Energy efficiency in the construction sector can potentially be improved by a factor of 10, said Jenny Elfsberg , Director of Emerging Technologies, Volvo Construction Equipment, at the CCC infrastructure seminar in Birmingham.
“This cannot solely be achieved at machine level. We have to zoom out our approach and look at intelligent machines, electrification and site solutions where connectivity is included. In this framework it is actually realistic to speak of 10x energy efficiency,” she said.
As part of this programme, Volvo CE has been working with Skanska and the Swedish Energy Agency on the electrification of a working quarry site.
“We looked at a complete site with a customer. It is not a case of replacing one machine with another. We have to replace one process with another process,” Elfsberg explained.
In the current state of technology, Volvo CE is working on fully autonomous, fully electric operation for equipment such as haulers. Excavators, crushers and conveyor belts will be grid connected. Loaders will employ hybrid technologies as battery life is currently limited.
“For 10 weeks, in autumn 2018, we will demonstrate the electric site concept with our key account customer Skanska Sweden at one of their sites in western Sweden,” Jenny Elfsberg said.
“The system will be safe, productive, environmentally friendly and commercially viable. It is the solution for the sustainable quarry and aggregate industry.”
The future is electromobility, Jenny Elfsberg stressed. “We have to go to electric. We have many hybrid solutions, but eventually it has to be electric.
These technologies can bring down CO2 and total cost of operations TCO by 25% and total emissions by 95%.
See presentation below (video).