Taiwan is set to bring in new rules governing the installation of solar PV systems on large buildings.

From August 1, amendments to Taiwan’s Renewable Energy Development Act will require newly constructed, expanded or renovated buildings with a floor area of 1,000 square metres or more to install solar PV systems at a rate of 1 kW per 20 square metres of building area.

During a briefing on the new regulations, Deputy Minister of Taiwan’s Ministry of the Interior (MOI), Dong Jian-hong, said the rules are expected to add around 660 MW of solar PV capacity annually.

A news release from the MOI and Taiwan’s Ministry of Economic Affairs (MOEA) said the requirements will help increase the supply of green energy in urban areas while improving the energy independence and resilience of buildings with solar.

The updated regulations also require solar installations to be incorporated into building plans from the design stage. This approach aims to balance aesthetics, practicality and safety, while reducing the construction and management challenges associated with adding solar systems after buildings have been completed, the ministries said.

The MOI added that it will work with MOEA’s Energy Administration, Taiwan Power Company, and industry stakeholders to establish coordination mechanisms between building designers and the solar industry. The collaboration will aim to address any concerns related to equipment design, maintenance management and grid connections.

“The aim is to gradually develop a comprehensive process covering solar PV planning, installation, grid connection and subsequent maintenance management, providing the industry with the necessary professional support,” the ministries said.

Taiwan is on track to more than double its current solar capacity by the end of 2035, according to analysis by consultancy GlobalData, with forecasted annual growth additions between 1 GW and 2 GW.

In May, the city of Taoyuan in northern Taiwan published local guidelines for solar power projects in a move signalling a shift towards a regionalized approach for solar permitting in the country. The announcement followed changes to Taiwan’s Legislative Yuan on national-level regulations governing the development of ground-mounted and floating solar projects that followed a major typhoon in July 2025, damaging over 135,000 solar panels.