Fire damages newly commissioned solar noise barrier on Shanghai expressway
May 2025Published 15 Sept 2026Responsible editor: Chief Editor
- Where
- elevated Hongmei South Road expressway in Shanghai's Xuhui District
- Operator
- Shanghai branch of China Huadian Corp
- What
- fire broke out on photovoltaic noise barrier
- Injuries
- None reported
- Cause
- Under investigation
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Companies named in the reporting of this entry (being named is not a finding of fault): Shanghai branch of China Huadian
What happened
On the afternoon of 21 May 2025, a fire broke out on a photovoltaic noise barrier integrated into the elevated Hongmei South Road expressway in Shanghai's Xuhui District. Thick black smoke rose from the structure and debris fell onto the road below, disrupting traffic for more than two hours. The Xuhui District fire department attended and brought the blaze under control using aerial ladder trucks and ground crews. No injuries were reported.
Many of the installed lightweight flexible solar modules were damaged. The project, backed by the Shanghai branch of China Huadian Corp and described as China's first PV-powered elevated noise barrier, had been connected to the grid on 30 April 2025, only about three weeks before the fire. The company said it had activated emergency response protocols and was cooperating with the authorities, who were still investigating the cause at the time of reporting.
Contributing factors
The barrier used lightweight flexible thin-film modules with a load of 5 kg per square metre, chosen to balance power generation with noise reduction; the module type was not specified in the reporting. Industry commentary cited in the report notes that transport-integrated PV systems face harsher operating conditions than conventional ground or roof mounted arrays, including vehicle vibration, exhaust corrosion and extreme weather, and called for stricter fire resistance standards, cable maintenance and lifecycle safety management for this type of installation. The technical cause of the fire had not been confirmed at the time of publication.
Lessons learned
- Lightweight flexible thin-film modules on transport structures must meet stricter fire resistance standards because they sit above live roads where falling debris can disrupt traffic.
- Newly commissioned PV noise barriers need close monitoring in the first weeks after grid connection as faults can appear soon after energisation.
- Fire response for elevated PV barriers above roads requires aerial equipment because ground crews cannot reach the modules directly.
More lessons on design, standards and commissioning, detection and monitoring, spacing, layout and fire spread, from every incident on the register.
Not yet known
- Technical cause of the fire
- Model and age of the solar modules
- Cost of damage and repairs
- Duration of full asset downtime
This entry is updated when these are reported. Get an alert for the next one like it.
Published 2026-09-15. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.
