Auctions and Contracts for Difference (CfDs) are becoming one of the most important tools for renewable energy financing in South East Europe. While they do not eliminate every project risk, they fundamentally change the risk profile of renewable investments, helping developers secure cheaper capital and making projects more attractive to lenders.
The value proposition differs across stakeholders. Developers gain revenue stability, lenders benefit from improved bankability, governments achieve competitive price discovery, and consumers can ultimately benefit from lower long-term electricity costs and reduced exposure to wholesale market volatility.
Romania has emerged as the regional leader in this transition. Supported by the European Bank for Reconstruction and Development (EBRD), the country has successfully delivered two renewable energy auctions under its CfD framework, awarding approximately 4.2 GW of solar and wind capacity and surpassing the 3.5 GW target set under its Recovery and Resilience Plan.
The second auction alone allocated 2,751 MW of CfD-backed capacity and attracted bids exceeding 5,500 MW, demonstrating strong investor appetite and intense competition among renewable developers.
This represents a major shift in the Romanian market. The country is no longer viewed solely as a merchant-renewables opportunity dependent on wholesale power prices. Instead, it is becoming an auction-backed investment market where projects can be financed with significantly greater revenue certainty.
The importance of the CfD model becomes especially evident during periods of market volatility. Under a two-way CfD mechanism, developers receive compensation when market prices fall below the strike price, while returning revenues when prices exceed that level. This creates downside protection for investors and upside protection for consumers.
The impact on project financing is substantial. Renewable assets supported by long-term CfD contracts can typically sustain higher debt levels, lower equity risk premiums, and attract a broader range of lenders and institutional investors.
A clear example is the financing package supporting 531 MW of solar capacity in Romania. The flagship Slobozia project benefits from a 15-year CfD, while the remaining projects rely on merchant revenues. The transaction demonstrates how revenue certainty can strengthen project finance structures and improve investment attractiveness.
Serbia is also moving toward a more bankable renewable energy market. The country’s second renewable energy auction attracted 41 project proposals, awarded support for up to 645 MW of new capacity, and delivered highly competitive prices, including bids of approximately €50.9/MWh for solar and €53.6/MWh for wind.
The significance extends beyond Serbia itself. As the largest power system in the Western Balkans outside the European Union, Serbia serves as a critical benchmark for renewable energy investment across the region. Competitive auctions, market premiums, and more transparent offtake structures can improve investor confidence and reduce reliance on ad hoc bilateral agreements.
Auctions also introduce greater discipline into project development. Competitive tenders reward projects that are genuinely ready for execution, including those with secured land rights, advanced permitting, grid connection agreements, realistic cost assumptions, and credible financing plans.
At the same time, aggressive bidding can create significant risks. Developers that underestimate construction costs, financing expenses, or delivery timelines may face serious pressure on project economics. Auctions improve bankability, but they also expose unrealistic assumptions and weak project fundamentals.
Several challenges remain.
First, strike prices must remain high enough to ensure project delivery. While low auction prices may appear politically attractive, they offer little value if awarded projects fail to reach financial close or enter commercial operation.
Second, grid infrastructure must keep pace with renewable deployment. Awarding gigawatts of new capacity without corresponding investment in transmission and distribution networks risks congestion, curtailment, and delays that can undermine investor confidence.
Third, auction frameworks must adequately address inflation risk, foreign-exchange exposure, balancing obligations, commissioning deadlines, and the growing challenge of negative electricity prices.
A fourth challenge concerns energy storage. As renewable penetration increases, storage will become an essential component of system flexibility. Future auction rounds may need to support hybrid renewable-storage projects or create incentives for technologies that provide balancing and grid-support services.
The rise of auctions and CfDs is also reshaping renewable energy mergers and acquisitions. Projects that secure long-term CfD contracts become easier to finance, sell, and refinance because future revenue streams are more predictable.
Developers may increasingly focus on originating, permitting, and de-risking projects before selling them to utilities, infrastructure funds, or institutional investors. Strategic buyers often prefer auction-backed assets with lower revenue uncertainty and more stable cash flows.
However, stability comes with a trade-off. Projects operating under CfDs generally offer lower returns than fully merchant assets because developers surrender part of the upside associated with high market prices in exchange for greater financing certainty and reduced risk exposure.
For South East Europe, the broader conclusion is becoming increasingly clear: auctions and Contracts for Difference are emerging as the bridge between policy ambition and private capital.
Countries capable of designing credible, transparent, and investor-friendly auction frameworks are likely to attract lower-cost financing and accelerate renewable deployment. Those that delay reforms or maintain unstable regulatory environments may become increasingly dependent on state utilities, development finance institutions, and opportunistic capital.
The next phase of renewable energy policy should not focus solely on larger auction volumes. Instead, it should prioritize better auction design—frameworks that are bankable, grid-aware, storage-compatible, and transparent.
South East Europe possesses abundant renewable energy potential. The challenge is no longer identifying resources. The challenge is converting that potential into financeable projects that can be built, connected, and operated successfully. Well-designed CfD schemes remain among the strongest tools available to achieve that goal.