October 4, 2026

Romanian adequacy assessment: Delayed energy transition affects security of supply decisions

In brief

ACER has published an opinion on Romania’s National Resource Adequacy Assessment, which identifies a greater risk of electricity shortages in 2027 and 2035 than the corresponding European assessment. The Romanian analysis attributes this difference to a slower-than-expected energy transition, including delays in renewable deployment and new thermal generation projects, together with conservative assumptions about battery storage, demand response and other non-fossil flexibility. These constraints could complicate Romania’s planned phase-out of coal-fired power generation.

ACER recommends using the latest information on delayed gas-fired projects and renewable expansion, while ensuring that longer-term capacity assumptions remain consistent with expected electrification. It also calls for stronger modelling of battery storage, demand-side response and data-centre flexibility, as well as an assessment of whether projected investments are commercially viable. Romanian authorities are encouraged to update future capacity and demand projections regularly so that national and EU adequacy planning better reflects actual market developments.

Source: ACER

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