The number of machines connected to mobile networks in Europe will grow by 43.7% annually to reach 52.0 mln by 2011. At the end of 2006 there were about 8.5 mln active cellular and satellite wireless M2M connections in the EU and Western Europe. Energy meters currently constitute the largest vertical market segment in terms of deployed units, followed by motor vehicles, security alarms and POS-terminals. In 2011, motor vehicles are forecasted to have become the largest segment, accounting for more than 60% of the total installed base, Berg Insight says.