Solar Panel & Battery Quote Advice

QrizB

Screwdriva said:

I believe the latest quote has been deliberately inflated vs the original.

Seems that way, yes.

McKnze21 said:

So apparently my roof can accommodate up to 28 panels.

Your previous quotes increased by £1200 when adding 6 panels. So, ignoring everything else, that's £200 per panel.

Taking the £13000 20-panel quote and adding another 8 panels would be £15600. Quoting £20k makes no sense.

Screwdriva

debitcardmayhem said:

The all in one came out in 2024 I believe, I remember it came out about 6-9 months after I had my system installed Dec 23.

New AIO will be launched in early October.  Built in inverter, six string inputs and optimizer compatibility. Designed to dethrone the PW3 (yeah right!) 

debitcardmayhem

Screwdriva said:

debitcardmayhem said:

The all in one came out in 2024 I believe, I remember it came out about 6-9 months after I had my system installed Dec 23.

New AIO will be launched in early October.  Six String inputs and optimizer compatibility. 

I’ll have to ask my neighbours if I can use their roof too

McKnze21

I believe going over 20 panels meant it was another days labour on top. 

So I am back to this one for affordability…

£13,000
Solar Panels: 20x Eurener Nexa 475w All Black TopCon Mono
Inverter: G3 GivEnergy 10kW hybrid
Battery: 3x GivEnergy 3.4kWh LiFePO4 HV Stackable
Mounting: Renusol pitched roof mounting system

Installation, Bird Protection, Scaffolding, DNO all included.

However, they have suggested they have a would do the 500w bifacial panels instead for same price. 

QrizB

If that's what you can afford, it's a decent system. Especially with the 500W panels.

Adjusting for inflation, that's about the same amount that I paid for my 2.7kWp rooftop installation (no battery) back in 2012!

You're getting 4x as much panel plus a 10kWh battery.

Screwdriva

McKnze21 said:

I believe going over 20 panels meant it was another days labour on top. 

So I am back to this one for affordability…

£13,000
Solar Panels: 20x Eurener Nexa 475w All Black TopCon Mono
Inverter: G3 GivEnergy 10kW hybrid
Battery: 3x GivEnergy 3.4kWh LiFePO4 HV Stackable
Mounting: Renusol pitched roof mounting system

Installation, Bird Protection, Scaffolding, DNO all included.

However, they have suggested they have a would do the 500w bifacial panels instead for same price. 

The more I hear this installer's rationale, the more worried I get. On a simple roof like yours 26 panels in a day would be easy for any installer to do.

The capability of the proposed system is not comparable to the GivEnergy All in One Gen 2 or the Powerwall 3, which really should be offered at the £13K price point (with 20 panels). Add £1.5K for the 6 additional panels, which are the maximum the PW3 will be able to accept. 

I would insist on 26 X 500W Panels and the PW3 and offer them £15.5K as a maximum. Or £15K for the All in One, subject to DNO approval. 

I know the pricing for these components like the back of my hand and the numbers suggested above are very good for any honest installer. If they reject your offer, don't despair and continue the search is my honest advice.

McKnze21

Screwdriva said:

McKnze21 said:

I believe going over 20 panels meant it was another days labour on top. 

So I am back to this one for affordability…

£13,000
Solar Panels: 20x Eurener Nexa 475w All Black TopCon Mono
Inverter: G3 GivEnergy 10kW hybrid
Battery: 3x GivEnergy 3.4kWh LiFePO4 HV Stackable
Mounting: Renusol pitched roof mounting system

Installation, Bird Protection, Scaffolding, DNO all included.

However, they have suggested they have a would do the 500w bifacial panels instead for same price. 

The more I hear this installer's rationale, the more worried I get. 

The capability of the proposed system is not comparable to the GivEnergy All in One Gen 2 or the Powerwall 3, which really should be offered at the £13K price point (with 20 panels). Add £1.5K for the 6 additional panels, which are the maximum the PW3 will be able to accept. 

I would insist on 26 X 500W Panels and the PW3 and offer them £15.5K as a maximum. Or £15K for the All in One, subject to DNO approval. 

I know the pricing for these components like the back of my hand and the numbers suggested above are very good for any honest installer. If they reject your offer, don't despair and continue the search is my honest advice.

OK thanks!

Can I ask the reasoning for the Tesla PW3 or is the Giv Energy all in one 2 over the battery/inverter in the proposal above? How do they differ in terms of price/spec?

Also, would you say 20 panels would still be suffice? Even though 26 would of course be better?

Thanks for the advice!!

Martyn1981

QrizB said:

If that's what you can afford, it's a decent system. Especially with the 500W panels.

Adjusting for inflation, that's about the same amount that I paid for my 2.7kWp rooftop installation (no battery) back in 2012!

You're getting 4x as much panel plus a 10kWh battery.

2012 ...... 2012, you are so lucky   

My 2kWp in 2012 was ~£4k. But my 3.58kWp in mid 2011 was ~£12k.

You youngsters don't know how lucky you are.   

debitcardmayhem

McKnze21 said:

Screwdriva said:

McKnze21 said:

I believe going over 20 panels meant it was another days labour on top. 

So I am back to this one for affordability…

£13,000
Solar Panels: 20x Eurener Nexa 475w All Black TopCon Mono
Inverter: G3 GivEnergy 10kW hybrid
Battery: 3x GivEnergy 3.4kWh LiFePO4 HV Stackable
Mounting: Renusol pitched roof mounting system

Installation, Bird Protection, Scaffolding, DNO all included.

However, they have suggested they have a would do the 500w bifacial panels instead for same price. 

The more I hear this installer's rationale, the more worried I get. 

The capability of the proposed system is not comparable to the GivEnergy All in One Gen 2 or the Powerwall 3, which really should be offered at the £13K price point (with 20 panels). Add £1.5K for the 6 additional panels, which are the maximum the PW3 will be able to accept. 

I would insist on 26 X 500W Panels and the PW3 and offer them £15.5K as a maximum. Or £15K for the All in One, subject to DNO approval. 

I know the pricing for these components like the back of my hand and the numbers suggested above are very good for any honest installer. If they reject your offer, don't despair and continue the search is my honest advice.

OK thanks!

Can I ask the reasoning for the Tesla PW3 or is the Giv Energy all in one 2 over the battery/inverter in the proposal above? How do they differ in terms of price/spec?

Also, would you say 20 panels would still be suffice? Even though 26 would of course be better?

Thanks for the advice!!

I have Givenergy kit, and generally it has been good, but I would probably go for Powerwall if I was just starting out. It appears that GE are having problems with support looking at trustpilot, and I am waiting for a reply to my support ticket, just a heads up. I waited for weeks for a more serious problem to be resolved earlier this year, and even my installer was getting nowhere , it wasn’t a problem which cost me financially but it could be a sign of their support being overwhelmed.

Screwdriva

McKnze21 said:

Can I ask the reasoning for the Tesla PW3 or is the Giv Energy all in one 2 over the battery/inverter in the proposal above? How do they differ in terms of price/spec?

Also, would you say 20 panels would still be suffice? Even though 26 would of course be better?

Thanks for the advice!!

Ofcourse. We're all here to help.

26 is the max number of 500W panels the PW3 can take. I would start with 22 panels as a minimum paired to the PW3 if I were you. This is what the installer will use to apply for G99 and use 11.04kWh as the system export peak requested allowance. In theory, the more system peak generation, the more the DNO should allocate to the homeowner, but I find that the unwritten rule at most DNOs is "the more the peak system generation, the less the DNO will de-allocate". Make sure your installer agrees to appeal the decision with the DNO via phone call with you on the call as part of your offer to them, before paying them. 

Once the application has been submitted, your DNO will come back to you with your actual export allowance. I expect it will be unlikely that you will be allotted the full 11kWh, and instead will land somewhere between 5-8kWh. This means you/ your installer will need to reduce the # of panels (from 22) proportionately, thereby reducing your cost. (I haven't seen a full 11kWh allocation from any DNO across the UK in over two months). 

GivEnergy has always been the budget option to Tesla. The aftersales support is vastly inferior (Tesla has a whole unit replacement policy incase of a fault - 10 years is a long time), the software isn't as good, the cold weather performance and outdoor weather durability are not in the same league and Tesla has a safety record that established the bar for others to follow. If I couldn't get a Tesla for some reason, I'd go for an AIO but never the other way around.  Hope this helps?