Bratsk

Bratsk is what happens when a city is built to turn river power into export metal. Irkutskstat puts Bratsk at 219,400 residents on 1 January 2025, far below the older GeoNames baseline of 256,600, and the city sits 443 metres above sea level on the Angara near the Bratsk Reservoir. Officially it is one of Irkutsk Oblast's industrial centers. In practice it is one of the clearest examples in Eurasia of a settlement organized around one energy bargain.

The Wikipedia gap is that Bratsk is not just a Soviet company town that happens to have a dam. The dam and the smelter form one metabolic system. Bratsk Hydroelectric Station has installed capacity of 4,500 MW. Rusal says the Bratsk aluminium smelter consumes about 75% of the power generated there and produces around 1 million tonnes of aluminium a year, equal to 30% of Russian aluminium output and 4% of world output. That is an extreme conversion ratio: a river is translated into one industrial product at global scale. The city still produces about 20% of the industrial output of Irkutsk Oblast, but recent local reporting also shows the other side of the equation. Even with a 2024 migration gain of 548 people, Bratsk's long-run population trend remains downward.

That is resource allocation hardened into keystone-species dependence. Bratsk works because the city, dam, smelter, timber plants, and transmission system were all laid on top of the same cheap-energy logic. Phase transitions define the risk. Change electricity pricing, sanctions access, carbon penalties, or environmental constraints, and the whole urban metabolism can flip from advantage to burden very quickly.

The closest organism is a sea anemone. A sea anemone does not roam for food; it anchors itself where current is strongest and lives by capturing the flow that passes through one fixed point. Bratsk does the same with hydropower. The problem is that anchored systems are hard to rewire. When the current changes, the organism cannot simply walk away.