TotalEnergies and Holcim, a leading player in sustainable construction, have inaugurated in Belgium a floating solar power plant with a capacity of 31 MW, located in Obourg on a former chalk quarry site that has been rehabilitated into a lake.
The solar power plant produces 30 GWh per year of renewable electricity, which is self-consumed by Holcim’s industrial facilities, making it the largest floating solar power plant in Europe dedicated to self-consumption. To maximize landscape integration, more than 700 meters of horizontal directional drilling were carried out to connect the panels to the electrical substation.
'We are delighted to inaugurate this floating solar power plant, which demonstrates TotalEnergies’ teams’ ability to innovate to meet the needs of our partner Holcim, whom we support along with other industrial customers in their efforts to decarbonize their operations,' said Olivier Greiner, Managing Director Retail Power & Gas Belgium at TotalEnergies.
About Holcim
As a global leader in innovative and sustainable construction solutions, Holcim promotes the development of more sustainable cities, smarter infrastructure, and improved living standards worldwide. With sustainability at the heart of its strategy, Holcim is becoming a carbon neutral company and advocates for more circular construction by using fewer resources. Globally, Holcim employs 45,000 people; Holcim Belgium has 985 employees across 26 sites. All are driven by a shared commitment to making progress for people and the planet across four business segments: Cement, Ready Mix Concrete, Aggregates, and Dry Mortars.
TotalEnergies and electricity
TotalEnergies is building a competitive portfolio that combines renewables (solar, onshore wind, offshore wind) and flexible assets (CCGT, storage) to deliver clean firm power to its customers. At the beginning of 2026, TotalEnergies has more than 34 GW of gross renewable power generation capacity and aims to achieve over 100 TWh of net electricity production by 2030.
Source: TotalEnergies
