The expansion of renewable energy sources and electricity grids, as well as the phased phase-out of coal-fired power generation, are essential prerequisites for achieving Germany’s climate targets and ensuring a secure, sustainable energy supply. The so-called ‘fuel switch’ plays a key role in this transformation process.

Against this backdrop, EnBW decided early on, as part of its sustainability agenda, to technically retrofit existing sites as well as to build new, hydrogen-compatible combined cycle power stations. Both in Altbach/Deizisau, with more than 120 years of energy history, and in Heilbronn, one of EnBW’s largest hard coal-fired power stations, modern combined cycle power stations are being built as part of the fuel switch; these will initially be operated using natural gas and will eventually be converted to hydrogen.

Extensive finishing works during ongoing power plant construction

At both sites, PORR structural engineering is undertaking key finishing works. These include, amongst other things, masonry works, coating and anti-corrosion systems, doors and fire barriers, technical and raised floor systems, suspended ceilings, as well as fencing and perimeter systems. In addition, PORR is carrying out waterproofing work in electrical, HVAC and technical areas. The first phases of the fit-out have already been successfully completed, inspected and handed over to the client.

High safety requirements and international collaboration

The construction sites are characterised by international project structures, parallel steel and plant installation work, as well as very high standards of health, safety and environmental protection (HSE). “The multinational site team works predominantly in English. This places particular demands on communication, organisation and coordination among all parties involved,” explains Katrin Dylla, Project Manager at PORR. A strong safety culture forms the basis for the project’s success.

Focus on quality, environmental protection and water conservation

Particular emphasis is placed on compliance with water law regulations. In Altbach, PORR is, among other things, sealing the oil collection basins beneath transformers using coating systems compliant with the German Water Act (WHG), thereby ensuring the protection of the sensitive surrounding environment.

With a view to the planned commissioning in the first quarter of 2027, the upcoming project phases will focus on the timely completion of the finishing works as well as the acceptance of safety and fire protection-related services. With the projects in Altbach and Heilbronn, PORR structural engineering is underlining its long-standing experience and technical expertise in power plant construction.