Are batteries worth it for me? 1000kw per month usage

markin

 265W panels,  X 14 = 3.7 kwh Peak.

You likely need a MSC cert and also proof you informed the DNO, Is the a generation meter that could be up in the loft? If not get the smart meter, Then you can apply for SEG payments from any supplier.

smart_taunton_bloke

markin said:

 265W panels,  X 14 = 3.7 kwh Peak.

You likely need a MSC cert and also proof you informed the DNO, Is the a generation meter that could be up in the loft? If not get the smart meter, Then you can apply for SEG payments from any supplier.

I do have an MSC cert, but not sure about the DNO - what is that?

There is a small white meter that was added - it's next to the main electric meter. 

Krakkkers

265w per panel. 265x14 = 3710w

ABrass

smart_taunton_bloke said:

markin said:

 265W panels,  X 14 = 3.7 kwh Peak.

You likely need a MSC cert and also proof you informed the DNO, Is the a generation meter that could be up in the loft? If not get the smart meter, Then you can apply for SEG payments from any supplier.

I do have an MSC cert, but not sure about the DNO - what is that?

There is a small white meter that was added - it's next to the main electric meter. 

That'll probably be your export meter.

The DNO is the Network operator for your area who determines what is allowed to be installed or not. They issue your Micro Generation Systems (MCS) certificate.

If you've got MCS signoff then you should be able to get the Solar Export Guarantee (SEG) for any exported power. With Octopus it's currently 15p, which is pretty good.

Magnitio

smart_taunton_bloke said:

Looking for some advice about batteries. Hope someone can help?

We use about 1000kw a month. No gas. 

In March we used:

350kw daytime at 51pence - cost £178.50
625kw nighttime at 12.3pence - cost £76.80

If I got batteries could I have moved the daytime to nighttime, are these figures correct? 

Cost daytime - £178.50
Moving that to nighttime 350 x 12.3 pence £43.05
Saving - £178.50 - £43.05 = £135.45

We also have 14 solar panels that would help top up during the day. 

I'm looking at a Lux inverter and battery system that would £5,300 installed - 7.2kw. 

Am I thinking along the right lines here or am I missing something?!

Thank you

Not sure that any of the subsequent comments mentioned this, but you need to take into account the losses from charging and discharging. If you assume round-trip losses of 15%, then you would need 411kWh moved to the night rate to provide 350kWh during the day.

markin

I've seen discussion of octopus wanting to see an email directly from the dno giving approval, And I thought the installer sorted the mcs from a separate org.

Petriix

ABrass said:

smart_taunton_bloke said:

markin said:

 265W panels,  X 14 = 3.7 kwh Peak.

You likely need a MSC cert and also proof you informed the DNO, Is the a generation meter that could be up in the loft? If not get the smart meter, Then you can apply for SEG payments from any supplier.

I do have an MSC cert, but not sure about the DNO - what is that?

There is a small white meter that was added - it's next to the main electric meter. 

That'll probably be your export meter.

The DNO is the Network operator for your area who determines what is allowed to be installed or not. They issue your Micro Generation Systems (MCS) certificate.

If you've got MCS signoff then you should be able to get the Solar Export Guarantee (SEG) for any exported power. With Octopus it's currently 15p, which is pretty good.

It's almost certainly a generation meter. You really need an export meter urgently. You've been exporting for free for 3 years. At current SEG rates that's ~ £300-400 per year you're giving away. 

smart_taunton_bloke

thankABrass said:

smart_taunton_bloke said:

markin said:

 265W panels,  X 14 = 3.7 kwh Peak.

You likely need a MSC cert and also proof you informed the DNO, Is the a generation meter that could be up in the loft? If not get the smart meter, Then you can apply for SEG payments from any supplier.

I do have an MSC cert, but not sure about the DNO - what is that?

There is a small white meter that was added - it's next to the main electric meter. 

That'll probably be your export meter.

The DNO is the Network operator for your area who determines what is allowed to be installed or not. They issue your Micro Generation Systems (MCS) certificate.

If you've got MCS signoff then you should be able to get the Solar Export Guarantee (SEG) for any exported power. With Octopus it's currently 15p, which is pretty good.

I have this on the MSC Cert: 

DNO Notification Compliance:
To Be Notified Post Connection And Commissioning

 

smart_taunton_bloke

Petriix said:

It's almost certainly a generation meter. You really need an export meter urgently. You've been exporting for free for 3 years. At current SEG rates that's ~ £300-400 per year you're giving away. 

Yes - it looks like I need to sort one ASAP. 

smart_taunton_bloke

Magnitio said:

Not sure that any of the subsequent comments mentioned this, but you need to take into account the losses from charging and discharging. If you assume round-trip losses of 15%, then you would need 411kWh moved to the night rate to provide 350kWh during the day.

So would a 9kw battery cover me (nearly) in the winter months?