European data center firm Maincubes has topped out its latest data center in Frankfurt, Germany.

“Today, we celebrate the topping out of our next data center in Schwalbach, FRA03,” the company said last week on LinkedIn. “Set to launch by summer 2026, this facility will boast 16MW of IT capacity and set new standards in sustainability.”

Plans for FRA03 were announced in January 2022, with construction starting in Q4 2024. Set on a 17,000 sqm (18,2986 sq ft) plot, the three-story building will offer 7,680 sqm (82,666 sq ft) of white space. Due to launch in Q3 2026, it will be able to offer liquid cooling. The company said the facility will reuse its waste heat in the local district heating network.

Located in Schwalbach am Taunus, Hesse, the campus was previously owned by Samsung. The company announced in 2020 that it would be relocating its German HQ from Schwalbach to neighboring Eschborn by 2024.

Majority-owned by Digital Transformation Capital Partners (DTCP) since September 2023, Maincubes currently operates the FRA01 data center in Frankfurt and another in Amsterdam in the Netherlands.

Plans for the 20MW FRA02 facility were first announced in July 2021; construction began a year later, and the company launched the site in April 2024. At the time of planning, the company said part of the site had been pre-leased to an unnamed public sector IT client.

The company has also announced plans for a fourth data center in Frankfurt and its first and second in Berlin. In 2015, Keppel DC REIT acquired a then yet-to-be-constructed Maincubes data center in Offenbach, outside of Frankfurt.

Outside Germany, DTCP’s GreenScale is planning data center campuses in Northern Ireland, the Republic of Ireland, and Norway.