A: This is the number one question we are always asked, and the answer is different for everyone!
To answer this, we need to break this down into 3 answers:
- Using your battery system for storing Solar only
- Using your battery system to store Solar & Charge from the grid on cheap tariffs
- You don’t have solar; You are only looking to charge from the grid from cheap energy tariffs
Storing Solar Only:
The key to understanding what size battery system you need for storing excess solar depends really on what you are exporting back to the Grid on a daily/Monthly/Annual basis, Also understanding what your daily energy usage in your property also helps.
Due to the fact that our Lux systems are modular you don’t have to jump straight in with a big system! As a rule of thumb, we work on the following:
- PV systems that are 1kw to 2Kw – Start with a 1 battery system
- PV systems that are 2kw to 3Kw – Start with a 2-battery system
- PV systems that are 3kw to 4Kw – Start with a 2 to 3 battery system
You can always add more batteries later should you need too.
Storing Solar & Charging from the Grid:
Having the option to charge from the grid as well as storing excess solar PV really allows you to now expand your battery system.
To work out what would be a suitable system is understanding what your general daily energy usage is for your property. Understanding you can charge up to 14Kw of bankable battery capacity from the grid alone really gives you the option to expand, as a rule of thumb we recommend the following sizes systems based on Solar and Grid power combined:
- PV systems that are 1kw to 2Kw – Start with a 2 battery system
- PV systems that are 2kw to 3Kw – Start with a 3-battery system
- PV systems that are 3kw to 4Kw – Start with a 3 to 4 battery system
You can always add more batteries later should you need too.
