Section 170IAC4-7-5. Energy and demand forecasts

   (a) An electric utility subject to this rule shall prepare an analysis of historical and forecasted levels of peak demand and energy usage which includes the following:

(1) An historical and projected analysis of a variety of load shapes, including, but not limited to, the following:

(A) Annual load shapes.

(B) Seasonal load shapes.

(C) Monthly load shapes.

(D) Selected weekly and daily load shapes. Daily load shapes shall include, at a minimum, summer and winter peak days and a typical weekday and weekend day.

(2) Historical and projected load shapes shall be disaggregated, to the extent possible, by customer class, interruptible load, and end-use and demand-side management program.

(3) Disaggregation of historical data and forecasts by customer class, interruptible load, and end-use where information permits.

(4) The use and reporting of actual and weather normalized energy and demand levels.

(5) A discussion of all methods and processes used to normalize for weather.

(6) A twenty (20) year period for energy and demand forecasts.

(7) An evaluation of the performance of energy and demand forecasts for the previous ten (10) years, including, but not limited to, the following:

(A) Total system.

(B) Customer classes or rate classes, or both.

(C) Firm wholesale power sales.

(8) If an end-use methodology has not been used in forecasting, an explanation as to why this methodology has not been used.

(9) For purposes of section 5(a)(1) and 5(a)(2) [subdivisions (1) and (2)], a utility may use utility specific data or more generic data, such as, but not limited to, the types of data described in section 4(2) of this rule.

  (b) A utility shall provide at least three (3) alternative forecasts of peak demand and energy usage. At a minimum, the utility shall include high, low, and most probable energy and peak demand forecasts based on combinations of alternative assumptions such as:

(1) Rate of change in population.

(2) Economic activity.

(3) Fuel prices.

(4) Changes in technology.

(5) Behavioral factors affecting customer consumption.

(6) State and federal energy policies.

(7) State and federal environmental policies.

(Indiana Utility Regulatory Commission; 170 IAC 4-7-5; filed Aug 31, 1995, 9:00 a.m.: 19 IR 21; readopted filed Jul 11, 2001, 4:30 p.m.: 24 IR 4233; readopted filed Apr 24, 2007, 8:21 a.m.: 20070509-IR-170070147RFA; readopted filed Aug 2, 2013, 2:16 p.m.: 20130828-IR-170130227RFA)