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EnOcean-based wireless lighting controls, manufactured by Echoflex Solutions, demonstrated significant energy savings in independent testing and lived up to the task of shedding peak loads during Demand Response events. Wireless dimming controls were installed in an Energy Solutions office building in Oakland, Calif., to assess the Smart Grid potential of the wireless automation controls. Within seconds of receiving PG&E utility Demand Response signals, the Echoflex system reduced lighting levels in scale with utility-prescribed Demand Response levels. Onsite verification and monitoring showed that the EnOcean-based wireless sensor network provided reliable means of propagating DR signals throughout buildings in response to DR events.Echoflex’s energy harvesting wireless system earned additional accolades when the contractor found it “easy-to-install even though they had no experience with system.”

The energy harvesting and wireless technologies embedded in EnOcean-based controls radically overcome installation barriers associated with “hardwired” solutions. In this case, the DR goals were met without the intrusive installation costs historically present in hardwired retrofit installations. The DR signals are carried over-the-air, through walls and ceilings to shed lighting energy loads in the office building. The study showed that the price of batteryless and wireless solutions is more cost-effective for retrofit applications than traditional wired controls.SMART GRID COMMUNICATIONSEnOcean-based wireless controls fit into the demand side of the overall DR scheme. The test DR signal was scheduled and initiated by Lawrence Berkeley National Laboratory. Via the internet, the DR signal went from the utility to a DRAS (Demand Response Automation Server), then entered the host building site’s CLIR (Client and Logic with Integrated Relay). Once inside the building, the Echoflex solution wirelessly propagated the DR signal throughout the building. For DR purposes, the Echoflex controllers can be commissioned to turn on or off a single ballast, group of ballasts, or entire circuit, or dim one or multiple ballasts in response to a DR signal broadcast. The Echoflex solution can facilitate energy reductions via bi-level lighting and/or dimming.After testing concluded, Echoflex, an innovative solution provider and quick study, reacted to the independent assessment and improved their “Complete Room Controller” model (EDRC – C) by reducing the customization required to receive and interpret DR signals. They also simplified on-site commissioning.