Dear Solar Guy,

I have been interested in getting solar panels, however, I'm
concerned about the possible effects, if any, of the upcoming
solar storms.  I know the storms are suppose to disrupt satelite
transmissions and possibly affect power grids.  However, I'm
concerned if the solar storms can have a negative effect on
those who already use solar panels and those (like myself) that
are considering purchasing them.

If possible, please let me know the possible effects of the
solar storms on those who do own panels or on the total solar
home energy system.  Thanks!

Darryl B.
Katy, TX

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Dear Darryl,

Good question.

I think it unlikely to have any noticeable effect. Solar storms
amount to a higher than average flux of charged particles coming
from the sun (the "solar wind"). In effect, an electrical current
flowing through space. Electrical currents generate magnetic fields,
so the fields from a changing solar wind can cause the Earth's
magnetic field to fluctuate. A wire that experiences a changing
magnetic field has current flow induced in it. Such (very small)
fluctuations can induce large currents in the very long wires that
make up power grids and communication networks, possibly leading to
failures.

This is an electrical effect. By contrast, photovoltaics are
responsive mainly to visible light, and would be unaffected (though
any variations in solar radiation during solar storms would result
in a corresponding change in PV output). The wires associated with 
a home PV system are very short compared to cros-country transmission
lines, so although they would experience some effect from changing
magnetic fields, the effects would be minute. Of course, Solar Themal
systems such as solar water heaters would be basically unaffected.

- Chuck Wright