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Get references and confirm with references if all good.
If you not comfortable use an escrow account / lawyers trust account.
You don't want to pay 50%+30% for some solar panels and be scammed - happened to me.
 

Lik hoohloc said get at least two more quotes. 

But those prices seem fair. I diy'd my system(same inverter and panels)  but 10 panels for the same price including some new tools :) which I reckon as an extra investment hehe

Edited by JoeSlow

12 hours ago, Nexuss said:

I would recommend you get some Pylontech batteries instead of the Revov second life cells. 

Also a big fan of pylontech. 
I wasn’t aware that installers charge so much for installations. Kinda glad I went the diy route. 
I would ask for a breakdown of the switches wiring and consumables cause that is a vague description. 
Fuses should be specified And the same goes for switches. Big difference in fong kong breakers and cbi. 
Solar mounting brackets ? So is that for galvanised steel or aluminium brackets. (Might make a difference in maintenance 10 years down the line)

This is a long term commitment and costs a lot.Make sure you get what you want and not what someone else wants to install.

Just an opinion 

Another thing. 
I would not pay 50% upfront. It puts you in a high risk situation. 
Pay for the goods on delivery and for the installation once you have your COC in hand.  
Zero risk for  being taken for a ride. 
It will motivate the installer to get the job done.

My opinion 
 

I see your point but there has to be a way of having a shared risk. 
There is more than one example on this forum where deposits were paid and the games that’s played when it comes to delivery. Even a Carte Blanche episode about it. 

yes, that is problem, a web designer got a 50% upfront deposit from me and at mid point, talked me into paying him the second 50% ( i trusted him ) and now he tells me that he will get to finishing the site when he has time, so "buyer beware""

Could I ask if the following has been done in order to ensure the solution matches the requirements.

1. Has a device that measures your power and logs it been installed and running for at least a week or two to ensure the solution offered meets your needs. (very important)

2. Has a document been provided detailing all aspects of the install, with roi, expected power generation etc. something comprehensive along the lines of 20 odd pages.

3. Drone based 3d rendering of the property to be incorporated into the above document to show visually the expected layout with equipment placement and allowing for a shading analysis/simulation.

Have load reduction measures been discussed, aka solar geyser, heat pump, gas stove etc.(very important)

A quote is one thing, but does the solution meet the requirements, and have the measures to reduce the load been discussed and/or implemented and have the residual load requirements been measured.

I apologize but one page invoices do not represent a solution in my view.

Consider escrow with phased payments on goal completion, should ease the payment issue. Using pylontechs instead is good advise. Authorized installers will ensure warranties are in place. installers often get better pricing due to volumes and relationships with suppliers, you may not get better through retail channels. before purchasing ensure your can get an installer who will fit already purchased equipment.

Edited by Nitrious

The COC should cover both the solar installation and changes to your DB board.  Have you discussed how he will split your DB board?  What items will run off the inverter and batteries and which ones from the grid.  Typically lights, fridge freezer, tv, decoders, wifi should be linked to batteries, if on timers/geyserwise tipe applications you could include geyser and pool pump.  If you change your mind later it becomes expensive.  Check if he has include earth spikes for lightning protection. 

  • 2 weeks later...

I have Revovs. They are degrading quite quickly. Ok... Maybe I got a Monday battery, and it's not the problems you have but what you do about the problems. Revov are not unconcerned about my batteries.

One thing about them is that most inverters are not pre-programmed to deal with these batteries and their usual method is to not have comms between the BMS and the inverter. In my experience this was not stable. If you shell out for their RCU comms unit then the BMS controls the inverter.

I would recommend that you ask the installer if they have other sites running this combination without hassle. Then try to speak to those owners.

Any inverter will know how to deal with pylontechs for example. You can't say the same for Revov. 

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