Complex sentence: Planetary Resources also expects that the construction of "space infrastructure" will help to reduce long term running costs, for example, fuel costs can be reduced by extracting water from asteroids and converting it to hydrogen using solar energy.
Split into simpler sentences: Planetary Resources also expects that the construction of "space infrastructure" will help to reduce long-term running costs. For example, fuel costs can be reduced by extracting water from asteroids and converting it to hydrogen using solar energy.