Premium Stack Strategy Boosts Southeast Europe Renewable Returns Amid Coal Decline and CBAM

**TL;DR** New integrated strategies are critical for renewable energy projects in Southeast Europe, leveraging technology and specific contracts to enhance profitability.

The energy landscape in Southeast Europe is undergoing a significant transformation, prompting a strategic shift for renewable energy developers. Previously, simple standalone renewable projects offered viable returns. However, grid curtailment issues and increasing competition have complicated these models, demanding more sophisticated approaches.

Serbia illustrates this shift directly. In 2024, brown coal and lignite still constituted 61.03% of the nation's electricity mix. Wind and solar power, by contrast, contributed only 4.24% in the same period, highlighting a substantial reliance on carbon-intensive sources.

Compounding these market dynamics, the Carbon Border Adjustment Mechanism (CBAM) entered its definitive phase on January 1, 2026. This mechanism requires importers of certain goods, including electricity, to purchase and surrender carbon certificates corresponding to their embedded emissions. This significantly impacts regional industries heavily reliant on carbon-intensive power, converting electricity procurement from a commodity purchase into a compliance mandate.

To counter these challenges and enhance project viability, developers are adopting a "Premium Stack" strategy. This layered approach integrates various solutions to optimize returns and manage risk. Co-locating battery storage, for example, is a core component of this strategy.

Integrating battery storage with renewable projects can increase a project's internal rate of return (IRR) by 150-250 basis points. This enhancement occurs by shifting electricity generation from periods of low demand to peak consumption hours, capturing higher prices for the power generated.

Beyond batteries, this strategy often includes agrivoltaic dual-use models, which help bypass land-use objections and accelerate permitting, and long-term industrial electricity contracts. These industrial Power Purchase Agreements (PPAs) are increasingly driven by CBAM, as regional industries seek verifiable low-carbon electricity to minimize their border tax exposure. This means industrial entities, previously focused solely on energy cost, now prioritize compliance and low-carbon sourcing to avoid significant border taxes.

The Premium Stack approach redefines profitability for renewable projects in the region. It moves beyond simple generation to a more complex, resilient architecture designed for the evolving market. Watch for wider adoption of these integrated strategies as Southeast Europe navigates its energy transition and adapts to global carbon pricing mechanisms.