Solar energy can be used in more than one way. Most homeowners in Calgary are familiar with solar panels that generate electricity, but there are actually two main types of solar technology: photovoltaic (PV) solar and thermal solar. Both capture the power of the sun, but they do so for different purposes and with different benefits.

How Each System Works

Photovoltaic (PV) Solar: PV systems convert sunlight directly into electricity using semiconductor materials inside solar cells. The electricity can be used to power anything in your home, from lights and appliances to home offices and electric vehicles. PV systems are effective year-round, even during Calgary’s shorter winter days.

Thermal Solar: Solar thermal systems capture the sun’s heat instead of its light. The heat is transferred into a liquid, typically water or a heat-transfer fluid, which is then used to warm air or water for domestic use. Large-scale thermal systems can even produce electricity by heating fluids to very high temperatures, but residential systems are generally limited to water heating applications.

Seasonal Performance

Because PV solar produces electricity from light rather than heat, it works efficiently even on cold or cloudy days. Thermal solar, however, depends heavily on outdoor temperature and direct sunlight. This means that during Calgary’s winter months, thermal systems may not deliver consistent performance, while PV panels continue generating usable power.

Cost Comparison

Thermal solar systems are often more expensive to install because they require additional components such as pumps, heat exchangers, and insulated storage tanks. They also need ongoing maintenance to keep the system efficient and prevent freezing during cold weather. PV systems, by contrast, have no moving parts and a much longer lifespan, with minimal maintenance required.

While solar thermal can reduce your household’s water-heating costs, PV solar offers greater overall savings since it offsets a larger portion of your utility bill and can power your entire home.

Energy Storage Options

Energy use doesn’t stop when the sun goes down, which is why most PV systems can be paired with solar battery storage. Batteries store excess energy during the day and make it available at night or during power outages, helping homeowners stay powered and independent from the grid.

Thermal solar systems can only store heat. Some setups use insulated water tanks or underground reservoirs to retain heat for later use, but this is less flexible than storing electricity. PV systems therefore offer a stronger return on investment for most homeowners, especially those who want backup power or the option to charge an EV.

Which Is Better for Calgary Homes?

For most homeowners, PV solar is the practical choice. It delivers clean electricity, operates efficiently in all seasons, and requires less maintenance. Solar thermal may still be worthwhile for properties with very high hot-water needs, such as farms or multi-unit residences, but PV solar’s flexibility and lower cost make it the clear leader for most households.

Start Your Solar Project in Calgary

At Panel Upgrade Experts, we install high-quality solar PV systems in Calgary designed to maximize performance and reliability. Our team can also advise on whether solar thermal makes sense for your property. Contact us today to schedule a free site assessment and learn how solar can help lower your energy bills while increasing your home’s efficiency.