1. Reference Design for Residential Energy Gateway
Charlie Smith

2. 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

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

4. 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

5. 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

6. 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

7. 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.