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Battery storage in California has increased more than 25-fold in seven years

Battery energy storage systems in California now have a total capacity of over 21,000 MW, making the state’s battery fleet one of the largest in the world. In less than a decade, batteries have gone from being an emerging technology to a key element of California’s transition to clean energy. By storing electricity generated during …

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Photovoltaics Report 2026: Solar Power Enters a New Stage of Global Development

Photovoltaics remains one of the fastest-growing technologies in the global energy sector. Fraunhofer Institute for Solar Energy Systems ISE’s Photovoltaics Report, updated in July 2026, provides a broad assessment of market development, technology, manufacturing, solar-cell and module efficiency, life-cycle performance, costs and the increasing integration of PV with battery storage. Its central message is that …

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Climate Vulnerability of Buildings Is Shifting from Colder to Hotter Regions

A new global study by the European Commission’s Joint Research Centre shows that climate change is gradually reshaping the geography of building-energy vulnerability. Today, a significant share of the problem is concentrated in colder regions with old, dispersed building stocks and substantial heating requirements. Over the coming decades, however, an increasing share of the pressure …

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Analysis of the Electricity System under Extreme Weather Conditions

Extreme weather conditions during the summer of 2026 have placed additional pressure on the European electricity system. Prolonged heat, drought and low river flows have affected different parts of Europe, creating simultaneous risks for electricity generation, infrastructure and consumption. Despite these conditions, the available European assessments do not indicate a general resource adequacy problem across …

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Turning the EU ETS from an industrial cost into an investment instrument for decarbonisation

Review of  Phuc-Vinh Nguyen and Alice Moscovici, “Conditionalities, Earmarking, Frontloading: How to Get the White Smoke on ETS”, Jacques Delors Institute, Energy & Climate Policy Paper No. 322, July 2026. The authors approach the forthcoming reform of the EU Emissions Trading System as one of the central tests of Europe’s attempt to reconcile climate policy …

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Renewable electricity from the Western Balkans faces challenges from CBAM

Following the publication of its report on the first quarter of 2026, the Energy Community Secretariat continues to publish regular overviews of the main trends and developments in electricity markets in the Energy Community Contracting Parties and neighbouring EU Member States, with a particular focus on the potential policy and market impacts triggered directly or …

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Reducing system costs, electrification, and digitization

On July 17, 2026, the European Commission presented a proposal for a regulation of the European Parliament and of the Council amending Regulation (EU) 2019/943 (the Electricity Regulation) on ensuring the future affordability of electricity bills in the Union by reducing system costs and promoting electrification and digitalization (COM(2026) 600 final, 2026/0203 (COD)). The proposal …

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The Number of Polish Households with Dynamic Pricing Contracts Is Rising, but Their Share Remains Negligible

The President of Poland’s Energy Regulatory Office (URE) has published the latest report monitoring the implementation and performance of dynamic pricing contracts in 2025. The data show a sharp increase in the number of household customers opting for this type of contract, rising by nearly 3,500% compared with the previous year. The 2025 report is …

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Statistical Review of World Energy 2026

The publication below is a summary of the Statistical Review of World Energy 2026, the 75th edition of the Energy Institute (EI). The report was institutionally produced by the Energy Institute, in partnership with Ember and in collaboration with KPMG and Kearney, while the data compilation was carried out by Wattage. EI presents the publication …

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IEA publication: Global natural gas demand is expected to contract in 2026

Source and scope The International Energy Agency’s publication of 7 July 2026, “Global demand for natural gas expected to contract this year as tighter supply pushes up prices”, together with the accompanying Gas Market Report, Q3-2026 review market developments during the first half of 2026 and provides a forecast for the full year. Its baseline …

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