IEA – International Energy Agency - IEA

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energy system buildings

Reports

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Data sets

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Solid biofuels consumption estimation model

Data set

Free

Data explorers

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Residential Heat Economics Calculator

Explore & compare the economics of different residential heating systems

Data explorer

Charts

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Delivered energy demand for space heating in a typical multi-family building in Ukraine by heating system type and level of building envelope performance , 2025

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Policies

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Policy

Country

Status

Jurisdiction

Portugal-Energy Certification System of Buildings (2013)-Space heating,Existing buildings - 2013
Portugal 2013 Ended National
Portugal-Energy Certification System of Buildings (2013)-Space heating,New buildings - 1998
Portugal 1998 Ended National
Portugal-Energy Certification System of Buildings (2013)-Space heating,Existing buildings - 2010
Portugal 2010 Ended National
Portugal-Energy Certification System of Buildings (2013)-Space heating,New buildings - 1991
Portugal 1991 Ended National

News

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Ireland can build on its electricity leadership to deliver a resilient power system and meet rising demand

18 December 2025

Aerial view of Carnsore Wind Farm at Carnsore Point Ireland's southern limit point shutterstock 1895976976

Electrification can strengthen Portugal’s energy security and economic resilience

Photo depicting aerial view of the center of Porto and the Dom Luis bridge shutterstock 2478638959

IEA Ministerial: In the Age of Electricity, energy security depends on resilience and cooperation

18 February 2026

Age Of Electricity 260218 ministerial HLD11EA01600 (1)

Korea can accelerate its path to carbon neutrality by expanding investment in renewables and clean energy technologies

25 November 2025

Aerial view of Seoul cityscape at night South Korea shutterstock 179509715

Events

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9 Oct 2025 13:00—15:30

Securing Africa’s Energy Future: Building Robust Energy Security Data Systems

30 Jun 2026 13:30—15:00

Thematic session: Buildings as active players in the energy transition

Conference — Montreal, Canada

10 - 12 Jun 2025

Demand Side Data and Energy Efficiency Indicators Workshop for Southeast Asia

Workshop — Zoom, Webinar

27 - 30 Oct 2025

30th Energy Statistics Course

Training — Paris, France

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Internships

Launch your career in the global energy sector

Strait of Hormuz

Factsheet

The IEA Regional Cooperation Centre in Singapore

Canada 2025

IEA Contributions to the G7