My year with a battery - A year of savings.

Waywardmike

Screwdriva said:

EcoScruples said:

So please feel free to pick through and point out anything that's not corr3ct but the battery side isn't exactly going to pay for itself very quickly. Definatel3y would have went more solar and no battery had I known then what I know know.

Thanks for sharing! With Flux, we've experienced a ~45% net increase in PV export earnings without a battery, at an average tariff rate of 25.5p per kWh.

The recent energy price crisis is a bit of a double edged sword for you @Screwdriva?  You were looking at a 20 year ROI on your system before the crisis, but now presumably much less.  Kind of explains your obsession with ROI.

Of course everything else you buy is much more expensive which is far worse.

Screwdriva

Waywardmike said:

The recent energy price crisis is a bit of a double edged sword for you @Screwdriva?  You were looking at a 20 year ROI on your system before the crisis, but now presumably much less.  Kind of explains your obsession with ROI.

Of course everything else you buy is much more expensive which is far worse.

Actually, I always get the best "Green" purchase money can buy, regardless of ROI. It does feel great knowing something made well lasts longer than expected, all while paying for itself sooner than expected. 

pensionpawn

Waywardmike said:

michaels said:

Isn't your saving (from the battery system only) energy out of battery x rate you would have paid for that energy?

1459.9 x 32p = £467

Less any of that energy that might otherwise have heated hot water via the iBoost (worth say a saving of 11p per unit of gas water heating costs)

You might be able to improve on this using a TOU tariff over the winter and/or Octopus Flux over the summer.  Should also compare vs agile export with and without battery.

Exactly that... Which is what I wrote, 467.59? Although I had 4 months at 28p and 8 months at 35p a kWh. 

I wasn't sure how to calculate how much of that battery energy would have heated water, we're very low users of hot water it would appear, but It's offset by the iBoost savings which I didn't add.  It's safe to say I made/saved £1995.28+

If I go to flux or another TOU tariff I would have to opt out of 50% deemed export, I have that calculated for the previous year at £111 deemed export and ~£98 if I was on Octopus 15p a unit export.  Flux would probably be more and maybe exceed my deemed export, but isn't guaranteed whereas my deemed exports are for another 11 years.

I wouldn't bank on that. I had a Smets2 installed 2 years ago (not my idea) and over Easter an email arrived stating that I WILL be migrated off deemed to metered export within 6 months. 6 weeks later I was being paid for ~90% of my generation at 22.5p / 35.9p via Octopus Flux.

QrizB

pensionpawn said:

I wouldn't bank on that. I had a Smets2 installed 2 years ago (not my idea) and over Easter an email arrived stating that I WILL be migrated off deemed to metered export within 6 months. 6 weeks later I was being paid for ~90% of my generation at 22.5p / 35.9p via Octopus Flux.

Yes, the FIT terms & conditions state that deemed export should only be used where there is no export meter. As smart meters include an export register, metered export will probably catch up with us all eventually.

(I recall some of the forum regulars arguing vehemently that this was not the case, last time this came up.)

FWIW when my smart meter was installed I notified E.ON Next as my FIT supplier. They replied that I could switch to metered export if I wanted to, but that otherwise they'd leave me on deemed export.

Waywardmike

pensionpawn said:

I wouldn't bank on that. I had a Smets2 installed 2 years ago (not my idea) and over Easter an email arrived stating that I WILL be migrated off deemed to metered export within 6 months. 6 weeks later I was being paid for ~90% of my generation at 22.5p / 35.9p via Octopus Flux.

My FIT provider isn't the same as my energy supplier so hopefully they won't communicate with each other. I was with SSE and am currently being migrated to Ovo, which is a bit of a mess TBH, my last FIT payment was paid by cheque, which was a first.

Although if I do get moved to metered export, it will probably be the catalyst to getting another system installed on the remaining part of my roof if DNO allowed, then I'll get the best of both worlds, FIT and big exports.

EricMears

I don't think you can use a smart meter to record exports unless you have an 'export MPAN'.  And surely only you (or your import supplier ?)  can apply for that.  

pensionpawn

Waywardmike said:

pensionpawn said:

I wouldn't bank on that. I had a Smets2 installed 2 years ago (not my idea) and over Easter an email arrived stating that I WILL be migrated off deemed to metered export within 6 months. 6 weeks later I was being paid for ~90% of my generation at 22.5p / 35.9p via Octopus Flux.

My FIT provider isn't the same as my energy supplier so hopefully they won't communicate with each other. I was with SSE and am currently being migrated to Ovo, which is a bit of a mess TBH, my last FIT payment was paid by cheque, which was a first.

Although if I do get moved to metered export, it will probably be the catalyst to getting another system installed on the remaining part of my roof if DNO allowed, then I'll get the best of both worlds, FIT and big exports.

Neither was mine. We don't own the meters and have no control over them so I doubt there is anything to prevent your FiT provider applying for an export MPAN and migrating anyone with complient kit to metered export.

JKenH

QrizB said:

pensionpawn said:

I wouldn't bank on that. I had a Smets2 installed 2 years ago (not my idea) and over Easter an email arrived stating that I WILL be migrated off deemed to metered export within 6 months. 6 weeks later I was being paid for ~90% of my generation at 22.5p / 35.9p via Octopus Flux.

Yes, the FIT terms & conditions state that deemed export should only be used where there is no export meter. As smart meters include an export register, metered export will probably catch up with us all eventually.

(I recall some of the forum regulars arguing vehemently that this was not the case, last time this came up.)

FWIW when my smart meter was installed I notified E.ON Next as my FIT supplier. They replied that I could switch to metered export if I wanted to, but that otherwise they'd leave me on deemed export.

I received this as part of an email from my FiT provider a couple of months ago. It coincided with my move to Octopus Flux so doesn’t concern me but it may others: 

You will be moved over to smart export in the next 6 months. We'll contact you closer to the time to let you know when we're moving you over but there's nothing you need to do to switch over. If you have any questions, please email smartexport@goodenergy.co.uk.

1961Nick

Waywardmike said:

pensionpawn said:

I wouldn't bank on that. I had a Smets2 installed 2 years ago (not my idea) and over Easter an email arrived stating that I WILL be migrated off deemed to metered export within 6 months. 6 weeks later I was being paid for ~90% of my generation at 22.5p / 35.9p via Octopus Flux.

My FIT provider isn't the same as my energy supplier so hopefully they won't communicate with each other. I was with SSE and am currently being migrated to Ovo, which is a bit of a mess TBH, my last FIT payment was paid by cheque, which was a first.

Although if I do get moved to metered export, it will probably be the catalyst to getting another system installed on the remaining part of my roof if DNO allowed, then I'll get the best of both worlds, FIT and big exports.

I'm in the same position - Scottish/Octopus - so hopefully I'll get a few more years of deeming. Last year's export was only 89kWh & this year is running under that figure.

I guess as we get towards the end of the FIT scheme, deemed export will become redundant.

pensionpawn

1961Nick said:

Waywardmike said:

pensionpawn said:

I wouldn't bank on that. I had a Smets2 installed 2 years ago (not my idea) and over Easter an email arrived stating that I WILL be migrated off deemed to metered export within 6 months. 6 weeks later I was being paid for ~90% of my generation at 22.5p / 35.9p via Octopus Flux.

My FIT provider isn't the same as my energy supplier so hopefully they won't communicate with each other. I was with SSE and am currently being migrated to Ovo, which is a bit of a mess TBH, my last FIT payment was paid by cheque, which was a first.

Although if I do get moved to metered export, it will probably be the catalyst to getting another system installed on the remaining part of my roof if DNO allowed, then I'll get the best of both worlds, FIT and big exports.

I'm in the same position - Scottish/Octopus - so hopefully I'll get a few more years of deeming. Last year's export was only 89kWh & this year is running under that figure.

I guess as we get towards the end of the FIT scheme, deemed export will become redundant.

Anyone with panels and a Smets 2 meter should seriously consider binning deemed and migrating to metered, especially Octopus Flux. Since 21st May, 3.5 weeks, I've been paid £167 (just for metered export) compared to £30 deemed over the same period. Generation FiT was ~£143. Numbers are individual for everyone and of course we're almost at a solar max with perfect generation weather and winter will be a different story. However for some, it could mean a £0 energy bill pa!