Batteries for solar panels
Store the energy you generate. Use it when you need it.
What does a solar battery actually do?
Your solar panels generate energy throughout the day — but most homes use it in the morning and evening, not at midday when production peaks. A battery captures that surplus and stores it for when you actually need it, reducing what you draw from the grid.
Store the energy that your panels generate but that you don't consume at that time.
It supplies stored energy at night or on cloudy days, without touching the grid.
Power your appliances without relying on the power grid. Even in the event of a power outage, as long as the system includes an autoswitch.
Less grid consumption means less monthly electricity costs.
Five reasons to install a battery
A battery doesn't just store energy: it changes your home's level of energy independence.
Backup in power outages
Hours of battery life if the network goes down, without any interruption in your home. After the 2025 outage, the demand for batteries has continued to grow.
Get more out of your own solar energy
Use more of what your solar panels generate instead of putting it on the grid at a minimum price.
Energy when you decide, not when the sun comes up
Put appliances to work at any time of the day without worrying about the hours of solar generation.
Up to 5.1 kWh per module
Modular capacity:
Add batteries as your energy needs grow.
20+ year lifespan
Long durability with minimal maintenance.
An investment that pays for itself.
Are you ready to own your energy?
Let's get started and in just 2 months we can transform your home and start reducing your electricity bill
Questions?
We have the answers.
No, we exclusively carry out self-consumption installations connected to the grid. To completely disconnect from the grid, an off-grid installation would be required, which is much more expensive.
When you produce more solar energy than you consume during the day and then buy electricity in the evening or at night. It can also make sense if you have frequent power cuts, expensive tariff hours, or want to depend less on the grid.
If you consume most of your energy during sunlight hours, if your installation produces little surplus, or if your priority is the fastest possible payback, it may be better to start with panels only or prepare the system for a battery later.
In a typical home, a battery can significantly increase the share of solar energy you use directly at home. The result depends on your consumption, panel production, and installed capacity. That is why we calculate it with your data before recommending a battery.
It depends on how much energy you consume when the sun is no longer producing. A 5.1 kWh module can cover basic night-time loads or support essential consumption. More capacity makes sense if you have a heat pump, EV, pool, air conditioning, or high evening and night consumption.
Only if the system is prepared for backup. A battery alone does not always keep the home running during an outage. You need a compatible setup that isolates the home from the grid and powers essential circuits.
Usually, the priority is the fridge, lighting, router, boiler, basic sockets, or essential systems. Powering the entire home is not always the best choice because high-consumption equipment drains the battery faster.
It depends on the price you receive for surplus energy and the price you pay when buying electricity later. If you sell cheaply and buy back at a higher price, storing your own energy can make more sense than sending it to the grid.
Yes, but it is worth checking the inverter first. Eltex works with SAJ inverters, which support battery add-ons in different ways depending on the model. The R5 model can use a retrofit setup, while H1 and H2 models offer broader battery integration options. During the study, we check which setup applies to your installation and whether adding storage now or later makes more sense.
It depends on the installed cost, available incentives, electricity tariff, night-time consumption, and surplus energy. For some homes it is a financial decision. For others, autonomy, comfort, and backup during outages matter more.
We analyze your bill, consumption curve, expected or real solar production, tariff, and habits. With that, we can tell you whether a battery makes sense now, what capacity to choose, or whether it is better to wait.