Solar energy health risks are inherent to the design and installation of most thermal energy systems. These are the systems designed to heat water and air for household use.
Solar water heaters complete three basic operations before delivering hot water to your faucet or your heating unit:
1. collect sunlight and convert it into heat energy.
2. circulate fluids that transfer the heat energy to a storage unit
3. store the hot water until you need it
The solar energy health risks with such a system usually occur in the storage units. Some units allow for the growth of allergenic molds and fungi.
If proper materials are used for the storage unit, however, these solar energy systems present few, if any, health risks. Their advantages are that they are far safer than most fossil fuels or nuclear power - they have no emissions and do not pollute the air.