Solar PV battery options

Just the controller and neither the inverter or battery. I suspect it will be locked down to just communicate with their own inverter or is there can/rs485 between the inverter and controller.

but for a hybrid inverter it only knows what it is producing and not what the battery connected to it is doing as it only sees it as a whole

Yes. There is nothing that myenergi can do about that though.

My third party inverter is not a hybrid inverter, it's a dedicated battery inverter. So then the clamp does the trick.

It would be the only USP of the libbi over any third party hybrid inverter 😁

I'd say they will sell. Plenty of people buy just to greenwash or genuinely want to do the right thing, but have no idea about and no interest in pay back periods or any other financial concerns. Fair play to them. Unfortunately, I can't afford that same attitude 😂

Even if you managed to go over the 2000kWh allowable night rate on the bi-monthly bill the rate "only" goes to 0.1481 for the excess units.

Even that is competitive compared to most plans you could sign up to today.

I think the fact that they have a full ecosystem of products is key.

They also already have relationships with almost every wholesaler; and they are only providing their inverters in two SKU’s 3.6 and 5 kWh. So if they can ramp up manufacturing and keep them in stock I think they could do very well.

need to see what the price is going to be; I expect they won’t be a budget product. Prob in line with Huawei..

the only thing that are missing now is optimisers.

RIP the days of single digits night rate . Even night rate in the teens is tricky to find.

back on thread

I reckon you have hit the nail on the head there @idc

€4k for the cabinet though including just one 5kWh battery. And that's before Myenergi take their cut. And their control unit. And install costs. Extraordinarily expensive 😂

The trick is to sell it and then buy it back for a much lower price 😁

If the numbers keep going as they seem to be trending per unit and it being likely that we will all be forced into smart meters with peak rate tariffs batteries will most likely become essential I believe.

Hopefully the smart tariffs will become a bit more day/night friendly allowing greater charge times but with day unit rates likely heading toward € 0.75-1.00 before the summer, payback on shelf bought batteries will make them financially viable if not essential in a system regardless of fit.

It’s 1,350 units to reach the €200 but once there each unit is worth 7cent or there about making it substantially less than a night time unit will likely cost. I’m lucky I got the ev rate too but once we come out of that in a years time it could be Armageddon.

Im shelving solar for the moment due to cost and potential of moving house so dont want to plow a lot into it that wont really affect the overall price. Is there any reason that just getting say a 5kw battery would be a bad idea? Specifically id be looking to fill up on the night rate smart tariff and also intend on using for an EV? Basically is a battery worth it without an Solar?

+1 to Unkel above. But is a good Q and one I mulled over myself. But don’t do it, not for now anyway.

Get the EV first and you’ll save a grand a year on petrol (even when you factor in cost of electricity on ~15kms milage a year). With an EV, you’ll move to a D/N meter or s smart meter on some EV tariff to get cheaper power at times. So by load-shifting other stuff in the house (washing machine, dishwasher..) you’ll save on energy costs. As in run devices at that night-rate. Few threads on good D/N or smart tariffs here. If you have an EV already, a battery can't save you money as you should charge the EV on cheapest time slot. Our EV uses as much power as our house (which is still way cheaper than petrol).

As to why not do it (bar install cost and moving to the new house), a house battery shouldn’t charge a much larger EV car battery (bar the rare times it needs a boost during expensive day rate). EV batteries are at least 30kWh and head into the 80kWh even now. House battery would be a ‘pimple’ of that. You’ve electric losses on each battery, so are paying X% more for the power for a battery to fill a battery. Plus it’s wear+tear on house battery.

So ye, it could be done. You’ll only save from €200 a year upwards (depending on how high the day rate tariffs move to). And you’ll get better savings elsewhere for the cost. So consider it after the other stuff like getting solar, EV, insulation (in no particular order)….

Btw, we’re moving house at some point and I fully intend to either sell the solar for cost we paid and get some profit. 10k is peanuts on the cost of a mortgage, for energy independence. House would sell in a flash. Or we’ll also have a sale price without it and I’ll take it down. Our installer will move from here to the new place. But it might cost me 2k (‘finger in the air’ with current labour costs) to do it – but that’s the max we’d lose. For us it was still worthwhile as we’ve no solid plans to move, but will at some point. If our installer is mad money to move it, I’ll get a sparks to turn it off and roofer to take it off. Store it for the move and do same on the other end. 

Wow. Amazing stat. That's some benchmark and shows what's possible by keep making changes and investing time. You've done a lot of diy so your time is keeping the costs down.

Brill for likes of me who is new to it all to see what's possible

On your battery size, do you mean it was 20kWh and is now 33kWh?

Bit of both. My home battery is 20kWh and I have a EV conversion in my drive that I can plug in for V2H that is about 13kWh