Direct answer
They can reduce unwanted solar gain and improve comfort when the shade, fabric, orientation, glazing, side gaps, and schedule are matched to the window. Automation adds value because shades can move consistently before high solar load rather than relying on someone to notice the room is already hot. The effect is usually greatest at exposed windows and should not be treated as a fixed percentage for every home.
Shades do not repair inefficient glazing, air leakage, undersized HVAC, or poor insulation. They can also reduce daylight or view, so the control strategy should balance heat, glare, privacy, and occupant preferences. DOE's cellular-shades fact sheet supports energy-saving potential while noting that cooling-season and control-strategy evidence is still developing. Measure actual utility and comfort results instead of promising guaranteed savings.
Sources and technical references
Use the organizations responsible for a product, platform or standard to confirm current specifications and compatibility.
How this answer was prepared
Camelback Smart Homes publishes this FAQ library for homeowners, design professionals, builders and property teams comparing integrated technology. Answers begin with the practical conclusion, then explain the factors that can change it.
Limitations: This is general educational information, not a site-specific design, quote, code determination or compatibility guarantee. Final requirements depend on the property, construction, infrastructure, equipment versions and project goals.