Serbia is moving towards an electricity market in which companies may buy power from one supplier while allowing a separate aggregator to monetise their flexible consumption, opening a new competitive layer between industrial customers and wholesale power markets.
The Energy Agency of the Republic of Serbia, AERS, is completing consultation on rules governing supplier and aggregator switching, with the consultation closing on Sept. 30. The draft covers aggregator changes even where a customer already has a full electricity-supply contract.
The significance is larger than the switching procedure itself.
Serbia’s Energy Law already defines an independent aggregator as an aggregator that is not connected with a customer’s electricity supplier. It allows aggregators to participate in electricity markets without the consent of other market participants and protects customers using independent aggregators from unjustified charges, penalties or contractual restrictions imposed by suppliers.
The new rules could provide part of the operational framework needed to turn those legal rights into a customer-facing business.
Under the emerging model, an industrial company could continue purchasing electricity from its existing supplier while contracting another company to manage flexible loads.
The aggregator could combine controllable equipment across multiple customers and offer that portfolio into markets where flexibility has value.
Potential resources extend well beyond conventional generation.
Industrial refrigeration, water pumping, furnaces, electric boilers, HVAC systems, cold storage, onsite generation and eventually commercial EV fleets could be grouped into portfolios capable of increasing or reducing demand in response to market conditions.
This effectively creates two electricity relationships.
The supplier manages energy procurement and billing. The aggregator manages flexibility.
For Serbian industrial consumers, that distinction could eventually turn equipment already installed inside factories into a source of additional revenue without requiring customers to become electricity traders themselves.
A plant capable of reducing 2 MW for a limited period, for example, may have little reason to build its own trading operation. An aggregator combining dozens of similar sites could create a portfolio large and reliable enough to participate commercially.
Scale is therefore central to the business model.
Individual loads may be too small or unpredictable to trade efficiently. Aggregation converts them into a virtual resource that can be forecast, dispatched and measured as one portfolio.
The value of the aggregator consequently lies less in ownership of physical assets than in contracts, software, telemetry, forecasting and market access.
That could attract a different group of participants into Serbia’s electricity sector: specialised aggregators, energy-service companies, technology providers and existing suppliers creating separate flexibility businesses.
It may also intensify competition for industrial customers.
Electricity suppliers have traditionally competed primarily through commodity pricing, contract structure and balancing conditions. Aggregation creates another commercial proposition: how much additional value can be extracted from the customer’s consumption profile.
A supplier might therefore offer energy plus flexibility optimisation, while an independent aggregator could argue that separating the two services creates stronger competition.
Several market elements still need to mature before Serbia develops a liquid independent-aggregation sector.
Metering, baseline calculation, verification, balancing responsibility, data access and technical requirements for individual market products will determine how easily aggregated demand can participate.
The Energy Law already places balancing responsibility on aggregators for deviations they cause.
That is important because aggregation cannot work commercially if customers can simply promise flexibility without measurable delivery.
The emerging market will therefore require increasingly granular metering and automated control.
For larger industrial consumers, this could link directly with energy-management systems already used to monitor production, electricity costs and onsite generation.
Over time, the aggregator could become the interface connecting those internal systems with external electricity markets.
The AERS switching framework will not create that market overnight.
But it addresses one of the basic commercial questions required for independent aggregation: can the customer change its flexibility provider without changing the company supplying its electricity?
As that separation becomes operational, Serbia moves closer to a market where electricity consumption itself can be contracted, aggregated and traded as a separate energy service.
