Bank Guarantees in the Energy Sector: Between System Security and Investment Reality

As someone who has been involved for years in the development of energy projects and the regulatory framework in which they emerge, I have often had the opportunity to see how the success of an investment depends not only on technology and the market, but also on the rules governing the financial security of projects. One of the instruments that has recently gained increasing importance in the energy sector, not only in Serbia but across the region, is bank guarantees in the grid connection process managed by transmission system operators. Although at first glance this may seem like a technical financial issue, in practice bank guarantees have a much broader impact on investment security, project development, and the functioning of the power system.

In general terms, a bank guarantee is a financial security instrument by which a bank guarantees that an investor will fulfill certain contractual obligations. In the energy sector, they are most commonly used in auction procedures for the allocation of incentives and apply only to auction participants. However, bank guarantees related to the connection of power plants to the transmission system represent an obligation for investors of all such plants. Their primary purpose is to ensure that an investor who reserves network capacity actually implements the project, preventing the power infrastructure from being blocked by projects that will never be built, which was often the case before this instrument was introduced.

This mechanism is particularly important in the context of the accelerated development of renewable energy projects. In recent years, there has been significant investor interest in building solar and wind power plants in Serbia and the region, creating substantial pressure on existing transmission network capacities. In such circumstances, system operators must have instruments that ensure network capacity is reserved for projects with a realistic chance of being implemented.

For this reason, the regulatory framework requires the submission of a bank guarantee after the issuance of the connection study. This obliges the investor to confirm the seriousness of their investment intention and their readiness to continue project development in line with their commitments. The amount of the bank guarantee is set at 25,000 euros per megawatt of approved connection capacity for facilities connecting to the transmission system, which represents a significant financial commitment for larger projects.

From the perspective of system operators, this instrument has a clear function: preventing so-called “network blocking” by projects that are in an early or speculative stage of development. However, from the investor’s perspective, the question arises whether the timing of the bank guarantee requirement is always aligned with the actual pace of energy project development.

The development of a power plant, especially one based on renewable energy sources, is a complex and lengthy process. Before a project reaches the financing and construction phase, the investor must go through a series of regulatory and technical steps, including spatial planning documentation, resolution of property rights, obtaining permits, preparation of technical documentation, and other procedures. During this period, project development risks remain relatively high, while financing from development or commercial banks typically becomes available only at a later stage, once key regulatory risks have been resolved.

Some countries in the region have similar solutions and require bank guarantees, but the timing of when this financial instrument is submitted varies. For example, North Macedonia requires a bank guarantee of 25,000 euros per megawatt at the stage of issuing authorization for the construction of energy facilities by the Ministry of Energy, after the investor has obtained a construction permit. This approach fails to introduce an earlier screening mechanism during the grid connection process, which is not favorable either for investors or for the state, as it does not prevent network capacity from being occupied by projects that will not materialize in practice.

This is precisely why bank guarantees are not only a financial issue but also a regulatory one. Although investors in Serbia are required to provide bank guarantees at an early stage, all serious players in the sector recognize that such regulation makes sense for both the state and investors. In addition to protecting the transmission network from overload, the level of bank guarantees has proven effective in reducing speculative activity from the outset, ensuring that only serious projects and investors remain in the market.

On the other hand, since the bank guarantee is required at a stage when the project has not yet reached the level of maturity necessary for bank financing, investors face a significant financial burden. By providing the guarantee, they commit to obtaining the connection approval, constructing the plant, and connecting it within prescribed deadlines. Failure to meet these deadlines results in the expiration of the connection study and the collection of the bank guarantee. However, meeting these deadlines does not depend solely on the holder of the connection study, but also on the actions of competent state and local authorities within legally prescribed timeframes, which introduces an additional risk beyond the investor’s control.

Given all of the above, and the fact that energy projects take years to develop and require significant upfront investment before reaching the construction phase, the stability of rules, predictability of the regulatory environment, and consistent implementation are among the key factors for attracting investment in the energy sector.

In the context of the energy transition, Serbia will need to significantly increase its renewable energy generation capacity in the coming years. Private investments will play a crucial role in this process, and their scale will largely depend on how clear, stable, and predictable the regulatory framework is.

Bank guarantees can certainly be a useful instrument for managing the development of energy projects and ensuring the rational use of power grid capacity. However, their application must be carefully designed to simultaneously protect the system and enable the development of new investments necessary for the energy transition.

Therefore, it is important to discuss these instruments not only from a financial perspective, but also from a broader energy and investment standpoint. Ultimately, the success of the energy transition depends not only on the technologies we use, but also on the rules that shape the market and the confidence investors have in the stability of that system.