Reference Design for Residential Energy Gateway Charlie Smith

Reference Design for Residential Energy Gateway Major Issues identified for Residential access through AMI Proliferation of protocols both proprietary and open Rate Structures Management processes Desired Solution

Smart Appliance Communication – Zigbee/Homeplug ZigBee Smart Energy Profile 802.15.4 Custom Commands for HEM Mesh network communication Direct tie to meter ZigBee Smart Energy Profile 802.15.4 Home Energy Manager Home plug interface ZigBee transmitter

Reference Design for Residential Energy Gateway Proliferation of protocols both proprietary and open Hardware adaptors such as U-Snap are the options for HAN devices today Administration of adaptors will be a nightmare for Utilities, consumers and vendors Registration in the networks and to the utility (binding) is difficult for consumers to understand and execute Troubleshooting of communication problems in the residence will be difficult, who owns the problem? Concern around propagation of HAN signals in the residences Concern around security of protocols

Reference Design for Residential Energy Gateway Rate Structures Rate structures will have an impact on information that needs to pass though a gateway system. TOU – Simple Critical Peak Pricing – real time signal Demand Limiting – Sync to meter for measurement period Real Time 24 hour day rates will require proper formatting and scaling Appliance will respond in only 4 – 5 levels that will need to be scaled to the absolute min and max of the seasonal rate

Reference Design for Residential Energy Gateway Management processes concerns Consumer preferences user interface will be very important Tariff will impart control methodology (Demand vs Usage) Translation of preferences into control strategies Thermostats Smart Appliances Load Control Devices (pool pumps) Consumer must be able to provide override

Desired Solution for Smart Appliances Development of a low cost technology that can adapt to any and all HAN protocols as an interface to Smart Appliances.