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Off Grid Solar and Vehicle Charging

€œYes, and no… The solar panels are hooked into the grid, and the power drawn
from the chargers comes from the grid. This is something I have been asking
about, trying to get a clear answer. If the power were to go out, a black out
for example, storm whatever, the solar array automatically shuts down. There is
no transfer switch enabling the chargers to draw electricity directly from the
panels, which I find unfortunate since the inverter would enable the chargers to
draw directly from the solar array to provide electricity in times of outages
during daylight hours. But it seems there is a law our utilities have imposed,
that stand alone systems are not allowed to be hooked up to the grid in
Connecticut. There are states right now suing their utilities over just that
issue. If anyone has details on similar actions in Connecticut, I would like to
know. All of the PV systems installed in the state right now, cannot legally
provide power in times of emergency because of this law, which the utilities
claim is to protect their linemen, but which I suspect is just another way to
limit the rate of growth of the solar industry.”

There are a number (10-20) solar systems within CT that contain off grid
functionality during a power outage. These systems are typically ~ twice the
cost of grid tied only systems. All these systems utilize a stationary battery
plant to stabilize the power flow. There is a new inverter that has recently
been announced without a battery system that provides off grid power but at 1/4
the on grid level.

There are a number of guidelines in all states that specify how generation is to
be interconnected to the power grid. These specifications protect the utility
company employees, and other customers service. None of these rules restrict off
grid operation.

There is a recently enacted law in CT that allows for the creation of microgrids
this law allows for properly configured generators to interconnect through
utility cables in the event of larger grid outage.

If you would like to talk further off list let me know.


source <a href=”″>NEEAA</a>


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