Yes. Or, at least, multiple power sources besides solar.

The same reactor designs that work for the Moon would work on Mars. Due to sandstorms, nuclear power is a necessity on Mars. Depending on the location of the colony, carbon dioxide ice deposits can function as heat sinks.

Martial dust gets everywhere, and that's why the colony will not place critical infrastructure on the surface.

Building redundant life-support infrastructure, however impractical, is a hard requirement for any off-planet colony. That's why any realistic approach will start by launching a massive amount of supplies and equipment before the first human is settled. That means there will always be enough water and food to supply the colony until another supply landing can arrive. Living on a planet where you can't open a window to the atmosphere is hard and dangerous, but also required if we want to survive in the long run.