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July 5, 2022
Solved

Why is my Solis solar inverter drawing energy from the grid?

  • July 5, 2022
  • 52 replies
  • 28200 views

Hey everyone,

 

I need some help and advice.  My Solis Inverter still draws minimal energy from the grid even though my solar panels are generating enough energy for use and storage.  The problem is that this minimal amounts are costing me almost £1 a day, around £30 a month.

 

Is there anyone of fixing this issue? Solis says there is nothing that can be done at the moment but have raised a ticket that has not been allocated to anyone.  Would this be the same issue with all inverters?

 

Best answer by Jequinlan

Hi @Mbu1982 

 

Welcome and I hope below answers your question:

 

Yes the PV systems all draw (at times) an amount from the grid.

 

I have been monitoring mine for weeks and can confirm there are times there is :

 

A) a trickle from the grid, a cloud can drop PV suddenly and if charging a battery the grid may step up while the battery charge is adjusted

B) a trickle TO the grid, this happens most when PV panels suddenly gain more sun, or when battery is charged.

C) when the battery falls to 4% on my system the trickle to the grid is used to maintain the management of the PV system.

 

Pretty sure the net benefit of solar far exceeds this gain/loss scenario but it appears to be just the way it is.

52 replies

Tim_OVO
OVO Staff
OVO Forum Legend
July 5, 2022

Good question this, @Mbu1982 - great to see your green tech in the home: solar and storage!

 

We do have forum members with solar panels and I’d like to see if anyone has any suggestions to check for this. 

 

@EverythingNeedsAUserName and @PeterR1947 are often happy to have a look at these solar ones. I hope they don’t mind me tagging them in this one. 

 

There’s also a similar thread from @dnshorto here:

 

 

My trump cards are the new-to-solar @Jequinlan and the smart home guru @ArundaleP. As a group if we can’t advise you of a next step, I don’t know who can!

Carbon neutral - we need a community to get there! My green tech: Aclara SGM 1411-B smart meter, Chameleon IHD6
Jequinlan
Rank 10
JequinlanSolved
Rank 10
July 5, 2022

Hi @Mbu1982 

 

Welcome and I hope below answers your question:

 

Yes the PV systems all draw (at times) an amount from the grid.

 

I have been monitoring mine for weeks and can confirm there are times there is :

 

A) a trickle from the grid, a cloud can drop PV suddenly and if charging a battery the grid may step up while the battery charge is adjusted

B) a trickle TO the grid, this happens most when PV panels suddenly gain more sun, or when battery is charged.

C) when the battery falls to 4% on my system the trickle to the grid is used to maintain the management of the PV system.

 

Pretty sure the net benefit of solar far exceeds this gain/loss scenario but it appears to be just the way it is.

John Quinlan
Jequinlan
Rank 10
Rank 10
July 5, 2022

Here is my current state and a small flow is going TO the grid...

John Quinlan
PeterR1947
Newcomer
Newcomer
July 5, 2022

Interesting!  I don’t have a battery as such although my Leaf is connected in V2G & V2H mode.  Like any other permanently connected device the inverter takes a certain amount of electricity whether on or off, however, when I’m generating more than the house is using, I take 0kW from the grid.  I would make a big noise with Solis, it doesn’t make sense at all.

Peter

PeterR
Mbu1982Author
Rank 4
July 6, 2022

Thanks for the responses @Jequinlan @Tim_OVO @PeterR1947 I tend to agree with Peter, in this day an age the switch between should be instant.  When I am generating enough energy or have a battery over 20% I do not expect to have any energy to be drawn from the grid.  Does this happen with all inverters?

Newb
davericho
Newcomer
Newcomer
August 18, 2022

Wow that doesn't sound right I'm no expert far from it....... I am in the process of ordering battery installation my fist choice inverter was the Solis 5g.

With so many throughout the world you would think it would be picked up by now sounds like a fault on yours.

Be interested to here what Solis say about the ticket they raised @Mbu1982.

Have you used the new tool below live view every 10sec ..... log into OVO it's at the very bottom of the first page

 

NewB.......Always amazed with simple solutions
Tim_OVO
OVO Staff
OVO Forum Legend
August 19, 2022

@davericho can you let us know which battery system you’re going for?

 

@Mbu1982 are you aware of this new 10 second portal view?

Carbon neutral - we need a community to get there! My green tech: Aclara SGM 1411-B smart meter, Chameleon IHD6
Mbu1982Author
Rank 4
August 19, 2022

Thanks @Tim_OVO @davericho No response or answer yet from the ticket raised.  It makes no sense to me. Even on the days where the battery was at 60% when the sun rose and full charged by 11am. We still used enough electricity to be charged just £0.89 Plus the standing charge. As technology is seem less these days it makes no sense. Will let you know when I hear back from Solis.

Newb
davericho
Newcomer
Newcomer
August 19, 2022

Thanks Mbu1982 really would appreciate your Solis update.

Clutching at straws but have tried disconnecting everything to see if you draw power you may have done this, forgive me if I missed you had.

 

NewB.......Always amazed with simple solutions
davericho
Newcomer
Newcomer
August 23, 2022

@Tim_OVO 

Hi Tim I will be installing PylonTech US5000 4.8kWh along with a Solis 5g inverter 

Not yet installed 

 

NewB.......Always amazed with simple solutions