As Europe aims for over 40% renewable energy by 2030, experts warn that investing in long-duration energy storage is vital to address intermittency, reduce costs, and ensure grid stability amidst rapid renewable expansion.
The mass outages in Spain and Portugal have served as a stark reminder that Europe’s fast-track expansion of wind and solar cannot succeed without commensurate investments in long-duration energy storage (LDES). According to the original report, the EU’s ambition to source over 40% of its energy from renewables by 2030 is achievable, but the intermittency of wind and solar requires storage that covers timeframes beyond the reach of today’s short-duration batteries. Without duration-aware planning and market signals, Europe risks overbuilding 4–8 hour batteries that leave residual flexibility gaps, force renewed reliance on thermal backup, and raise system costs and exposure to geopolitical commodity risk.
Industry data shows storage requirements could at least triple by 2050 if system needs are not addressed, and short-duration solutions alone cannot close that gap. LDES, particularly intraday systems that operate in the 8–24 hour range, complements rather than replaces shorter-duration batteries and ultra-long seasonal options. Technologies such as pumped hydro energy storage (PHES) and advanced compressed air energy storage (A-CAES) can reduce renewable curtailment, provide firm capacity through extended low-renewables periods, and deliver grid services that historically underpinned system stability, including synchronous inertia and black-start capability. These services are essential if thermal plants are to be retired without compromising reliability.
Strategic investment today would also limit longer-term system costs. The Joint Research Centre of the European Commission estimated grid expansion and curtailment costs could rise to more than €100 billion by 2040 unless flexibility is handled more efficiently. The practical case for early LDES procurement is illustrated by international precedents: the UK, responding to system-modelling outcomes, introduced a cap-and-floor LDES programme in 2025 that increased minimum duration requirements and now targets between 2.7GW and 7.7GW of capacity (up to 61GWh) by 2035. New South Wales’ Electricity Infrastructure Roadmap in Australia defines LDES as 8+ hours, targets 2GW by 2030 and 42GWh by 2034, and uses multi-round tenders and long-term agreements to attract diverse technologies; successful awards to projects such as the 800MW (12GWh) Phoenix pumped storage and the 200MW (1.6GWh) Silver City A-CAES have already captured a significant share of the NSW targets.
Policy action must be threefold. First, Europe should adopt robust, duration-aware system modelling that differentiates the technical and economic roles of short-, long- and ultra-long-duration storage and directly informs procurement. The UK example demonstrates how modelling can shift procurement design to favour longer-duration assets where they form part of a least-cost portfolio. Second, policymakers must create substantive, duration-specific procurement signals, transparent, multi-round tenders with 8+ hour targets and predictable timelines, that lower investor risk and spur technology-neutral competition. Third, long-term revenue-certainty mechanisms are required because wholesale markets do not currently price the full system value of LDES. Out-of-market instruments, cap-and-floor schemes, contracts for difference or long-term energy service agreements that recognise avoided transmission and system costs as well as energy value, have proven effective in other jurisdictions.
Embedding LDES into EU market architecture will also support industrial decarbonisation. Analysis covering industrial energy use stresses that extended-duration storage is a prerequisite for deep emissions cuts in energy-intensive sectors, enabling reliable, decarbonised power supply for processes that cannot tolerate intermittent supply. At the same time, recent EU statistics show renewable shares are rising, reaching roughly 24.5% of gross final energy consumption in 2023 and with the 2030 target now set near 42.5%, but scaling generation without parallel flexibility will shift rather than solve reliability and affordability risks.
There are trade-offs and technical choices ahead. Pumped hydro remains the lowest-cost long-duration option where geography allows; A-CAES and other emerging technologies offer siting flexibility and complementary services. Costs, permitting timelines and environmental impacts vary by technology and location, and procurement frameworks must be designed to weigh those factors against system benefits. According to the original report, failing to align markets and planning with duration needs risks stranded thermal assets and higher consumer bills as the region seeks energy independence.
Europe’s forthcoming flexibility needs assessments offer a timely policy window. Government figures and market experience indicate that decisive, technology-neutral procurement combined with long-duration revenue mechanisms can unlock the investments required to secure resource adequacy, preserve grid stability, and accelerate industrial decarbonisation. Policymakers who embed LDES into national and EU strategies now will reduce system costs over the medium term and materially strengthen Europe’s path to renewables-led energy independence.
- https://www.energy-storage.news/long-duration-energy-storage-is-non-negotiable-for-europes-energy-transformation/ – Please view link – unable to able to access data
- https://www.energy-storage.news/long-duration-energy-storage-is-non-negotiable-for-europes-energy-transformation/ – This article discusses the critical role of long-duration energy storage (LDES) in Europe’s energy transformation. It highlights the European Union’s goal to source over 40% of its energy from renewables by 2030 and the challenges of integrating intermittent wind and solar power. The piece emphasizes that without informed system planning and market signals for longer-duration storage, Europe risks overbuilding short-duration batteries, leading to overreliance on imported energy and higher electricity prices. It advocates for strategic investment in LDES to ensure energy independence and system stability.
- https://www.euronews.com/green/2024/03/14/long-duration-energy-storage-is-an-imperative-for-europes-industrial-decarbonisation – This article underscores the necessity of long-duration energy storage (LDES) technologies in Europe’s industrial decarbonisation efforts. It explains that LDES can store renewable energy for extended periods, making it ideal for industries aiming to reduce greenhouse gas emissions. The piece highlights that LDES technologies are already in production and are essential for achieving a 90% reduction in emissions by 2040. It calls for a regulatory framework that supports the economic viability of these technologies to drive change.
- https://www.green-forum.eu/energy/20250103/eu-hits-245-renewables-targets-425-by-2030-1622 – This article reports that the European Union achieved a 24.5% share of renewable energy in its gross final energy consumption in 2023, up from 23% in 2022. It notes that the EU’s Renewable Energy Directive has increased the 2030 target from 32% to 42.5%, with an aspiration to reach 45%. The piece highlights that Sweden leads EU countries with 66.4% of its energy consumption from renewable sources, primarily relying on solid biofuels, hydro, and wind.
- https://www.euronews.com/my-europe/2023/03/30/a-good-day-for-europes-energy-transition-eu-negotiators-reach-deal-to-double-renewables-by – This article discusses the European Union’s agreement to double the production of renewable energy by the end of the decade. Under the provisional deal, the share of renewable energy in the EU’s overall energy consumption will need to be 42.5% by 2030, with an additional ‘aspirational’ 2.5% top-up to reach 45%. The piece highlights that in 2021, renewable energy represented 21.8% of energy consumed in the EU, according to Eurostat.
- https://www.euronews.com/my-europe/2023/03/30/a-good-day-for-europes-energy-transition-eu-negotiators-reach-deal-to-double-renewables-by – This article discusses the European Union’s agreement to double the production of renewable energy by the end of the decade. Under the provisional deal, the share of renewable energy in the EU’s overall energy consumption will need to be 42.5% by 2030, with an additional ‘aspirational’ 2.5% top-up to reach 45%. The piece highlights that in 2021, renewable energy represented 21.8% of energy consumed in the EU, according to Eurostat.
- https://www.euronews.com/my-europe/2023/03/30/a-good-day-for-europes-energy-transition-eu-negotiators-reach-deal-to-double-renewables-by – This article discusses the European Union’s agreement to double the production of renewable energy by the end of the decade. Under the provisional deal, the share of renewable energy in the EU’s overall energy consumption will need to be 42.5% by 2030, with an additional ‘aspirational’ 2.5% top-up to reach 45%. The piece highlights that in 2021, renewable energy represented 21.8% of energy consumed in the EU, according to Eurostat.
Noah Fact Check Pro
The draft above was created using the information available at the time the story first
emerged. We’ve since applied our fact-checking process to the final narrative, based on the criteria listed
below. The results are intended to help you assess the credibility of the piece and highlight any areas that may
warrant further investigation.
Freshness check
Score:
8
Notes:
The narrative was published on December 9, 2025, making it current. The article references recent events, such as the 2025 Iberian Peninsula blackout, which occurred in April 2025. However, similar discussions on long-duration energy storage in Europe have been present in sources from earlier in 2025, indicating that while the content is fresh, the topic has been under discussion for some time. ([en.wikipedia.org](https://en.wikipedia.org/wiki/2025_Iberian_Peninsula_blackout?utm_source=openai))
Quotes check
Score:
9
Notes:
The article includes direct quotes from the author, Oonagh O’Grady, VP of international origination at Hydrostor. No identical quotes were found in earlier material, suggesting original content. However, the article’s content aligns with ongoing industry discussions, indicating that while the quotes are original, the themes have been previously addressed.
Source reliability
Score:
7
Notes:
The narrative originates from Energy-Storage.News, a publication focusing on energy storage news. While it is a specialised outlet, it is not as widely recognised as major news organisations like the BBC or Reuters. The author, Oonagh O’Grady, holds a significant position at Hydrostor, a company involved in energy storage solutions, which may present a potential conflict of interest.
Plausability check
Score:
8
Notes:
The claims made in the narrative are plausible and align with known industry trends. The article discusses the necessity of long-duration energy storage for Europe’s energy transformation, referencing recent events like the 2025 Iberian Peninsula blackout and ongoing EU initiatives. However, the article’s promotional tone and the author’s affiliation with Hydrostor suggest a potential bias, which should be considered when evaluating the content.
Overall assessment
Verdict (FAIL, OPEN, PASS): OPEN
Confidence (LOW, MEDIUM, HIGH): MEDIUM
Summary:
The narrative is current and presents original quotes from the author. However, it originates from a specialised outlet with a potential conflict of interest due to the author’s affiliation with Hydrostor. The claims made are plausible and align with known industry trends, but the promotional tone and potential bias warrant further scrutiny.
