Russ Steele
We received a notice from PG&E that our house will be getting a SmartMeter real soon now. Calling the phone number on the PG&E flier seeking more details I discovered there is not much reliable information at the other end of the phone. I had done some research on the Internet and has some detailed questions about schedule, network architecture, radio frequencies used, chips sets used in the smart meters, etc. I ended up talking to PG&E Smart Meter Support Desk, the installation contractor Wellington Energy's help desk, and Silverspring Networks the network services provider’s tech support team. There seems to be some confusion especially on PG&E’s part about the schedule and what is really being installed in Nevada County homes.
Schedule: June to September, however Wellington the installation contractor has not received any installation orders. We will receive more letters from Wellington, with neighborhood schedules, once those orders are issued to the contractor.
Network Architecture: A self-configuring, redundant mesh network with information passed from house to house, then on to a collection point where the information is relayed to a server farm. The power and gas meter readings should be available on the Internet the next day for customer access. Electric power, hour by hour, and gas twice a day, in 12 hour blocks.
Network Frequency: 900 Mhz according to Silverspring, but PG&E thinks transmission is in the 460 Mhz frequency band. I am voting for the 900 MHz band, however the PG&E documents provided to the CPUC indicate a licensed dedicated frequency will be used. The 900 Mhz band is for unlicensed use, shared with hundreds of other users from radio controlled toys to wireless phones. More research is needed.
Meter Manufacture: Both GE and Landis +Gyr, smart meters and it appears that both use the Zigbee chips sets, but no one I talked to could confirm this information. The Zigbee chip security is based on a 128-bit AES algorithm and the IEEE 802.15.4 communication standard. Humm Developer Joshua Wright just released KillerBee, an open source collection of Linux tools intended for testing the security of ZigBee networks. In other words tools for cracking the security. A Zigbee Network hacking book will be published in September by O'Reilly. More on this in a future post.
It is going to be an interesting summer. I will be exploring some of the potential SmartMeter Privacy issues in my
Off the Top of My Head Column for the CABPRO Magazine in July. Stay Tuned, I will be posting regular updates on the process and implications for home owners.
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