Battery Storage

Energy storage solutions to maximize your solar self-consumption. Residential and commercial installations in Luxembourg.

Home and Business Energy Storage in Luxembourg

A battery storage system lets you keep the energy your solar panels produce during the day and use it in the evening, at night or on cloudy days. The result: less dependence on the grid and a faster return on your photovoltaic investment.

Without a battery, a typical residential solar system self-consumes only 30 to 40% of its production — the rest is exported to the grid. With properly sized storage, self-consumption rises to 70 or even 90%, significantly accelerating the payback of your solar system.

Our Solutions

Residential

Compact batteries for private homes, sized to match your consumption and solar installation:

  • 5 to 10 kWh — suited to smaller households (1 to 3 people) with a 3 to 6 kWp system
  • 10 to 15 kWh — ideal for families with average consumption and a 6 to 10 kWp system
  • 15 to 30 kWh — large homes, heat pump or electric vehicle charging included
  • Modular systems — add storage modules over time as your needs evolve

Commercial

High-capacity systems for businesses and public buildings:

  • 30 to 200 kWh — peak shaving to reduce demand charges
  • Backup power — guaranteed business continuity during grid outages
  • Smart management — automated control based on time-of-use tariffs and solar production

Hybrid: Solar + EV Charging

The winning combination for electric vehicle owners:

  • Direct solar charging — your car charges from daytime solar surplus
  • Deferred charging — the battery stores solar energy and feeds the charger in the evening when you arrive home
  • Zero waste — every kWh produced is used, split between the home, the battery and the car

How It Works

  1. Sunny day — Your solar panels power your home first
  2. Surplus production — Excess energy is stored in the battery rather than exported to the grid
  3. Evening and night — The battery takes over and powers your home with stored energy
  4. Battery full — If the battery is full, surplus is automatically exported and paid at the feed-in tariff
  5. Power outage — In backup mode (model dependent), the battery powers essential circuits in your home

Our Process

  1. Consumption analysis — Study of your hourly consumption profile and your existing or planned solar production
  2. Optimal sizing — Calculation of the ideal storage capacity (not too much, not too little) to maximise your return
  3. Detailed quote — System cost, projected savings, payback period
  4. Installation (1 day) — Battery mounting, connection to hybrid inverter or existing system, configuration
  5. Smart configuration — Priority settings: self-consumption, EV charging, backup, grid export
  6. Monitoring — Real-time tracking of production, storage and consumption via app

Brands and Equipment

We install the most reliable storage systems on the market:

  • BYD (Battery-Box HVS/HVM) — lithium iron phosphate (LFP) technology, modular from 5.1 to 22.1 kWh, 10-year warranty, excellent cycle life
  • Pylontech (Force H2/US5000) — stackable LFP, outstanding value, compatible with most inverters
  • Huawei (LUNA 2000) — native integration with Huawei SUN2000 inverters, FusionSolar monitoring, modular from 5 to 30 kWh
  • Fronius (BYD compatible) — seamless pairing with Fronius Gen24 hybrid inverters
  • SMA (compatible BYD, Pylontech) — intelligent management via Sunny Home Manager
  • Enphase (IQ Battery) — AC-coupled system, ideal for retrofitting existing installations without a hybrid inverter

All batteries we install use lithium iron phosphate (LFP) chemistry — safer, longer-lasting and cobalt-free.

Subsidies and Incentives

  • Klimabonus — Grant for energy storage paired with a photovoltaic installation
  • PRIMe House — Additional subsidy as part of a comprehensive energy renovation
  • Reduced VAT (3%) — Super-reduced rate applicable to residential storage

We handle all your administrative paperwork to secure the maximum available support.

Return on Investment

  • Investment — €4,000 to €12,000 for a 5 to 15 kWh residential system (before subsidies)
  • Additional savings — €300 to €700 per year from increased self-consumption
  • Lifespan — 15 to 20 years (6,000 to 10,000 cycles depending on brand)
  • Warranty — 10 years standard across all brands we install

Why EVIA Solutions?

  • Storage expertise — precise sizing based on your actual consumption data
  • Premium brands only — BYD, Pylontech, Huawei: proven reliability and longevity
  • Installation in 1 day — clean and fast intervention
  • Compatible with all brands — we integrate a battery into your existing system regardless of inverter
  • Full monitoring — track your production, storage and consumption in real time
  • Integrated approach — we combine solar panels, battery storage and EV charging for maximum independence
  • Responsive after-sales service — troubleshooting within 24 hours across Luxembourg and the Greater Region
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