There may be places where you would want access to starches, agriculture is not feasible, transportation costs are prohibitive, but you also have abundant power. I’m struggling to think of a place that meets all those criteria.
* plenty of hydro power (which is why there’s data centers and battery recycling);
* agriculture isn’t possible outside with no sun and meters of snow; there’s greenhouses, including opaque ones with purely electric lighting but it’s expensive;
* transport by road is common, but harder in winter without fossil fuels and battery uncomfortable at -40ºC/F.
Any local activity could generate CO2, but the biggest existing one is paper mills.
The desert maybe?