Overcharging customers on interim rates

  • Updated: December 31, 2012 - 6:37 PM

 

Minnesota electric and gas customers were temporarily overcharged on interim rates in nine out of 10 cases since 2008. Interim rates are granted almost automatically to utilities during the months a rate increase request is under regulatory review. Any overcharges are refunded with interest after final rates are approved.

Note: Dollars in millions Interim Approved Percent

Company Year increase increase refunded

Minnesota Power (E) 2008 $36.4 $15.2 58%

Xcel Energy (E) 2008 $150.5 $103.9 31%

CenterPoint Energy (G) 2008 $77.2 $61.5 20%

Minn. Energy Resources (G) 2008 $26.2 $20.8 21%

Xcel Energy (G) 2009 $14.4 $9.5 34%

Minnesota Power* (E) 2009 $32.8 $36.1 -10%

Otter Tail Power Co. (E) 2010 $6.3 $2.4 62%

Interstate Power Co. (E) 2010 $17.7 $14.1 21%

Xcel Energy (E) 2010 $153.7 $76.8 50%

Minn. Energy Resources (G) 2010 $9.8 $7.80 21%

Note: (E) electric rates; (G) gas rates

*Interim rate decision on appeal before Minnesota Supreme Court.

Source: Minnesota attorney general

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