Constitutional Court Overturns
Ban on Solar Power in Protected Area
in St. Pölten
Anyone willing to drive the energy transition deserves support, not administrative resistance.
In St. Pölten, a homeowner was prohibited by the building authority from installing a photovoltaic system on her own roof within a protected zone, simply because the panels would have been visible from the street. It was a blanket ban: no case-by-case assessment, no specific reasoning, no balanced consideration.
Dr. Sigrid Schmidl-Amann decided to challenge the decision. With lawyer Michaela Krömer and the support of CLAW, the case went all the way to the Austrian Constitutional Court and was successful.
At a time when rising energy costs and political commitments are meant to accelerate the expansion of renewable energy, local and regional rules often do the opposite. They delay, obstruct or prevent precisely the kind of action that is urgently needed. With this ruling, that system is beginning to shift.
Blanket ban overturned: what the Austrian Constitutional Court clarified
On 3 March 2026, the Austrian Constitutional Court annulled key provisions of the development plan of the City of St. Pölten as unlawful (V 59/2025-18).
Under the development plan, photovoltaic systems were prohibited on roof surfaces within protected zones if they were visible from public spaces. The ban applied across the board and without exception. Any deviation from this rule required approval by a design advisory board.
The Court made clear that there was no statutory basis for this. Neither the Lower Austrian Building Code nor the Lower Austrian Spatial Planning Act provides for the establishment of such a design advisory board or for decision-making powers to be transferred to it.
At the same time, the Court annulled the blanket ban on photovoltaic systems where no separate, case-specific justification had been provided.
The blanket ban has been overturned
Photovoltaic systems may not be prohibited solely because they are visible from public spaces.
No legal basis for the design advisory board
Administrative decision-making powers may not be outsourced to a body that is not provided for by law.
Case-by-case assessment instead of a general ban
Municipalities must assess each case individually. Blanket, unconditional bans are unlawful.
Significance beyond St. Pölten
Similar rules exist across Austria. This decision shows that they may be open to legal challenge.
From building permit to the Constitutional Court
Dr. Sigrid Schmidl-Amann owns a building in a protected zone in the historic centre of St. Pölten. She wanted to install a photovoltaic system on her roof in order to generate affordable, clean electricity. The building authority refused the installation because the panels would have been visible from public space. The appeals authority upheld the refusal.
Dr. Sigrid Schmidl-Amann did not give up. With lawyer Michaela Krömer and the support of CLAW, the case was brought before the Lower Austrian Regional Administrative Court, which ultimately referred the matter to the Austrian Constitutional Court.
- June 2023: Building notification submitted
The applicant notified the City of St. Pölten of her intention to install a photovoltaic system on her roof. - August 2023: Negative assessment
The City’s design advisory board found that the planned installation conflicted with the building regulations applicable to protected zones. - August 2023: Installation prohibited
The first-instance building authority prohibited the photovoltaic system on the roof surfaces visible from public space. - February 2024: Appeal dismissed
The City Senate, acting as the second-instance building authority, upheld the prohibition. - 2024: Complaint before the Lower Austrian Regional Administrative Court
Lawyer Michaela Krömer filed a complaint and requested that the relevant provisions be reviewed. - 2025: Referral to the Austrian Constitutional Court
The Lower Austrian Regional Administrative Court applied to the Austrian Constitutional Court for a review of the development plan. - 3 March 2026: Austrian Constitutional Court overturns the blanket ban
The Court held that both the PV ban and the design advisory board clause were unlawful.
A successful climate case with nationwide significance
One ruling. One city.
But the impact reaches far beyond St. Pölten.
Across Austria, similar restrictions continue to stand in the way of renewable energy projects. The Austrian Constitutional Court has paved the way. Anyone who encounters similar bans in their municipality is welcome to share that information with us.
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