Yes, Lutron shades can follow the sun. On Lutron RadioRA 3 and HomeWorks QSX systems, a feature called Natural Light Optimization moves each shade based on where the sun is compared with the window it covers. The system works from your home’s latitude and longitude and the direction each window faces. When direct sun reaches a window, its shades lower to a set position, and when the sun moves past that side of the house, they come back up. Below we explain how it works, what you need for it, and how sun-tracking shades fit together with your lighting, climate, security and entertainment.
How Natural Light Optimization works
Natural Light Optimization is part of Lutron HomeWorks QSX and RadioRA 3. Lutron first offered it for its motorized wood blinds and extended it to Palladiom, Sivoia QS and Triathlon roller shades in 2024.
- Each shade, or group of shades, is assigned the direction its window faces.
- The system calculates when direct sun hits each side of the house through the day and through the seasons.
- Every shade has three positions: one for direct sun, one for no direct sun and one for night.
- Lutron includes four starting templates, and your installer adjusts the timing and positions room by room.
So the east-facing breakfast room shades lower in the morning and open again by midday, while the west-facing family room shades stay open until the afternoon sun comes around. You can still override any shade from a keypad or the app whenever you want.
Why this matters in a New England house
Our sun changes a lot between seasons. In winter the sun sits low in the southern sky and reaches deep into south-facing rooms, which means glare on screens and bright patches across floors and furniture. In summer, west-facing rooms take the hardest afternoon sun and heat up. Shades that respond to each side of the house handle both without anyone remembering to press a button.
The other reason is fading. Wood floors, rugs, upholstery and artwork fade with years of direct sun. Shades that lower only when sun is actually on the glass protect them while leaving the rooms open the rest of the day.
What you need
- A RadioRA 3 or HomeWorks QSX system, programmed by a Lutron dealer.
- Compatible Lutron roller shades (Palladiom, Sivoia QS or Triathlon), wired or battery-powered.
- Good information about the house, mainly which way each window faces and how each room is used. Getting this information right is most of the setup work.
Caséta roller shades don’t get Natural Light Optimization, but the Lutron app lets you schedule shades at sunrise or sunset with an offset before or after. On older Lutron systems, a dealer can get close with timeclock events for each side of the house.
How shades fit into the rest of a smart home
Sun tracking is one part of what shades can do once they are connected to everything else. These are the integrations our clients use most:
- Lighting. On a Lutron system, shades and lights share keypads and scenes. A “Good Morning” button can open the bedroom shades and bring up soft lighting, and an “Entertain” scene can set every light and shade on the first floor at once.
- Climate. When the house is set to away in summer, shades on the sunny sides can stay lowered to keep heat out. Savant and Control4 can coordinate shades with your thermostats.
- Security. Shades can close when you arm the alarm at night. While you are traveling, a schedule can raise and lower them on a normal routine so the house looks lived in.
- Home theater and TV rooms. Starting a movie can lower the blackout shades and dim the lights in one step.
- Voice. Caséta and RadioRA 3 work with Alexa, Google Assistant and Apple Home. On HomeWorks, ask your installer which voice assistants your system supports. Josh.ai gives whole-home voice control on Lutron, Savant and Control4 systems.
Lutron alone, or Lutron with Savant or Control4?
Many of our projects use Lutron as the lighting and shade system and Savant or Control4 on top for audio, video, climate and security. Lutron handles what it does best, including sun tracking, and the main system adds shades to the same app and touch screens as everything else. In a home that only needs lights and shades, Lutron on its own is the simpler choice.
Getting the integration right
- Choose the system first. Shades that run natively on your lighting system are easier to live with than shades bridged in from another brand.
- Wire during construction when you can. Wired shades never need batteries and handle the largest windows.
- Keep keypads in the plan. Apps are handy, but most people press a button by the door. Engraved keypads make the system usable for guests and family.
- Plan the sun tracking with the room layout. A home office that needs glare control has different needs than a living room where you want the view.
- Test in every season. Ask your installer to check the timing after a few months, once the sun’s path has changed.
Large glass walls need their own planning, which we cover in our post on automated shading for large windows and glass walls. If your shades are already installed and acting up, our shade troubleshooting guide is a good place to start.
Planning a Lutron shade project?
We are an authorized Lutron dealer, and we design, install and program Lutron shades and lighting control across Greater Boston, the South Shore and Rhode Island. Book a free consultation or read more about our work as a Lutron installer in Boston.
