One of my friends sends me an email about a local state rep who is
preseinting to the Md. Public Service Commission a "case" to allow
people to reject smart meters. Nowhere does it say what kind of
meter, and I'm thinking it might means taximeter or galvanometer, but
I guess it means electric meters. Or gas meters?
Is there any reason to reject one?
BTW, the state rep also has a 2-hour show each week on the local wacko
There are at least three schools of thought
1. they are a radiation hazard since they RF the data back to the host
2. they are a privacy problem because they can send usage data in real
3. they do not read low like a 40 year old, worn out mechanical meter
so you bill will go up.
#3 is probably driving the other two.
Agree-- but you missed
#4 - they are new so they must be evil.
I was surprised that I didn't notice when they replaced my 30yr old
electric meter that I didn't notice a spike.
My water went up a bit when they replaced that 40+ yr old one-- but
not enough to worry about.
On Tue, 15 May 2012 00:05:49 -0400, email@example.com wrote:
3a) Many of these new smart meters are programmed to read high with
certain loads. They don't give credit for power returned to the grid.
Resulting in bills 5 to 15% higher than previous..
3b) The Filters in Smart meters are not as good as those in old meters
and can result in gross errors..
3c) Like all modern electronics.. Limited lifespan.. 5-7 years.. And
when they fail the customer is likely to get screwed..
4) Can turned on and off the customers electric service remotely.
5) Can remotely switch your service from 220v to 110v. (thus disabling
all 220v appliances, A/C, stove, pumps, etc).
6) Wireless protocal is going to be hacked. It's not a matter of if,
but when, and by whom. The consequences to society could be enormous.
Are you saying that smart-meters don't measure inductive, reactive or
non-linear loads correctly - such that they err on the side of the
What returned power?
If you're referring to power generated by the customer (solar, wind,
etc) then (a) very few home-owners have a co-gen installation, and (b)
those that do are paid by the utility for any power they generate
through special feed-in tarrif programs and would have a separate meter
installed to measure the feed-in amount.
(other technical reasons - unverified but possibly true)
Beyond those possible technical reasons, smart-meters represesnt a false
economy because their installed cost far outweighs any benefit to the
residential user in terms of the possible savings they might achieve in
time-shifting their electricity usage to reduce peak-load demand for the
Certain motorised devices also act as generators and return a
percentage of that energy back to grid in backside(90-180, 270-360
degrees) of each AC -phase.
Instead of getting a credit for that returned energy, you get double
billed. (According the GE engineers).
From what I've heard, talking to smart meter installers, they don't
change out the meter for net-metering customers who've signed
That I would agree on. I've been reading my meter daily for last 6
years, so I really don't need the online featues and the loss of
IMHO you are confusing cyclic power flow reversal that is produced by
every inductor and capacitor with net power reversal that might result
from photovoltaic installations. And the meter likely can sense if it is
installed upside down.
It is inconceivable that the meter does not register cyclic reversal
caused by inductors and capacitors. The net power flow is always toward
the load, and unless there is a lot of inductive load is likely toward
the load at any instant. You are saying the watt-hour meter does not
measure routine watt-hours.
Filter circuit? I would be real surprised if the new meters don't sample
voltage and current, multiply, and integrate.
There's no chance it's anything else but fully digital--think how little
it takes to do audio these days and they're sampling at probably
somewhere in the 3-500 Hz range which is 10X under audio...
On the net metering idea, GE datasheet indicates it is a factory option
and FPL has a request form for customers to fill out to request a net
metering installation so there's all that seems to be needed.
And indeed, the meter has tampering detection built in; I'm quite
certain that will include something as basic as upside down installation
altho in high likelihood that is taken care of by orientation-specific
mounting that only allows one direction.
Here is a first hand story, different make and model but the I-210+ would have
In this case a new homeowner purchased a house that had a grid tie PV
the power co's new smart meter was charging her for every watt hour the PV
system put back
into the grid.
The default configuration of the I-210+ is to add together both power received
delivered and report that as (register 1) total energy consumed.. See page 9
6, center column(I-210+) for more info..
Any electronic measuring device is going to need a filter, otherwise rf nosie
brushes, poorly designed switching power supplys, arcing, etc) can/will be
sampled and result in gross errors.
But the story below is exactly what Bud is talking about.
I think the meters do correctly measure reactive power. As
Bud said, with any realistic load the power is always
going to be flowing into the home. The case in the story
is that the meter does not register power when the
net flow is going back into the grid, ie the solar cells
are producing more power than the house is using.
The reactive thing is an instantaneous change in the net flow
going into the house. Like Bud, I believe the meters
would have to measure that. The other is when power
is constantly flowing into the grid from the solar cells
producing more power than the house uses. That I
can see the meter not measuring unless it is properly
On 5/31/2012 4:43 PM, firstname.lastname@example.org wrote:
As the brochure says the GE meter has four possible configurations that
are factory configured. FPL has a request form for its customers to
fill out if they have reason to request a net usage meter and then they
will install it. Problem solved.
I'd be quite comfortable in betting that the utility of the lady in
question above has a similar way to handle the problem.
On 5/31/2012 7:33 PM, email@example.com wrote:
In this day and age there's zero chance it isn't anything else.
As for filtering, there are whole series of parts available for
anti-aliasing...a typical app note on why/how...
One can be sure GE has implemented the function one way or
another--either w/ a custom part or by integrating an off-the-shelf
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