Historical electricity rates

Time-of-use (TOU) rates

The following table and chart track time-of-use electricity rates since 2006. Under time-of-use rates, the amount you pay depends on when you use electricity.

Effective date Off-peak price
(¢ per kWh)
Mid-peak price
(¢ per kWh)
On-peak price
(¢ per kWh)
Jul 1, 2017 6.5 9.5 13.2
May 1, 2017 7.7 11.3 15.7
Nov 1, 2016 8.7 13.2 18.0
May 1, 2016 8.7 13.2 18.0
Nov 1, 2015 8.3 12.8 17.5
May 1, 2015 8.0 12.2 16.1
Nov 1, 2014 7.7 11.4 14.0
May 1, 2014 7.5 11.2 13.5
Nov 1, 2013 7.2 10.9 12.9
May 1, 2013 6.7 10.4 12.4
Nov 1, 2012 6.3 9.9 11.8
May 1, 2012 6.5 10 11.7
Nov 1, 2011 6.2 9.2 10.8
May 1, 2011 5.9 8.9 10.7
Nov 1, 2010 5.1 8.1 9.9
May 1, 2010 5.3 8.0 9.9
Nov 1, 2009 4.4 8.0 9.3
May 1, 2009 4.2 7.6 9.1
Nov 1, 2008 4.0 7.2 8.8
May 1, 2008 2.7 7.3 9.3
Nov 1, 2007 3.0 7.0 8.7
May 1, 2007 3.2 7.2 9.2
Nov 1, 2006 3.4 7.1 9.7
May 1, 2006 3.5 7.5

10.5

 

 

Tiered rates

The following table and chart tracks tiered electricity rates. Time-of-use rates started to replace tiered rates for households and small businesses in 2005. Under tiered rates, customers are charged two rates for electricity: a lower rate for the electricity used up to a certain limit, and a second, higher rate for all additional use.

Effective date Lower tier price
(¢ per kWh)
Residential threshold
for lower tier price
(kWh per month)
Higher tier price
(¢ per kWh)
Jul 1, 2017 7.7 600 9.0
May 1, 2017 9.1 600 10.6
Nov 1, 2016 10.3 1,000 12.1
May 1, 2016 10.3 600 12.1
Nov 1, 2015 9.9 1,000 11.6
May 1, 2015 9.4 600 11.0
Nov 1, 2014 8.8 1,000 10.3
May 1, 2014 8.6 600 10.1
Nov 1, 2013 8.3 1,000 9.7
May 1, 2013 7.8 600 9.1
Nov 1, 2012 7.4 1,000 8.7
May 1, 2012 7.5 600 8.8
Nov 1, 2011 7.1 1,000 8.3
May 1, 2011 6.8 600 7.9
Nov 1, 2010 6.4 1,000 7.4
May 1, 2010 6.5 600 7.5
Nov 1, 2009 5.8 1,000 6.7
May 1, 2009 5.7 600 6.6
Nov 1, 2008 5.6 1,000 6.5
May 1, 2008 5.0 600 5.9
Nov 1, 2007 5.0 1,000 5.9
May 1, 2007 5.3 600 6.2
Nov 1, 2006 5.5 1,000 6.4
May 1, 2006 5.8 600 6.7
Nov 1, 2005 5.0 1,000 5.8
Apr 1, 2005 5.0 750 5.8
Apr 1, 2004* 4.7 750 5.5
Dec 9, 2002*

4.3 ¢ per kWh

* Set by Government Regulation