North Dakota Environmental Cost Recovery Rider

As of January 2014 the Environmental Cost Recovery Rider (ECRR) allows our company to recover costs that we incur to meet new state or federal environmental quality requirements for our electric generating facilities. To meet federal air-quality requirements, the North Dakota Public Service Commission approved our request on December 18, 2013, for an ECRR to include the costs associated with an air-quality control system (AQCS) at Big Stone Plant in South Dakota.

The ECRR factor is multiplied by our customers' monthly bills. It does not apply to any Mandatory Riders, sales tax, or any local assessments.

Environmental Cost Recovery factor for bills rendered:
On or after November 1, 2019	0.000 percent
From February 1, 2019, through October 31, 2019	-.310 percent
From March 1, 2018, through January 31, 2019	5.993 percent

Effective February 1, 2019, all costs previously recovered through the Reagents and Emissions Allowance Adjustment Rider are now recovered through the Energy Adjustment Rider.

Reagents and Emissions Allowance Adjustment for bills rendered on and after:
January 1, 2019	$.00013 per kWh
December 1, 2018	$.00029 per kWh
November 1, 2018	$.00059 per kWh
October 1, 2018	$.00076 per kWh
September 1, 2018	$.00063 per kWh
August 1, 2018	$.00051 per kWh
July 1, 2018	$.00040 per kWh
June 1, 2018	$.00032 per kWh
May 1, 2018	$.00040 per kWh
April 1, 2018	$.00044 per kWh
March 1, 2018	$.00044 per kWh
February 1, 2018	$.00048 per kWh
January 1, 2018	$.00051 per kWh
December 1, 2017	$.00052 per kWh
November 1, 2017	$.00059 per kWh
October 1, 2017	$.00058 per kWh
September 1, 2017	$.00047 per kWh
August 1, 2017	$.00038 per kWh
July 1, 2017	$.00035 per kWh
June 1, 2017	$.00037 per kWh
May 1, 2017	$.00048 per kWh
April 1, 2017	$.00046 per kWh
March 1, 2017	$.00044 per kWh
February 1, 2017	$.00034 per kWh
January 1, 2017	$.00033 per kWh