4 kw solar system

[multi power]

What should it cost to install and what payments are available?
Going on a bungalow roof

 

[f0ster]

there are no more payments for new entrants, they stopped 1st april. some of the elec companies are paying you for export now tho.
as for cost of install, it depends on who is installing, if you are doing it your self a kit is just over £2000

 

[akaPABLO01]

You’ll need a smart meter so you can apply for SEG which will be a new export payment scheme when it’s issued. This payment will be back dated to commission date and contract with export licensee you choose. A fella told me he paid 9k for 3kW by some scummy git in January. Got upsold a power balancer too. Get some quotes and exercise them here for us to look over.

Use this site for installers near you
https://www.microgenerationcertification.org/consumers/installer-search/

You’ll need an MCS certified installer to claim SEG
https://assets.publishing.service.g...for_small-scale_low-carbon_generation_SEG.pdf

 

[multi power]

How much kw/hours will a 4 kw system generate in a year ?

 

[Exfarmer]

Roughly 1,000 Units per Kw installed. Depending on angle and direction

 

[akaPABLO01]

How much kw/hours will a 4 kw system generate in a year ?

Where you are if it’s

Direct south with 30° pitch 930 hours of sun

SE 881

SW 881

Times these hours by system size 881x4=
3,524kWh annually

 

[Exfarmer]

Where you are if it’s

Direct south with 30° pitch 930 hours of sun

SE 881

SW 881

Times these hours by system size 881x4=
3,524kWh annually

I believe this is the official figure you have to quote when selling, am I right?
My own experience is we are getting much better than this. It may be different in 20 years time though.

 

[davidroberts30]

How much kw/hours will a 4 kw system generate in a year ?

Think mine have averaged 3900kwh a year

 

[akaPABLO01]

I believe this is the official figure you have to quote when selling, am I right?
My own experience is we are getting much better than this. It may be different in 20 years time though.

Yeah it’s the official MCS sunshine hours. People can get up to 10/15% more but that’s the slap on the back you get from customer when it DOES produce more. Everyone is happy.

 

[Exfarmer]

Mine across the board are doing an average of 980 Kwh per Kw installed. But this does include a small amount of East West panels.
Those panels are still managing 880Kwh per Kw installed

 

[multi power]

So if I install a 4 kw system and use say 2000 units per year does that mean I won't have to pay an electric bill?

 

[Deutzdx3]

What could you run off a 4kw system? A small family home?

 

[davidroberts30]

So if I install a 4 kw system and use say 2000 units per year does that mean I won't have to pay an electric bill?

You will have a bill as your exporting at 4p and importing at 14

 

[davidroberts30]

What could you run off a 4kw system? A small family home?

Yes as long as you have timers on the main users

 

[multi power]

You will have a bill as your exporting at 4p and importing at 14

Do I have to import? Can't I use what I generate?

 

[davidroberts30]

Do I have to import? Can't I use what I generate?

Yes u can use it all but not at 11pm

 

[multi power]

Yes u can use it all but not at 11pm

So I would only really import when it's dark ? That is no problem

 

[e3120]

So I would only really import when it's dark ? That is no problem

Or cloudy or most days between Oct & March.

 

[Bloders]

So I would only really import when it's dark ? That is no problem

In reality ita not that simple.
I have a 4kw system on my house. This time of year its exporting a lot, whereas the darker half of the year it makes no where near enough to run the house.

I balance it a little with an electric heater in a north facing room and a towel rail both running off excess power. If you have a hot water tank (I dont) you can burn a lot more excess power heating water, though you will still be short of power at night and all winter