Sunology Solar Station - will this work?

markin

Yes, i read the "yearly in-plane irradiation" by mistake!

That Growatt Inverter isn't a micro inverter and is far more expensive, And at 750w and a DC Startup Voltage of 50 V wouldn't work well with just 400w or at all with a single panel, All other Chinese micro inverters in that price range seem to fail after just 6 months - year according too most of the amazon reviews, The sellers seem to remove and re-post often to wipe the bad score and comments.

It would be Plug and Play in UK just not legal, But could be legal if the law was changed tomorrow to follow France and Germany.

nxdmsandkaskdjaqd

CSI_Yorkshire said:

nxdmsandkaskdjaqd said:

When plug in, how does the house know to use electric from the panel verse grid?

It doesn't know.

That's just how electricity works.

It's like saying if you fill a bucket with a tap and a hose at the same time, how does the bucket know where to get the water from.

So with these small plugin and play systems.  Any energy that you generate from the solar panels could be sent to the grid and not be used by your house? Is that right or am I missing something?

MultiFuelBurner

nxdmsandkaskdjaqd said:

CSI_Yorkshire said:

nxdmsandkaskdjaqd said:

When plug in, how does the house know to use electric from the panel verse grid?

It doesn't know.

That's just how electricity works.

It's like saying if you fill a bucket with a tap and a hose at the same time, how does the bucket know where to get the water from.

So with these small plugin and play systems.  Any energy that you generate from the solar panels could be sent to the grid and not be used by your house? Is that right or am I missing something?

As I have read it if you don't use it you lose it.

But it has been an interesting read and perhaps something that will be allowed in the future for UK households just as plug and play.

markin

nxdmsandkaskdjaqd said:

CSI_Yorkshire said:

nxdmsandkaskdjaqd said:

When plug in, how does the house know to use electric from the panel verse grid?

It doesn't know.

That's just how electricity works.

It's like saying if you fill a bucket with a tap and a hose at the same time, how does the bucket know where to get the water from.

So with these small plugin and play systems.  Any energy that you generate from the solar panels could be sent to the grid and not be used by your house? Is that right or am I missing something?

Its a higher voltage and will always be used in the house if it can before trying to push out to the grid.

CSI_Yorkshire

nxdmsandkaskdjaqd said:

CSI_Yorkshire said:

nxdmsandkaskdjaqd said:

When plug in, how does the house know to use electric from the panel verse grid?

It doesn't know.

That's just how electricity works.

It's like saying if you fill a bucket with a tap and a hose at the same time, how does the bucket know where to get the water from.

So with these small plugin and play systems.  Any energy that you generate from the solar panels could be sent to the grid and not be used by your house? Is that right or am I missing something?

Electricity can't flow both directions on the same bit of cable at the same time.  So, the cable from your house to the grid is either flowing one way or the other.

It can't be sending energy from solar panels to the grid at the same time as taking energy from the grid to power your house.

markin said:

nxdmsandkaskdjaqd said:

CSI_Yorkshire said:

nxdmsandkaskdjaqd said:

When plug in, how does the house know to use electric from the panel verse grid?

It doesn't know.

That's just how electricity works.

It's like saying if you fill a bucket with a tap and a hose at the same time, how does the bucket know where to get the water from.

So with these small plugin and play systems.  Any energy that you generate from the solar panels could be sent to the grid and not be used by your house? Is that right or am I missing something?

Its a higher voltage and will always be used in the house if it can before trying to push out to the grid.

Not really anything to do with voltage in a practical sense.

QrizB

markin said:

That Growatt Inverter isn't a micro inverter and is far more expensive, And at 750w and a DC Startup Voltage of 50 V wouldn't work well with just 400w or at all with a single panel,

When I clicked on the amazon.de link to the microinverter last night, it was showing a price of about 200 Euros - not that dissimilar to the Growatt. This morning I see it's 120 Euros but no option for UK delivery.

The only option I can see on amazon.co.uk is £400 although I also see the 350 watt version is £86 which is more reasonable.

Point taken about the startup voltage, but it would be an excellent match to two 36-cell panels in series (~800 watts) and still be around £600 as a DIY fit.

markin said:

All other Chinese micro inverters in that price range seem to fail after just 6 months - year according too most of the amazon reviews, The sellers seem to remove and re-post often to wipe the bad score and comments.

I have no experience of using these things. If Hoymiles have a reputation for reliability I can appreciate why they make a good example.

CSI_Yorkshire said:

nxdmsandkaskdjaqd said:

So with these small plugin and play systems.  Any energy that you generate from the solar panels could be sent to the grid and not be used by your house? Is that right or am I missing something?

Electricity can't flow both directions on the same bit of cable at the same time.  So, the cable from your house to the grid is either flowing one way or the other.
It can't be sending energy from solar panels to the grid at the same time as taking energy from the grid to power your house.

That (in bold) is the simplest explanation I've yet seen. I might use it in future!

nxdmsandkaskdjaqd

So I just wanted to check my understanding based on the replies.  For example: an off grid - balcony - plug in play system will always use the energy from the solar panels first.  Is that correct?

QrizB

nxdmsandkaskdjaqd said:

So I just wanted to check my understanding based on the replies.  For example: an off grid - balcony - plug in play system will always use the energy from the solar panels first.  Is that correct?

Yes.

The house will not be able to draw electricity from the grid unless the demand exceeds what is being generated by the solar panels.

markin

nxdmsandkaskdjaqd said:

So I just wanted to check my understanding based on the replies.  For example: an off grid - balcony - plug in play system will always use the energy from the solar panels first.  Is that correct?

'off grid' Means no connection at all to the grid, using batteries or directly charging or powering a device, light or phone.

The plug and play micro inverters are On Grid, They see the grid and can send power out to the grid if allowed.

nxdmsandkaskdjaqd

markin said:

nxdmsandkaskdjaqd said:

So I just wanted to check my understanding based on the replies.  For example: an off grid - balcony - plug in play system will always use the energy from the solar panels first.  Is that correct?

'off grid' Means no connection at all to the grid, using batteries or directly charging or powering a device, light or phone.

The plug and play micro inverters are On Grid, They see the grid and can send power out to the grid if allowed.

Thanks now understand on and off grid. What does the comment "can send power out to the grid if allowed" mean?