Cost of a battery add on to pv?

Skintsaver

I have a 2.5kw split over 2 roofs 4 and 2 panels. I'm using around 25% of what I generate. I have a inverter which you can't install batteries too.

I have 2 options replace the inverter and install batteries to that in the loft, which I don't like the idea off. 

Or install another inverter with battery batteries under my stairs, I this will cause some losses but I think the batteries will prefer a environment with more consistent temperature that a loft will be.

How much would the just cost and can I expect to pay Somone to install? 

QrizB

Skintsaver said:

I have a 2.5kw split over 2 roofs 4 and 2 panels. I'm using around 25% of what I generate. I have a inverter which you can't install batteries too.

I have 2 options replace the inverter and install batteries to that in the loft, which I don't like the idea off. 

Or install another inverter with battery batteries under my stairs, I this will cause some losses but I think the batteries will prefer a environment with more consistent temperature that a loft will be.

How much would the just cost and can I expect to pay Somone to install? 

You will have to pay for installation, unless you're a qualified electrician and happy to do all the admin yourself.

There are example systems here, look under the "AC battery storage" menu:
https://homeenergygroup.co.uk

The cheapest seems to be £3095, for a Lux inverter plus one Uhome 2.4kWh battery. Price includes installation.

DougMLancs

An AC-coupled battery will need squaring with the DNO I believe?

1961Nick

I’d suggest a Pylontech US5000 for around £1800 & a Sofar ME3000 around £1100. Another £300 should cover switchgear & fitting.

QrizB

DougMLancs said:

An AC-coupled battery will need squaring with the DNO I believe?

Yes, that's part of the admin.

Skintsaver

3k is quite steep, if I stopped all import then I'd save £600 approx. Maybe I'll wait until prices dip more 

Screwdriva

Skintsaver said:

3k is quite steep, if I stopped all import then I'd save £600 approx. Maybe I'll wait until prices dip more 

Have you considered switching to Octopus Flux and selling your excess solar instead of storing it? You don't need a battery (contrary to popular belief) and the earnings from export weaken the financial case for storage even further.