European power supply · online since 2022

Battery storage, inverters & charging hardware. Wired for European installers.

ONSA Power supplies the electrical backbone of modern energy projects — BESS, hybrid inverters and EV charging kit — to installers and EPCs across Europe. Engineering review on every order.

27
European markets
served across the continent
4+
years
in power hardware supply
1 MWh+
BESS
single-site capability
48h
response
on typical quote requests
§ 01
System lines

Three system lines. One purchase order. Consolidated Europe-wide logistics.

01 / Storage

Battery energy storage

C&I battery systems from 30 kWh residential-plus up to containerised 1 MWh+ platforms. LFP chemistry, EMS-ready, grid-tie or off-grid capable.

→ get pricing
02 / Power conversion

Hybrid & string inverters

3 kW to 125 kW hybrid, string and industrial inverters — Solis, GoodWe, Deye and Sungrow-class hardware. Single-phase, three-phase, EU-certified.

→ get pricing
03 / EV & BoS

EV charging & balance of system

AC and DC fast chargers (7–120 kW), switchgear, cabling, monitoring and grid protection. One PO covers the whole electrical backbone.

→ get pricing
§ 02 — Engineering

We size it
before we ship it.

Every ONSA Power order gets a technical review before it moves. We check system sizing, phase balance and component compatibility — because our team spent four years installing this hardware before distributing it. When a datasheet doesn't add up, we spot it.

  • 01System sizing & phase-balance validation
  • 02Free pre-sales technical consultation
  • 03Grid-code compliance & documentation support
  • 04Post-sales support and RMA coordination
§ 03 — Coverage

Powering projects across Europe.

Stocked from Central-European hubs. Consolidated freight to European countries — one invoice, one bill of lading, local VAT handling where applicable.

01Slovakia02Czech Republic03Poland04Hungary05Germany06Romania07Bulgaria08Spain09Italy10Belgium11Netherlands12Luxembourg13Sweden14Finland15Norway16Denmark17Greece18Croatia19Serbia20Slovenia21Bosnia and Herzegovina22Austria23France24Portugal25Ireland
European coverage across EU markets plus Serbia, Bosnia and Herzegovina, Norway, and the UK. Switzerland on request.
Field note
ONSA Power flagged a phase-imbalance risk on our 240 kW BESS deployment that would have cost us three days on commissioning. Distributors don't usually catch that.
— Head of Engineering, C&I integrator · Poland
§ 04 — Get in touch

Need pricing or a technical review on your next project?

Send us the brief — system size, key components, delivery window — and we'll return a quote and technical notes within one business day.

→ Become a partner
Response time
Within 1 business day
Hours
Mon–Fri · 08:00–17:00 CET
Scope
B2B — installers & EPCs