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 |