Hello dear members,
We are planning to install a photovoltaic system and currently have two offers shortlisted.
We have a newly built house (2020) with a hip roof and want to cover the south/west and east sides.
Approximately 7.5 kWp can fit on our roof, and we are considering a 10 kWh (10 kWh) battery storage.
One offer includes Sharp modules and an Ecoflow Power Ocean Kit (inverter with battery), and the other includes Axsun modules, a Fronius inverter, and the new Fronius Reserva battery.
Since the second offer is almost 3000 euros more expensive, we are leaning towards the first one.
We have only read positive things about the Ecoflow storage so far. However, it has only been on the market for a short time. Fronius has been around much longer and is reputedly very reliable.
We wanted to ask here if anyone has the Ecoflow system and how satisfied you are with it?
We are planning to install a photovoltaic system and currently have two offers shortlisted.
We have a newly built house (2020) with a hip roof and want to cover the south/west and east sides.
Approximately 7.5 kWp can fit on our roof, and we are considering a 10 kWh (10 kWh) battery storage.
One offer includes Sharp modules and an Ecoflow Power Ocean Kit (inverter with battery), and the other includes Axsun modules, a Fronius inverter, and the new Fronius Reserva battery.
Since the second offer is almost 3000 euros more expensive, we are leaning towards the first one.
We have only read positive things about the Ecoflow storage so far. However, it has only been on the market for a short time. Fronius has been around much longer and is reputedly very reliable.
We wanted to ask here if anyone has the Ecoflow system and how satisfied you are with it?
M
motorradsilke22 May 2025 10:36The technical issue seems to have already been resolved in other countries; in France, it is reportedly much more widespread. The tax situation is probably more advanced there as well. So, it would simply require looking beyond one’s own borders.
andimann schrieb:
And with that, you face the same challenges as when implementing an island solution. Automatic switching, seamless transition... it’s not easy.
Best regards,
Andreas If the inverter, smart meter, and wallbox/vehicle communicate, it should definitely be possible to configure the system so that the electricity from the storage is not fed back into the grid but used only for the EV. So why would this require creating an island mode with grid disconnection? Also, it should not be a problem to set a limit, for example, to keep at least 50% of the electricity stored in the car battery.
N
nordanney22 May 2025 12:22motorradsilke schrieb:
in France it is apparently much more widespread.They also invested early in smart meters, which only cost users around €20 (the government really put a lot of money into this). Now nearly the entire population and the power grid are ready for it.Have you already had a smart meter installed for maybe €200?
M
motorradsilke22 May 2025 12:55nordanney schrieb:
Smart meters were adopted very early on, costing users just over 20€ (the government invested a significant amount). Now almost the entire population and the power grid are prepared for them.
Have you had a smart meter installed for maybe 200€?No, I don’t have solar panels or an electric vehicle yet. In 2 to 3 years, we’ll need a new car. If bidirectional charging is possible by then, I’ll consider solar panels and an EV. At least a smart meter would still be cheaper than an additional battery storage unit.N
nordanney22 May 2025 13:10motorradsilke schrieb:
No, I don’t have solar panels or an electric car yet. In 2 to 3 years, we’ll need a new car. If bidirectional charging is available by then, I’ll consider solar panels and an electric vehicle. At least a smart meter would still be cheaper than an additional battery. This is the classic chicken-and-egg problem. You (me too and almost all Germans) don’t have them yet. But for the energy transition and the grid (and thus variable electricity tariffs), we urgently need them. And because none of us have these devices, there are hardly any offers for bidirectional charging. It’s a vicious circle.
M
motorradsilke22 May 2025 13:19nordanney schrieb:
This is the chicken-and-egg problem. You (me too, and almost all Germans) don’t have any. But for the energy transition and the grids (and thus also variable electricity tariffs), we urgently need them. And because none of us have these devices, there are hardly any offers for bidirectional charging. It’s a vicious circle.Bidirectional charging is currently held back more by politics. In cases like yours, because it gets complicated again. There are several offers; many cars support it, as do wallboxes (maybe not for VW, but they are not the top choice among electric vehicles at the moment).Similar topics