How to find better feed in (export) tariff for excess electricity ?

OmegaA

Hi, everyone,
I installed solar panels that will generate 200-250% of my annual consumption and Tesla PowerWall 2 battery. I am on EDF dual fuel contract Easy Online 3 Year Fix Sep24 that I signed up in September 21, my Electricity unit rate: 20.33p per kWh, Daily standing charge: 24.11p per day. My export tariff is about 4 or 5 p/kWh. I consume about 4700 kWh a year of electricity, solar generation is estimated 10 000 kWh a year 
I checked around and one of the cheapest daily rate now is with Octopus that is 47.95 p per kWh with daily Standing Charge is 30.3 p/day, so about £0.5k more expensive than my current rate. Is there a feed in tariff that can effectively offset this increase in my rate to encourage me to move?
Is there a better feeding tariff that I could take instead of my current EDF one?
Is there a good feed in tariff comparison site? I takes a while to go through each supplier, especially because many do not publish conditions that you can get the best price if you switch at least electricity to them?

Thank you

[Deleted User]

Save yourself some time and look at Octopus Flux. My panels have generated an export income of £52 in the past 28 days (not a good solar period!).

OmegaA

Dolor said:

Save yourself some time and look at Octopus Flux. My panels have generated an export income of £52 in the past 28 days (not a good solar period!).

Thank you, I just spoke to Octopus right now.
We are in the best part of the year - if you are annually generating close to 100% of what you consume (what often solar panel installers recommend), then you will be drawing much more energy than generating in the winter, so the income of £52 may become negative
My current electricity tariff is about £500/year cheaper than Octopus Flux if I did not have the solar panels... The question if moving to Octopus will offset the savings, hard to calculate, but I want to get some rough estimates - at the moment, it looks like it will be more expensive 

OmegaA

I made crude estimations

I can buy energy at Flux period for 18.18 p kWh, sell at peak time for 31.41 p kWh. Currently my battery is about 5-39% full when flux time finishes, so I can charge only the remaining capacity. I probably that damp it at the higher price @ 16:00-19:00, then I will be buying at 30.3 p/kWh from 19:00 as there be little solar generation. Yes, I will sell excessive energy for 19.3p kWh most of the day during the summer. In winter though sun goes down much faster, so I will generate about 1/4 of the summer time, so I will have to import 5 kWh daily…

It looks like changing the tariff is breaking even in my case…

Alnat1

You don't have totally empty the batteries 4-7pm, I leave enough in to see me through to the cheaper 2am slot. Then I set the batteries to charge, often only to 20%, enough until the sun is up and I'm making enough to run the house load. In winter, or if a dark day is forecast in summer, I can totally fill the batteries 2-5am.

[Deleted User]

Alnat1 said:

You don't have totally empty the batteries 4-7pm, I leave enough in to see me through to the cheaper 2am slot. Then I set the batteries to charge, often only to 20%, enough until the sun is up and I'm making enough to run the house load. In winter, or if a dark day is forecast in summer, I can totally fill the batteries 2-5am.

I could force my PW2 to discharge in the peak period but I choose not to do so. When solar output falls away in October, I will probably switch back to Go for the lower import rates. Without an EV, I would probably go for E7 and Agile Outgoing.

DougMLancs

You’re one of the lucky ones who fixed just at the right time! Our church is in the same position so we’re getting panels fitted ready to ease the shock! Flux has been a game changer for me- I’ve earned £225 from exports since the beginning of June. If the export MPAN had been quicker after installation it would’ve been £350ish as May was exceptionally good.

Niv

OmegaA said:

Dolor said:

Save yourself some time and look at Octopus Flux. My panels have generated an export income of £52 in the past 28 days (not a good solar period!).

Thank you, I just spoke to Octopus right now.
We are in the best part of the year - if you are annually generating close to 100% of what you consume (what often solar panel installers recommend), then you will be drawing much more energy than generating in the winter, so the income of £52 may become negative
My current electricity tariff is about £500/year cheaper than Octopus Flux if I did not have the solar panels... The question if moving to Octopus will offset the savings, hard to calculate, but I want to get some rough estimates - at the moment, it looks like it will be more expensive 

We are definitely not this year, May and June were way better than July and it would be a miracle if August beats May or June too.

OmegaA

Alnat1 said:

You don't have totally empty the batteries 4-7pm, I leave enough in to see me through to the cheaper 2am slot. Then I set the batteries to charge, often only to 20%, enough until the sun is up and I'm making enough to run the house load. In winter, or if a dark day is forecast in summer, I can totally fill the batteries 2-5am.

Do you manually change the settings on a daily basis? There is a risk you will miss it by forgetting about it... I did not figure out yet how to set charge-discharge on PW2 automatically at various times of the day, only can see Self-Powered and Time-Bases Control (but Time-Based Control is useless for me because my purchase rate is the same any time of the day, so is my sell rate, though it is only 5.6 p/kWh)