AI Analysis: Electric power generation, monthly receipts, deliveries and availability

Executive Summary

Statistics Canada's Table 25100016 provides 18 years of monthly electric power data (2008–2025) across 14 Canadian regions and 17 components, totaling 36,528 rows and revealing a highly skewed distribution where a mean of ~2.2 million MWh dwarfs a median of ~178,000 MWh. Canada's domestic electricity generation is remarkably stable — showing zero IQR-based outliers over the full period — with Total Generation, Total Availability, and Total Deliveries moving in close alignment and exhibiting clear seasonal patterns. Cross-border electricity flows with the United States represent the primary source of variability, including a notable spike in US electricity imports in June 2008 that reached nearly 4 standard deviations above normal.

Key Findings

• The dataset spans 216 months (January 2008 – December 2025) across 14 geographic regions and 17 component types, comprising 36,528 rows and 170 unique time series vectors all measured in MWh.
• The data is heavily right-skewed: the mean value is ~2,195,023 MWh while the median is only ~178,178 MWh, with a standard deviation of ~7,024,172 MWh — more than 3x the mean — reflecting extreme variability across components and regions.
• Canada's Total Generation showed zero outliers using the IQR method across the entire 2008–2025 period, indicating highly consistent domestic electricity output over nearly two decades.
• The Z-score method identified 15 extreme data points concentrated in cross-border flow components, with the single largest anomaly being a spike in Purchased Receipts from the United States in June 2008 (3,456,709 MWh, z-score = 3.99).
• Total Generation, Total Availability, and Total Deliveries are strongly positively correlated and track each other closely over time, reflecting a well-balanced national electricity system with minimal surplus or deficit.
• Cross-border variables — including Deliveries to the United States, Firm Deliveries, and Non-Firm Deliveries — are tightly correlated with one another, while Purchased Receipts from the United States is a dominant driver of Total Receipts.
• MWh values range from -11,739 to 66,771,096, with negative values likely reflecting net flow adjustments, and 75% of all records fall below 1,342,947 MWh — confirming that most monthly readings are at relatively modest volumes.