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Austria Renewable Heat Act

Austria Renewable Heat Act: Austria Renewable Heat Act: Fossil Heating Ban in New Buildings

Maílis Carrilho
Written by Maílis Carrilho
Updated on February 18th, 2026

Summary

Austria’s Renewable Heat Act (EWG) generally prohibits installing fossil-fuel-based heating systems for space heating and hot water in new buildings, with transitional provisions for certain projects already underway. Compliance is enforced through permitting and installation controls, making this primarily a market access and approval risk rather than a post-hoc reporting issue. The highest risk is early design misalignment: if the heating concept is non-compliant, the project can be forced into redesign or replacement at high cost.

Details

Jurisdictions
  • Austria
Mandatory for

Developers, owners, and builders of new buildings installing heat supply systems.

Exemptions

Transitional rules for specific projects already underway.

Limited feasibility-based carve-outs may apply depending on implementing detail and provincial building practice.

Deep dive

2 min read
Published Feb 18, 2026

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What’s Required

Austria’s Renewable Heat Act (EWG) is designed to reduce building-sector emissions by restricting fossil-based heating in new buildings.

Key requirements include:

  • General prohibition on installing fossil-fuel-based heat supply systems for space heating and/or hot water in new building construction.

  • Transitional provisions for projects already under construction or at specific permitting stages.

  • Practical compliance is enforced through building approval workflows and technical specifications during construction.

Notably, as described in practitioner overviews, the EWG focuses on new buildings, while existing buildings may be addressed through separate measures and subsidy pathways.

Important Deadlines

  • Entered into force: February 2024 (per published legal commentary).

  • Event-based: applies at permitting and installation decision points for new buildings.

Current Status

EWG is in force and is a core lever of Austria’s building decarbonisation strategy for new construction.

Penalties for Non-Compliance

  • Permit refusal or denial of commissioning sign-off.

  • Orders to replace non-compliant systems.

  • Potential loss of eligibility for related public support.

Examples of Known Violations

  • Installing a gas boiler in a new build without qualifying for transitional status.

  • Attempting to classify a new build as a renovation to avoid the prohibition.

Resources


Maílis Carrilho
Added by:
Maílis Carrilho
Sustainability Research Analyst
Maílis Carrilho is a Sustainability Research Analyst (Intern) at Net Zero Compare, contributing research and analysis on climate tech, carbon policies, and sustainable solutions. She supports the team in developing fact-based content and insights to help companies and readers navigate the evolving sustainability landscape.
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Added on Feb 18, 2026 by Maílis Carrilho ·