Mining, oil, and gas extraction is the single largest sector in Alberta's GDP — roughly 18.9% of provincial output in the most recent data. But the real story isn't the direct percentage. It's the multiplier effect.
When an oil company invests $1 billion in a new project, that money cascades. Construction firms get contracts. Engineering companies hire. Restaurants near work camps fill up. Real estate agents sell houses to relocated workers. For every $1 of oil GDP, roughly $2.50 circulates through the broader Alberta economy.
Monthly GDP at basic prices ($M) — key sectors compared
Watch the sector lines carefully during downturns. When oil and gas GDP drops, construction follows within 6 to 12 months — because fewer projects mean fewer cranes. Then real estate softens 12 to 18 months after that — because fewer jobs mean fewer buyers and more people leaving the province.
The chart makes this cascade visible. Look at 2015-2016: oil GDP collapses, construction follows a few quarters later, then real estate flattens out. The same pattern played out in 2020. These aren't coincidences — they're the gears of Alberta's economic machine.