Iowa Electric 2014 Rate Plans Cost Drivers for Rate Increase: 2011 compared to 1995, the year of MidAmerican Energys last base electric rate increase 16 years ago: Increase in net investment in new generation: $3.4 billion (332% increase) Increase in other net infrastructure investment: $1.1 billion (106.4% increase) Increase in Iowa operations and maintenance expenses: $309.6 million (57.2% increase) Significant upcoming costs Environmental investment beyond 2012: $480 million Coal transportation cost increase in 2013: $30 million
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