On 5/25/20 2:47 PM, Lee Hart via EV wrote:
Robert Bruninga via EV wrote:
all meters except NET meters will charge you kWh no matter
which way the disk goes.
...except for the old mechanical meters, which ran backwards when you
generated power. The utilities have "fixed" that little problem with
their smart-aleck meters.
One of my neighbors has long contended that the utility charged absolute
value of energy flow. Just as Robert contends. The neighbor adopted
the strategy of trying to never over produce; that is use all PV energy
onsite rather than feeding the grid. With my first meter, I found that
to be not true and never tried to restrain my over production. I could
watch the wheel come to a stop and then rotate the other direction as my
PV power increased. I never had the patience to try to read the
rotating digits. I first came to the attention of my utility when I
started having a day or more of excess production and my meter readings
declined from day to day rather than increased. THEN, they put in a two
way meter that had accumulators for power both directions.
I'm sure there is a lot of variability from utility to utility and with
the meters that they use. But, I believe Robert's statement is
incorrect for at least some cases.
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