A look at the World’s Largest Rooftop Solar Power Plant located in Horsens

The world’s largest rooftop solar plant is located in Horsens, Denmark, and was commissioned in September 2025.

Developed and installed by Danish solar company SolarFuture ApS, the massive solar facility sits atop DSV’s expansive logistics buildings, marking a major milestone in industrial sustainability. Following final installations and system adjustments, the plant has now been officially put into operation—ready to generate clean, renewable energy at full capacity.

A Landmark in the Green Transition

The DSV logistics center spans over 300,000 square meters, the majority of which are now covered by more than 78,000 solar panels. With a total installed capacity of 34.5 MWp, the system is expected to generate 33 GWh of electricity annually—enough to power approximately 7,300 households or about 6% of Horsens Municipality’s total electricity consumption.

This project not only underscores Denmark’s leadership in renewable energy but also demonstrates how large-scale commercial operations can integrate sustainability directly into their infrastructure.

A Major Achievement for SolarFuture ApS

SolarFuture ApS, headquartered in Albertslund, secured the contract to design and build the world’s largest rooftop solar power plant at DSV’s new logistics center. Construction began in 2024, with completion achieved right on schedule.

Founded in 2014, SolarFuture specializes in delivering profitable solar cell solutions for the industrial and agricultural sectors. The company has executed several high-profile projects, including rooftop installations on the Copenhagen Opera House and ground-based systems supporting the Øresund Bridge, which connects Denmark and Sweden.

Factsheet

Location: Horsens, Denmark
Developer: SolarFuture ApS
Client: DSV Logistics
Commissioned: September 2025
Capacity: 34.5 MWp
Annual Generation: 33 GWh
Number of Panels: 78,000+
Area Covered: Over 300,000 m²
Equivalent Power Supply: ~7,300 households
Share of Horsens’ Power Demand: ~6%
Construction Period: 2024–2025

The World’s Largest Rooftop Solar Plant – A Key Part of Going Green

Solar power plants with a similar production size and capacity are usually only seen carried out as solar farms on the ground here in Denmark, and you have to look abroad to find similar projects carried out on industrial roofs. Demmark is enjoying a spate of new solar projects coming online such as a large-scale hybrid renewable energy project in Høegholm, eastern Denmark being developed by Greenvolt taht shows the countries drive for renewable energy.

In comparison with the largest rooftop solar projects seen abroad, like Tesla’s Gigafactory in Nevada, the electricity production from the solar plant in Horsens, Denmark, it will exceed the existing installations in the world currently. The building at DSV’s logistics center is over 300,000 square meters, an area that corresponds to the world’s 5th largest building, of which now the majority of the roof surface will be covered by solar panels.

The Chief Executive Officer (CEO) of SolarFuture ApS, Mads Christensen, says: “It is a landmark project for us at SolarFuture ApS, but also for the entire solar industry in general. It is of course a huge honor to be selected to build the world’s largest rooftop solar plant system, which we look forward to delivering in full. A strong team of specialists has been put together for the execution, so we expect a relatively quick installation, as long as the logistics work.”

Project data for World’s largest rooftop solar plant in Horsens

The project data for the world’s largest rooftop solar plant in Horsens reveals an impressive solar system with a total output of 35 MWp. This system boasts an annual production capacity of 33.15 GWh, contributing significantly to sustainable energy generation. Moreover, the environmental impact is noteworthy, with CO2 savings amounting to 5,300 tonnes per year, aligning with the center’s commitment to reducing its carbon footprint. To optimize production efficiency, a ballast system is employed for mounting the solar panels, ensuring stability and functionality. Strategically located with an East/West orientation, the solar array ensures even production throughout the day, maximizing its utility and impact on renewable energy generation.

According to local news TV2 Østjylland, the project developers are planning to complete the project before the end of 2024 — a very tight timeline indeed. So, world’s largest rooftop solar plant, a 35 MWp is really something. 300,000 square meters or 3,229,000 square feet is a lot, but I believe Tesla’s Gigafactories are much larger in size. Tesla’s Gigafactory in Nevada is estimated to have an output of 8 MWp, and Giga Texas is estimated to reach 30 MWp. To think that a logistics center in the small country of Denmark could beat the largest buildings on earth might be up for debate.