How Much Water Can Solar Water Heaters Store? Capacity Guide for Homeowners

When switching to solar water heaters, homeowners often ask: "But how much water can these systems actually store?" Well, the answer isn't one-size-fits-all. Solar water heater capacities typically range from 80 liters (21 gallons) for small apartments to 620 liters (164 gallons) for large households, according to the 2024 Solar Energy Industry Report . Let's unpack the key factors influencing storage capacity.