In the expansion of the Rabenleite high-storage reservoir in Bavaria, two electrically powered tandem rollers from Hamm AG are being used for the first time. The pilot project by the Wirtgen Group could be groundbreaking for future construction methods in sensitive areas – and exemplifies the construction machinery industry's shift toward electromobility. As a construction contractor, this raises the question: When do electric compaction equipment make economic sense on your job site?
The Rabenleite high-storage reservoir is located in a forest area with strict environmental regulations. Here, the main advantage of electric rollers becomes clear: zero local emissions, no diesel smell, and significantly reduced noise levels. While conventional compaction rollers with combustion engines increasingly encounter acceptance problems in such protected areas, the electric drive enables construction work without conflict.
Technically, these are modified tandem rollers that operate via cable power supply. Unlike battery-powered compact equipment, operating duration is not an issue here – as long as a mains connection or power generator is available. Compaction performance remains identical to diesel-powered models: roller width, operating weight, and vibration amplitude correspond to standard versions. Your operator won't need to adjust to anything new.
What matters to you is the economic viability: For projects with permanent power connections, diesel costs are completely eliminated – at an average of 15 to 20 liters per operating hour, this adds up significantly for longer deployments. Additionally, maintenance intervals are reduced since the engine, exhaust system, and diesel particulate filter are eliminated. However, you must factor in higher acquisition costs and, if infrastructure is lacking, the costs for power generators or battery systems.
Hamm AG is part of the Wirtgen Group, which is already advancing electrification concepts for pavers and road milling machines. The Rabenleite project serves as a practical laboratory: What demands do electrified rollers place on construction site logistics? How do the machines perform under continuous operation? And where are the limits of cable power supply?
For the industry, this project could be trend-setting. Increasingly, municipalities require emission-free or low-emission technology for inner-city construction sites. If you want to bid on public tenders in the future, you should familiarize yourself with electrified construction equipment. It's not just about excavators or wheel loaders – pressure will also increase for compaction equipment.
The high-storage reservoir is part of a pumped-storage hydroelectric plant designed to buffer renewable energy. The fact that electric compaction technology is being used here, of all places, has symbolic significance: the energy transition is changing not just power generation, but increasingly construction site technology itself. For fleet operators, this means: those who engage with the new technologies early secure competitive advantages – especially for projects with strict environmental regulations.
Whether electric rollers are worthwhile for your operation depends on your application profile: For projects in protected areas, inner cities, or night work with noise restrictions, they are already economically viable today. For projects at changing locations without infrastructure, the diesel drive remains more practical for now – unless battery technology makes a major leap in the coming years.
