Integrated energy generation
Integrated energy generation is the strategy of embedding small-scale generators throughout a settlement. The daily activities of residents generate electricity or other forms of energy. While power produced by single devices will be small, all devices together may be able to supply a signifigant amount of energy.
Exercise equipment is a perfect fit for energy generation. Otherwise, the effort is wasted as heat or movement. Exercise may be encouraged by allowing colonists to sell their energy.
Clothing can harness natural movements. Targets include knees, elbows, shoes, and hips.
Integrated energy devices introduce added complexity to any item, increasing cost and maintenance needs.