Solar thermal: using sunlight as heat

Informational adaptation of the original LinkedIn post’s topic and available supporting material. The date shown is the original post date; wording reviewed September 2026.

Solar energy can provide heat directly as well as generate electricity. Solar thermal systems collect energy for a thermal use, while photovoltaic systems convert sunlight into electricity.

Start with the heat demand

The value of a solar thermal system depends on the temperature required, when heat is needed and how closely that demand matches available sunlight. Storage and an existing backup heat source can be important parts of the design.

The accompanying photograph was supplied for the original solar-thermal post. It is retained as an illustration of the topic, without assigning an unverified model, capacity or performance result.

For a building owner, the useful comparison is between complete options for meeting the same heating need, including installation, operation and maintenance.