Battery - to take advantage of 2am to 5am cheap rate electricity - v2

Thinking about it, I wouldn’t probably go DIY route so would want something I could get signed off by my spark. I’m on around 17 cent night and 34 cent day, so comparing savings to 34 cent rather than 41 makes it harder again to see an immediate return. Hopefully with car battery supply not as constrained as it was we will see reduced prices in future and it might become a no brainer

Never heard of the Gobel pre built battery. Where did you source that?

Good to be prudent. Seems unwise to base decisions on investments of several thousand on the situation that applies now. And yes the feed in tariffs are far higher than any of us expected. Who knows what is to come

That said, what is near certain is that we will be offered flexible rates, like they have in countries a bit ahead of us like the USA, the UK, the Netherlands, etc. Where you know the rates for the coming day for each half our slot. Rates can then easily vary between -€1 and +1€ per kWh and to make matters even more confusing, you could be paid for using electricity or you could be penalised for supplying electricity. Bring it on 😁 One day you could be paid €100 for storing 100kWh into your battery, cars, hot water and the next day you could be paid €50 for dumping 50kWh that you stored in your battery into the grid

Tesla megapacks come standard with built in software to maximise profits in importing and exporting, given a set of parameters the owner can set. But these cost a few million each, so aren't aimed at consumers 😁

In the UK and the Netherlands, there are already companies that provide the hardware and software to do the same job for people who have solar and / or battery and / or EVs. Typically they provide everything for free, but take a cut (like 30%) of the profits. Not a bad deal. But I'd like to be in control myself. It's a game, why would I let someone else play? 😁

Is the expedited shipping hand carrying it via air from China to your house :)

What else would be need to get this up and running - inverter? Also does it need to be located near to the circuit breaker in the house?

Yes a hybrid inverter if adding solar with it or if just using the battery for night cheap charging then a storage inverter like the me3000. I see an me3000 new selling for 700 on adverts.ie at the minute.

You would need power cable and ethernet from your circuit breaker to where your storage inverter is

Likely charged Irish vat at 23% when that arrives in the country?

I've just started a 2 year contract with Pinergy with the 5c night rate. This is a fixed discount percentage (90% discount) based on the full flexible rate of about 50c

So let's take a couple of scenarios:

1. flexible rate doubles from 50c to 100c / kWh (extremely unlikely and pretty much worst case scenario) => my 5c rate goes up to 10c
2. flexible rate gets 40% discount from 50c to 30c (possible, even likely but just about best case scenario) => my 5c rate goes down to 3c

Just a quick question, looking at the some basic back of the envelope economics of a solar setup for an A2 new build that has no solar currently.

Please excuse me if I am way off.

If I get a system like this - 12.5K in panels, a 6K hybrid inverter and a 14Kw Battery.

My usage is 5000Kw PA, the pylon calc say 9500Kw produced per annum.

The panels will supply my daytime usage with any excess going to the grid at 20 cent per Kw.

I'm guessing that average daytime usage will be 4Kw and night time 10Kw. The excess being 0kw to 40ish kw per day.

I understand that this changes throughout year.

So assuming I run the battery down to 25% and recharge every night.

I will pay €.08 x 10 x 365 = €292 + €240 standing = €532

I will sell 9500kw less (4kw x 365) 1460Kw =  ≈ 8000 Kw @ €0.20 = €1600.

So the setup would yield about €1000 per year?

Wouldn't there be lots of clipping in the summer with that setup?