced the path to regulatory compliance and the timeline for revenue. This experience taught us that aligning technical choices with market and regulatory factors from the start is key to protecting long-term value.

Proactively manage the interfaces

Projects in the Nordics highlighted the importance of managing interface risks, especially when integrating wind, solar, and storage on shared infrastructure. We found that strong collaboration between contractors, early alignment on design, and a clear control philosophy helped avoid scope gaps, cost overruns, and delays. Proactively addressing these interfaces during due diligence pays off in project bankability and smooth execution.

Build in optionality to navigate shifting regulations

In Germany, a key challenge was adapting to a complex and evolving regulatory landscape. Shifting rules for grid connections, market participation, and support schemes meant that what worked yesterday might not be enough tomorrow. We helped our client make "no-regrets" investments like future-proofing grid connection risk through metering design to ensure their assets remain competitive and compliant as the market changes.

Each of these projects points to a central lesson: a proactive, integrated approach to diligence helps surface issues early, reveals opportunities, and delivers hybrid assets ready for today's dynamic markets.

Tips for success in hybrid due diligence

Achieving success in hybrid due diligence takes more than a routine checklist—it demands a holistic, integrated approach. Here are some actionable tips to help boost the value and resilience of your hybrid projects:

Start early with cross-functional collaboration

Involve technical, commercial, regulatory, and market experts from the earliest project stages. Open communication among workstreams helps catch overlaps and gaps before they create risks down the line. Don’t just assess risks in silos. Combine insights across technical, commercial, and regulatory domains to build a full picture of exposure and resilience—and use this view to drive design and investment decisions.

Focus on the full asset, not just its constituent components

Look beyond initial compliance or construction to understand how grid connection agreements, control systems, and permitting will impact operations, revenue streams, and long-term value.

Prioritize flexibility and optionality

Regulations and market conditions change fast. Make "no regrets" investments, such as future-proofing grid infrastructure and keeping metering adaptable, so your assets stay bankable even if requirements shift.

Align diligence with financing and exit plans

A robust due diligence process considers not only initial execution, but also what investors and buyers will demand for bankability and transaction readiness at exit. Ensure your project meets these evolving standards from day one.

By weaving these practices into your hybrid due diligence, you’re setting the stage for stronger projects, reduced surprises, and a smoother path to market success.

How AFRY can help

Navigating renewables, energy storage, and hybrid solutions requires both technical depth and commercial insight. AFRY supports clients across the full project lifecycle, bridging complex engineering requirements with commercial and financial expectations.

We help identify risks early, address regional market differences, and support decision-making that leads to resilient, bankable projects. Working with developers, investors, financiers, and utilities, we provide integrated advisory, due diligence, asset valuation, and market analysis to support successful investments throughout the energy transition.