Solar panels gonna be useless?

mehwish13 said:

have to use it in night

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Solar-panels? at night? Powered by the moon?

Alone this tells me how authentic the information is.

*****

mehwish13 said:

Any one who can confirm if it's authentic or not?

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We don´t know where you live nor what your government is.
I´d go on your government´s or electrical energy provider´s internet site to get first hand informations. Black on white. Don´t rely on hearsay.

****
In my country the government is more likely to (it changes from time to time) support the installation of solar panels.
It surely may depend on size (kW peak), private vs industrial usage, battery usage, on-grid, off-grid, area, quality of mains distribution grid ... and so on.

Klaus

I live in US where Mad Hatter Tea Party is the primary function of todays government.

Please don't suggest this to the UK government, they want to tax us to death already.
We do have a "feed in tariff" scheme where power you produce but don't use can be fed to the grid and you receive a payment per KWH for it but I'm sure they would want it changed so you pay more for power you generate for yourself and they give you more back for solar power produced overnight.

Brian.

With our new government leaders in the US, anything is possible.

I recall going back decades (off and on) rebate programs being offered when people installed solar panels. Apparently enough homeowners did so that the electric companies had to report lower earnings. Next thing they raised their rates for electric power all round. Regardless what we do the cost of living keeps going up.

The government of the country where I live, many years ago, encouraged the installation of solar panels by charging a zero rate; last year, this exemption was dropped, and unfortunately I installed just after that; but there is a lobby from electricity distribution companies here to overcharge to a prohibitive value, claiming that the excess of Photovoltaic converters will affect the blah blah blah in the electricity grid.

andre_luis said:

Photovoltaic converters will affect the blah blah blah in the electricity grid.

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I have good relations to a private power distributor company .. supplying more than 1200 housholds. So I´ve experienced it first hand.

In the 1980ies ... they drew about 1.5MW peak. And in the remote areas the voltage drop has to be compensated by using a higher voltage transformer tap.
This was a fix installation, not "on demand". Thus in times with low power demand .. the voltage drop was less ... and you risked to get overvoltage at remote places.
(where the higher voltage tap was used)

Nowadays .. due to solar panel installation .. this 1200 housholds not only supply themselves with energy (for sure they still are connected to the European grid), but they produce a peak of over 3.5MW to be supplied back into the grid (in additiona what they consume. This 3.5MW is just the over power of the 1200 households).

This generated a whole more difficult problem. Now at remote places they still draw the peak (night in winter) causing a voltage drop ... but then they generate a high voltage due to over power in the grid. Now especially in the remote places you have a huge voltage shift from a winter night to a sunny summer day.

Transmission lines needed to be renewed, new more powerful transformers needed to be installed. Dynamic voltage adjustments needed to be installed.
All at a time where the power distribution company sells less energy (over the whole year) to the cutomers. They sell less kWh per year .. but have huge effort to compensate for the solar panels installed.

It´s not only bla bla .. there surely is a bit of truth.

Klaus

There is also an interesting issue of phase synchronizing. Household PV normally uses grid tied inverters so they have to generate an equal or slightly higher than grid voltage and feed it on the house side of the utility meter. To do that the waveform they produce has to be very accurately phase matched to the AC coming in from the grid. That means the grid must produce the dominant waveform, if too many GT inverters are connected in parallel there is a risk that instead of locking to the grid, they start trying to lock to each other. Switched on one by one should be fine as each will reach sync and if anything reinforce the waveform for the next to be turned on but an interesting phenomenon could occur if enough were in operation in parallel and the incoming grid failed and there were enough that each thinks the waveform from its neighbors was the one to phase lock to.

Brian.

KlausST said:

Solar-panels? at night? Powered by the moon?

Alone this tells me how authentic the information is.

*****

We don´t know where you live nor what your government is.
I´d go on your government´s or electrical energy provider´s internet site to get first hand informations. Black on white. Don´t rely on hearsay.

****
In my country the government is more likely to (it changes from time to time) support the installation of solar panels.
It surely may depend on size (kW peak), private vs industrial usage, battery usage, on-grid, off-grid, area, quality of mains distribution grid ... and so on.

Klaus

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Yes, it’s definitely possible to use solar power at night through a battery. I have a lithium battery, which has been a great addition to my solar panel system. It was recommended to me by w11stop.com

mehwish13 said:

Yes, it’s definitely possible to use solar power at night through a battery.

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No. Technically you can not use the solar cells at night. SOLAR means SUN. You need sunlight for them to work.

For sure you can store the energy during the day into a battery ... but post#1 does not mention batteries at all. (neither "solar system", nor "storage")
--> Then you use battery power at night.

Many solar systems (I´d say the very most in my country) don´t have batteries. So how could I know that you have batteries in your solar power system?

Now you say you have a solar power system.. so you have first hand informations. Then you can tell your brother in law.
Or you can tell your brother to ask the company you linked to. (The link could be rated as hidden advertisement, because I see no use for us regarding the thread topic.)

Klaus