REMARC 2026Review copy
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Chapter 03

Renewables & Storage

A record project pipeline, a prosumer boom and a tripling of storage: how renewables reshaped Romania’s power system in 2025, and why flexibility is now the binding constraint.

  1. In this chapter
  2. Key facts32
  3. RES in the EU energy mix33
  4. Energy storage outlook34
  5. RES generation by DSO35
  6. RES share & 2050 targets36
  7. RES project pipeline37
  8. Prosumers by DSO38
  9. Prosumer forecast to 203039
  10. Prosumer capacity & storage40
  11. Prosumer output by county41
  12. Negative-price hours42
Renewables & Storage31
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Key facts
Renewables 2025

Four numbers that summarise Romania’s renewables and storage market this year. Each one links to the page where the evidence sits.

RES connection permits (ATR), Mar 2026
86GW

Romania’s renewable project pipeline expanded rapidly, reaching advanced permitting stages.

RES project pipeline, GW · p. 37
Solar share of DSO RES output, 2025
79%

Solar dominates distributed generation, while regional deployment remains highly uneven.

Solar generation by DSO, GWh · p. 35
RES share in electricity generation, 2025
67.5%

Renewable electricity shares remain high, but trail recent EU levels.

RES share, EU vs Romania · p. 36
Installed storage, Dec 2025
494MWh

Storage capacity more than tripled, yet remains below national targets.

Storage vs 2030 targets, MWh · p. 34
Romanian Energy Market Annual Report32
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EU comparison

Compared to a decade ago, the share of renewables in the energy mix in EU27 has risen by 42%, standing at 25% in 2024

EU-27 share of renewables in the energy mix · %, 2015–2024

Fig. 3.1
Source: to be confirmed by CIGA

Share of renewables in the energy mix by EU member state · %, 2024

Fig. 3.2
Source: to be confirmed by CIGA
  • After the COVID-19 pandemic plateau, the share of renewables in the energy mix has been steadily growing.
  • Nordic countries hold the highest share of renewables in their energy mix, due to high PHS usage for electricity generation.
  • Romania holds the 25% share of renewables in the energy mix, indicating a plateau and a need for storage technologies.
  • Belgium, and Luxembourg hold the bottom 2 places in RES penetration, having a share under 15%.
Renewables & Storage33
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Storage

Romania’s energy storage market expanded rapidly in 2025, yet substantial deployment is still required to achieve 2030 targets.

Energy storage in Europe, actual and forecast · GWh, 2025–2029

Fig. 3.3
Source: to be confirmed by CIGA

Energy storage in Romania vs 2030 targets · MWh, 2025–2030

Fig. 3.4
Source: to be confirmed by CIGANECP = National Energy and Climate Plan · NRRP = National Recovery and Resilience Plan · NES = National Energy Strategy
  • European storage capacity could exceed 600 GWh by 2029 under the high-growth scenario, more than tripling 2026 levels.
  • Romania’s accelerating storage deployment reflects growing flexibility needs driven by expanding renewable energy integration.
  • Romania’s installed storage capacity more than tripled in 2025, increasing from 138 MWh to 494 MWh.
  • Achieving the 2 GWh National Energy Strategy target requires a fourfold capacity increase from current levels.
Romanian Energy Market Annual Report34
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Distributed generation

Solar generation dominated distributed renewable production across all Romanian DSOs, with DEER accounting for the largest regional output.

RES generation by distribution operator and technology · GWh, 2025

Fig. 3.5
Source: to be confirmed by CIGATotals shown above bars · DEO = Distribuție Energie Oltenia · RER = Rețele Electrice România
  • DEER generated approximately 2.7 TWh of renewable electricity, representing the highest DSO contribution in 2025.
  • Solar accounted for the majority of renewable generation across all four DSO regions, exceeding wind output in every case.
  • Wind generation remained concentrated in DEER and RER, reflecting Romania’s strongest onshore wind resource areas.
  • Delgaz contributed the lowest renewable output at 572 GWh, highlighting significant regional disparities in distributed RES deployment.
Renewables & Storage35
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RES share

Romania’s RES share remains among Europe’s highest, although maintaining leadership will require accelerated deployment towards 2050.

RES share in electricity generation, EU and Romania · %, 2019–2025

Fig. 3.6
Source: to be confirmed by CIGA

RES consumption targets for Romania · share of consumption, 2030 and 2050

Fig. 3.7
20302050
Gross final energy consumption34.0%48.6%
Electricity57.2%80.0%
Transport23.7%43.4%
Heating & cooling33.8%39.75%
Source: to be confirmed by CIGA
  • Romania’s renewable electricity share reached nearly 70% in 2023, outperforming the EU average by around two percentage points.
  • The EU overtook Romania in 2024, with renewables exceeding 71% of electricity generation compared with 68% nationally.
  • Romania targets 80% renewable electricity by 2050, requiring continued investment in generation, storage and grid infrastructure.
  • Transport remains Romania’s most challenging sector, with renewable energy expected to increase from 23.7% in 2030 to 43.4% by 2050.
Romanian Energy Market Annual Report36
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Project pipeline

Romania’s RES project pipeline expanded rapidly, indicating strong investor confidence and accelerating project maturation across stages.

Capacity of RES projects by permitting stage · GW, Mar 2024 – Mar 2026

Fig. 3.8
Source: to be confirmed by CIGAATR = connection permit · GCA = grid connection agreement · NRA = national regulator (ANRE)
  • Connection permit applications (ATR) increased from 35 GW to 86 GW between March 2024 and March 2026.
  • Grid connection agreements nearly quadrupled, reaching over 50 GW, signalling substantial progress toward project implementation.
  • Projects holding both grid connection and building permits exceeded 29 GW, more than four times March 2024 levels.
  • Establishment permits surpassed 10 GW by March 2026, confirming an increasing share of projects advancing toward construction.
Renewables & Storage37
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Prosumers

Romania’s prosumer market continued its expansion, with installations accelerating across all distribution network operators through early 2026.

Number of prosumers by distribution operator · prosumers, 2021 – Q1 2026

Fig. 3.9
Source: to be confirmed by CIGA
  • DEER surpassed 133,000 prosumers in Q1 2026, remaining Romania’s largest distribution network by a wide margin.
  • The four largest DSOs collectively added more than 120,000 new prosumers between 2024 and Q1 2026.
  • Retele Electrice România exceeded 89,000 prosumers, reflecting sustained rooftop solar deployment in southern Romania.
  • Prosumer growth accelerated across every DSO, highlighting strong consumer participation in Romania’s distributed energy transition.
Romanian Energy Market Annual Report38
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Prosumer outlook

Romania’s prosumer capacity is projected to exceed 550 MW by 2030, reinforcing distributed solar as a key growth segment.

Forecast for number of prosumers in Romania · prosumers, 2022–2030

Fig. 3.10
Source: to be confirmed by CIGA
  • Installed prosumer capacity is forecast to increase almost fourteenfold, from 40 MW in 2022 to 559 MW by 2030.
  • Capacity additions accelerate after 2026, with annual installations exceeding 50 MW throughout the forecast period.
  • Romania is expected to surpass 430 MW of prosumer capacity by 2028, strengthening distributed renewable generation.
  • Sustained prosumer growth will increase rooftop solar’s contribution to electricity supply while enhancing consumer participation and system decentralisation.
Renewables & Storage39
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Prosumers

Romania’s prosumer market is evolving towards larger installations and battery integration, strengthening flexibility and self-consumption.

Installed prosumer capacity by customer type · MW, 2021 – Q1 2026

Fig. 3.11
Source: to be confirmed by CIGAC&I = commercial and industrial

Prosumers with storage by distribution operator · prosumers, 2025

Fig. 3.12
Source: to be confirmed by CIGADEER 26,512 · RER 15,387 · DEO 11,922 · Delgaz 11,350 · other operators 4 · total 65,175
  • Installed prosumer capacity exceeded 1.8 GW across both customer categories by Q1 2026.
  • Non-household prosumer capacity reached 1.83 GW, overtaking commercial and industrial installations for the first time.
  • More than 65,000 Romanian prosumers had installed battery storage systems by 2025, enhancing grid flexibility.
  • DEER accounts for the largest share of prosumers with storage, reflecting its leading position in distributed solar deployment.
Romanian Energy Market Annual Report40
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Regional view

Prosumer generation is increasingly concentrated in western and southern Romania, reflecting stronger distributed solar deployment in these regions.

Annual prosumer electricity production by county · GWh, 2025

Fig. 3.13
Source: to be confirmed by CIGAHighest: Ilfov 159 GWh (darkest, surrounding Bucharest 76 GWh) · Timiș 110 GWh
  • County-level prosumer generation ranges from 18 GWh to over 159 GWh, highlighting significant regional disparities.
  • Western counties consistently record the highest prosumer electricity production, driven by greater installed photovoltaic capacity.
  • Most southern and central counties exhibit above-average prosumer generation, reinforcing the nationwide expansion of rooftop solar.
  • Relatively low generation in several eastern and northeastern counties suggests substantial remaining potential for distributed renewable deployment.
Renewables & Storage41
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Market signals

Negative electricity prices have become more frequent, reflecting rapid solar deployment and growing midday oversupply in Romania’s market.

Hours with negative prices by month · hours, 2024 – Jul 2026

Fig. 3.14
Source: to be confirmed by CIGA

Total hours with negative prices per year · hours, 2024 – Jun 2026

Fig. 3.15
376h2024
856h2025
481h2026, to June
Source: to be confirmed by CIGA
  • Negative-price hours more than doubled from 376 in 2024 to 856 in 2025, signalling increasing market saturation.
  • April consistently recorded the highest number of negative-price hours, exceeding 280 hours by mid-2026.
  • Spring and early summer accounted for most negative-price events, coinciding with peak photovoltaic generation.
  • The rapid rise in negative prices highlights the urgent need for storage, demand-side flexibility and grid reinforcement.
Romanian Energy Market Annual Report42