In most cases, the pros outweigh the cons, but there are disadvantages to solar energy: • Energy is only generated in the sunlight, so a backup energy source is needed. Furthermore, houses that don't get a lot of sunlight can't properly utilize the technology. • Purchasing a system often requires an upfront cost or a short-term loss in income.  • If you need a large amount of energy, you'll need a lot of space to accommodate the solar panels. • Although solar energy is much cleaner than traditional sources, it still impacts the environment. Transporting solar panels leaves a carbon footprint, and toxic chemicals are used in manufacturing.