AES Bulgaria to move TPP Galabovo into standby after NEK power contract expires

AES Bulgaria is preparing to wind down operations at one of the country’s major coal-fired power stations, moving TPP Galabovo into conservation (standby) mode once a long-term electricity supply agreement expires. The decision underscores how contract structures and revenue certainty can determine whether thermal assets remain viable as market conditions change.

Contract termination drives economic shutdown

The move follows the termination of a power purchase contract with NEK (National Electricity Company), the state-owned utility that previously provided stable revenues through fixed-price electricity sales. Without that arrangement, AES Bulgaria said continued operation has become economically unviable.

Standby transition and workforce impact

AES Bulgaria expects the transition to standby status within the coming weeks. While electricity production will stop, a significantly reduced workforce will remain on site to carry out basic maintenance and technical preservation of the facility. Available information indicates that approximately 350 employees will be affected by the shutdown process.

Talks continue on potential future role

Although generation will be halted, AES Bulgaria indicated that discussions are ongoing with the Bulgarian government and industry stakeholders. The stated objective is to explore mechanisms that could allow TPP Galabovo to play a future role in maintaining national energy system stability, potentially under a revised operational or regulatory framework.

What Galabovo has meant for Bulgaria’s power mix

TPP Galabovo has been an important component of Bulgaria’s electricity generation mix. The plant produced around 2.62 million MWh in 2025—equivalent to roughly 7% of national electricity consumption—so its closure marks a meaningful step away from coal capacity in the country.

AES continues renewable generation

Alongside the planned standby move for Galabovo, AES Bulgaria continues operating its renewable assets in Bulgaria. Its Sveti Nikola wind farm near Kavarna remains a key source of green electricity, generating over 284,000 MWh last year, with particularly strong performance recorded in December.

For investors and policymakers alike, the development highlights how thermal plants increasingly depend on supportive commercial terms or system-service frameworks to justify continued operation—especially when long-term procurement arrangements end.