Skip to main content

Table 8 Structural break regression of relationship between system peak and nonpeak demand

From: Electricity peak demand in Uganda: insights and foresight

Dependent variable = peak energy sales   
  Coef. Std. err. T
Nonpeak energy sales (NP) 1.30*** 0.12 10.72
Dummy (D) 130.11*** 44.74 2.91
Interaction (NP*D) −0.79*** 0.27 −2.95
Constant −75.66*** 18.38 −4.12
Obs. 44   
F(3, 41) 103.59***   
R-squared 0.88   
Adj. R-squared 0.87   
Individual results    
 M1_Before Jan 2013 (Jan 2011–Dec 2012)    
  Coef. Robust std. err. Z
  Nonpeak energy sales (NP) 1.30*** 0.10 12.88
  Constant −75.66*** 16.01 -4.73
  M1_log variance    
  Constant 3.65*** 0.22 16.88
 M2_After Jan 2013 (Jan 2013–Sept 2014)    
  Nonpeak energy sales (NP) 0.51*** 0.08 6.11
  Constant 54.44*** 14.06 3.87
  M2_log variance    
  Constant 1.60*** 0.20 7.84
  1. Significance levels: *** = significant at the 1% level, ** = significant at the 5% level, *= significant at the 10% level