/BUDAPEST, HUNGARY, August 13, 2026, 9:30 CEST, RENEWABLE MARKET WATCH™/
“Budapest rooftops could potentially generate energy equivalent to 2.5 times the output of the Paks nuclear power plant through solar panels and energy storage systems”, Mayor Gergely Karácsony said. “It is a major development that the Hungarian Prime Minister is finally speaking about climate change in the Hungarian Parliament. And at last, he is not spouting far-fetched theories and utter nonsense, as so many from the previous government did, but is talking about the inescapable responsibility we face in relation to climate change”, he added.
In alignment with Budapest’s Environmental Protection Program (2021–2026), long-term urban development vision, and the Budapest Climate Strategy, the city administration has set a clear strategic objective to substantially increase the share of renewable energy in its energy mix. Central to this effort is a concerted push to accelerate rooftop solar photovoltaic (PV) adoption, supported by proactive policy measures, incentives, and a systematic approach to identifying and leveraging financial support mechanisms. This comprehensive framework aims to position Budapest as a regional leader in sustainable urban energy transformation, with rooftop solar as a cornerstone of its decarbonization strategy.
“When I argue in favour of a partnership between Budapest and the government, this is what I am referring to: the effects of climate change are felt primarily in cities, but no single city can tackle this challenge on its own. The state must establish the regulatory and financial frameworks; the city must translate these into everyday practice; the private sector must apply them in investments and technologies; and citizens must not simply be passive sufferers, but active participants in the change”, Mayor Gergely Karácsony said.
To facilitate targeted solar investment and streamline project development, Budapest launched the Solar Map initiative in 2021 and completed the spatial database by October 2022. Subsequent months were dedicated to data validation and to creating a methodology tailored to local regulatory, technical, and market conditions. The resulting platform includes a high-resolution map layer pinpointing 344,000 buildings citywide and a comprehensive digital surface model produced using advanced LiDAR remote sensing technology. This robust data infrastructure provides a foundation for strategic planning, investor engagement, and policy formulation around rooftop solar deployment.
Utilising year-round rooftop solar irradiation simulations, the Budapest Solar Map delivers precise, building-level irradiation data visualised through an intuitive colour scale. This actionable resource empowers policymakers, investors, and project developers to assess and prioritise high-potential sites, optimise investment decisions, and maximise solar generation across the Hungarian capital’s urban landscape.
“I understand that the government recently announced a new energy development plan that also fits into this approach. Part of this is the intention – quite rightly – to incorporate solar energy into energy production. The partnership between Budapest and the government offers a wealth of opportunities in this area too. Budapest drew up a solar map of the city years ago and launched the ‘Powered by the Sun’ programme. Then the Orbán government came along and banned the feeding of energy generated by new solar panel systems into the grid, thereby effectively making the installation of new solar panels impossible,” according to the Mayor.
Budapest’s active participation in the European Commission’s Horizon Europe Mission: Climate-Neutral and Smart Cities further reinforces its commitment to expanding renewable energy and achieving climate neutrality. This affiliation unlocks additional funding, fosters international collaboration, and positions the city as a frontrunner in sustainable urban energy innovation at the European level.
Yet the aim and purpose of the capital’s programme is to have a total of 10 million square metres of solar panels in the city, together with battery energy storage system (BESS) facilities. These storage facilities also help to regulate the system. This would save nearly half a million tonnes of carbon dioxide emissions – equivalent to the amount released into the atmosphere from the annual electricity consumption of the entire population of Budapest. Now that the challenge is clear to everyone, and the Hungarian Prime Minister is finally speaking responsibly about the climate crisis, our plans – which seemed like mere pipe dreams just a few years ago – could quickly become a reality. But only if there is partnership.
For more information and answers to your questions about the Hungarian self-consumption solar and battery energy storage system (BESS) market and related content, you may read here: Europe Net Metering and Self-Consumption Solar PV Market Outlook 2025 – 2034 and Europe Battery Energy Storage System (BESS) Market Outlook 2025 – 2034
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