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ABB electric drives save a record 310 megawatt hours in 2011

Energy savings equivalent to the output of 31 nuclear power station blocks

About 310 million megawatt-hours (MWh) of electric power was saved by the installed base of ABB drives in 2011, an increase of 19 percent compared with the previous year. Electric drives are used to regulate the speed and power consumption of electric motors. Industrial electric motors account for about 25 percent of all the electricity consumed worldwide.

The savings from ABB drives in 2011 correspond to 260 million tons of CO2 emissions - had this power been generated by fossil fuels - or electricity costs savings of approximately £27 billion for customers1. These savings are equivalent to the electricity generated by more than 30 nuclear power station blocks, or to over three and a half years power consumption of the UK's 26 million households2.

"The future potential for energy and cost savings is enormous since only about 10 percent of industrial motors are combined currently with electric drives," said Ulrich Spiesshofer, member of the Group Executive committee and head of ABB's Discrete Automation and Motion division. "Using energy more efficiently will remain, for a significant time, the biggest opportunity available to cut energy consumption as well as costs and emissions."

Electric motors are used widely in industry, for example, when pumping water, running fans and air conditioning, conveying goods over belts, rolling steel, moving elevators, etc.

ABB's annual savings estimate is based on a comparison of the average electricity consumption in applications with and without drives. Many electric motors that are not equipped with drive technology run at maximum speed and are simply throttled if less performance is needed.

Energy accounts for 92 to 95 percent of the life cycle cost of a motor, depending on its size, so an investment in electric drives typically pays back in less than two years.

 

1 At 2011 UK commercial electricity prices
2 Medium electricity consumption of UK households, source: Ofgem

 


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