[amsat-bb] Waiting for Solar Panel Efficiency (Ha!) rebuttal

Francesco Messineo francesco.messineo at gmail.com
Sat Jan 2 10:46:29 UTC 2016

On Fri, Jan 1, 2016 at 11:59 PM, Wouter Weggelaar <wouterweg at gmail.com> wrote:

> 5) There is no reason in The Netherlands to not have extra renewable energy
> sources. I really don't know how your "fossil fuel industry's opposition"
> can keep you from putting solar panels on your roof. I think everyone
> should!

Here in Italy we have a good amount of sunshine, yet the power
companies (and local laws) do what they can to discourage renewable
energy (it's not as convenient as it should be yet).

> A - they sensed each other as valid grid voltage, leaving an engineer
> unable to cut the power on a section of line. There was no way to shut
> these suckers off in case you need to work at the substation safely

grids still are too "old" in this respect, they expect to have a "one
way" direction for power flow, which is obviously not the case since
some years now. To safely work on a piece of grid, it must be "cut" in
more than one part.

> B - the grid frequency (50Hz here) would run away upwards until there were
> MOSFets flying everywhere. We literally had a dozen kill themselves when we
> did that experiment. It was huge fun though, hearing them scream ;)

all line inverters that I know have safe limits for grid frequency,
and after frequency crosses one of those limits, they just shut down
the power.

> Lastly, unfortunately my country is still pathetic in using solar power. we
> should really be doing more here and world-wide. Yes, we peaked at 100%,
> for a very short time though ;)

one good thing that european laws must do is to force all nations to
make all is worth to permit more renewable energy generation. I think
this isn't going to happen, at least soon, in my opinion.

Frank IZ8DWF

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