Serbia’s green power crunch: how grid constraints could shape CBAM costs for heavy industry

Serbia’s energy transition is colliding with a more immediate compliance reality for its most export-exposed industries. With the EU tightening Carbon Border Adjustment Mechanism requirements, heavy manufacturers are increasingly judged not only by how much electricity they use, but by whether they can secure verifiable green electrons—an operational constraint that can translate directly into export costs.

CBAM turns “green electricity” into a supply-chain requirement

For steel, aluminium, cement and fertiliser plants that have historically relied on cheap coal-fired power, the question has shifted from simple procurement—“How much electricity can we buy?”—to a more specific one: “How much verifiable green electricity can we secure?” In practice, this turns clean-power availability into an input cost and a compliance variable.

Under current-style export patterns, Serbia’s main heavy-industry exporters are estimated to require roughly 1.1–1.8 TWh of green electricity per year. Forward-looking estimates suggest this could rise to about 1.5–2.5 TWh per year by 2028–2030 as EU buyers apply stricter CBAM-linked carbon proofing across supply chains.

HBIS Smederevo is identified as the largest single anchor for that demand, with industry-aligned analyses placing its green-electricity need in the range of 660–990 GWh per year. Without a credible way to allocate and attribute green power, CBAM-linked carbon fees on exports would increase, squeezing margins and potentially weakening competitiveness in the EU market.

Renewables are growing—but dispatchable clean power is still limited

Serbia’s installed renewable capacity is currently about 3.9 GW, combining hydro, wind, solar and a small share of bioenergy. Hydro provides most of generation, while wind and solar are still scaling up. The source notes that expansion can be constrained by grid-capacity rules and local-government permitting.

The national energy plan targets renewables reaching around 45% of electricity generation by 2030. It is supported by new wind and solar projects and includes roughly 1 GW of new solar capacity paired with storage, alongside broader grid-modernisation efforts. On paper, that trajectory could align with the envisioned green-electricity bill for heavy industry.

But the practical bottleneck is described as grid capability rather than headline renewable capacity. The backbone system remains geared toward coal-centric baseload operations rather than managing variable wind and solar flows. Transmission constraints and balancing-market rules mean that even when renewables are producing, not all output can be routed smoothly to large industrial consumers at the specific hours they need it.

The “green-power gap” depends on timing and allocation

A realistic scenario presented in the source suggests Serbia’s renewable-plus-hydro generation could cover today’s estimated 1.1–1.8 TWh/year demand from major industrial exporters—if new wind and solar projects are delivered on schedule, the grid receives 400 kV reinforcements alongside smart-grid tools, and there is a clear allocation mechanism that routes available green power to prioritised CBAM-exposed plants.

However, if exporters attempt to fully “green” all consumed electricity simultaneously across sites, physical and regulatory limits quickly emerge. The grid cannot instantly absorb every planned renewable project at once, and the current regulatory framework is described as better suited to targeted allocation than universal 100% green-only coverage overnight.

This creates what the source characterises as an emerging “green-priority” hierarchy: companies that move early may secure contracts with definable green-origin attribution and align with state-backed investment corridors. Those that wait risk being rationed by scarcity conditions tied to CBAM-linked carbon costs—reflecting both certification realities and access constraints during a transition period.

The race toward 2030 is about coordination as much as generation

By the late 2020s, Serbia has a plausible pathway to bridging its green-power gap for major exporters through accelerated renewables deployment, grid hardening and explicit CBAM-aligned green-power schemes. The longer-term prize would be positioning Serbia as a low-carbon industrial hub supplying EU-facing industries with credible shares of cleaner electricity.

Still, the source frames the central issue as coordination speed: aligning investors, regulators, grid operators and large industrial buyers quickly enough to convert clean-power potential into contracts that actually shield heavy industry from CBAM’s impact. For exporters now, competitiveness hinges less on whether Serbia has wind or sunshine—and more on whether it can certify access to the right electrons at the right time through workable allocation arrangements.