Direct answer
Hardwired shades are generally preferred during new construction or major remodeling because they eliminate routine battery service and support a clean, permanent installation. Battery-powered shades are often the better retrofit solution because they avoid opening walls. Somfy outlines several power methods in its official FAQ.
Battery life varies with shade size, fabric weight, motor, movement frequency, temperature, radio conditions, and battery type. Manufacturer estimates are not guarantees for every opening. Rechargeable systems need a practical charging plan, especially at tall windows. During construction, specify motor locations, cable, power-supply access, pockets, and service loops before drywall. In a retrofit, compare the ongoing service burden with the cost and disruption of adding permanent power.
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.