Complete BESS solutions — from balcony to utility scale.

EverVision Energy GmbH (i.G.), based in Nideggen, is the European commercial arm of Shenzhen Tomorrow Vision Energy Technology Co., Ltd., a battery storage system integrator. The group was founded in 2021, has a team of more than 70 and is active in over 50 countries. Its core R&D team brings more than 15 years of experience from BYD and Huawei.

Every scale from one source: plug-in balcony storage from 2.4 kWh, stackable home storage up to 15.6 kWh, commercial cabinets with 120 or 261 kWh and containerised systems from 1 to 5 MWh for grid and utility projects. Solar modules, heat pumps and EV chargers complete the range, all controlled by the same energy management.

No, but a battery pays off most with solar, because it shifts your midday solar power into the evening. Without solar, a battery can serve as a backup reserve or charge when electricity is cheap. If you already have a system, we check how the battery can be connected; if solar is planned, we size both together.

A common rule of thumb is about 1 kWh of usable capacity per 1,000 kWh of annual consumption, so a four-person household using 4,000 kWh lands at around 4 kWh. An EV, heat pump or backup needs add to that. Get your personal recommendation in two minutes with the system planner; How we calculate shows where the rule comes from.

In Germany, plug-in solar systems have been a privileged structural change since October 2024: landlords and owners' associations can no longer refuse them without good reason, but they may have a say in how they are mounted. So ask before you install. Feed-in power is capped at 800 W, which our balcony system complies with. The only registration needed is in the Federal Network Agency's market master data register, which takes a few minutes online.

That depends on the system and the installation, which is why we settle it during planning. The EV-Ray 2.4 home battery, for example, has a dedicated backup output with 2.4 kW continuous power for your essential devices. Our commercial and hybrid systems switch from grid to off-grid operation in under 20 milliseconds and can integrate a diesel generator as a reserve if needed.

Terms differ per product and are stated in the quotation you receive from us, together with the binding datasheet. For home batteries the manufacturer states 5 years or 8,000 cycles with at least 80 % residual capacity. For commercial and utility storage, duration and scope depend on the project; we tell you the terms for your configuration before you decide.

All EverVision storage systems use lithium iron phosphate (LiFePO₄). This cell chemistry is considered especially thermally stable and far less prone to thermal runaway than other lithium-ion types. Add Tier-1 automotive-grade cells and a self-developed battery management system. For the systems we deliver, the CE declaration of conformity and the UN38.3 transport test report are in place; further test certificates and the datasheets follow per product on request.

They are guide values based on public reference data, such as the European Commission's solar data (PVGIS) and current electricity prices from BDEW and Eurostat. We deliberately keep assumptions conservative so savings come out low rather than high. Every figure is listed with its source on How we calculate. A binding quote follows only once we know your site and consumption.

The price depends on capacity, power, installation and grid connection, so we don't quote a flat rate. After your enquiry you receive indicative prices and lead times from the start, before you commit to anything.

A specialist reviews your details and gets back to you within 2 working days. In a short call we clarify open points such as your roof, load profile or grid connection, then send you a personal quote. From enquiry to commissioning you have one dedicated contact. The enquiry is free and non-binding.

Our focus is Germany, Austria and Switzerland, and we also plan projects elsewhere in the EU. For other countries, just ask: the EverVision group is active in more than 50 countries. Send an enquiry