Customer support:+421 911 999 145[email protected]
    Currency
    EUR
    Language
    English
    Fair price
    Fair price
    We offer competitive prices with an emphasis on quality and transparency
    Fast delivery
    Fast delivery
    Products in stock, ships now. Backordered items ship in 5 days.
    Loyalty bonus
    Loyalty bonus
    Regular customers get discounts and bonuses for their loyalty.
    Expert turnkey installation
    Expert turnkey installation
    We provide end-to-end services with a quality guarantee.
    Most popular
    Solis S6-EH3P10K-H-EU
    Official distributor
    Solis S6-EH3P10K-H-EU
    In stock (>10 pcs)
    €1 427,51 incl. VAT
    €1 160,58
    23002150052
    Dyness Tower Pro TP11
    Dyness Tower Pro TP11
    In stock (>10 pcs)
    €3 142,65 incl. VAT
    €2 555
    DYNESS-TOWER-PRO-TP11
    ET(ETPlus+) 33
    Goodwe GW10K-ET Plus+
    On request
    €0 incl. VAT
    €0
    GW10K-ET
    ET(ETPlus+) 33
    Sale
    Goodwe GW8K-ET Plus+
    On request
    €0 incl. VAT
    €0
    GW8K-ET
    Dyness Tower T17
    FREEFREE €3 530 –100 %
    Dyness Tower T17
    On order (1 pcs)
    €0 incl. VAT
    €0
    DYNESS-TOWER-T17
    Tigo TS4-A-O
    €31,50 –100 %
    Tigo TS4-A-O
    On the way (>10 pcs)
    €0 incl. VAT
    €0
    462-01252-32
    15K 1
    FREEFREE €5 499 –100 %
    Soluna 15K HV
    On request
    €0 incl. VAT
    €0
    SOLUNA-HV-15K
    Sale
    ZENCAR Model W Pro (Basic, Type 2, 16A, 5m)
    Sale
    €324,39 –25 %
    ZENCAR Model W Pro (Basic, Type 2, 16A, 5m)
    In stock (6 pcs)
    €299 incl. VAT
    €243,09
    ZENCAR_W-PRO_T2_16A_5M_3P_BASIC
    ET(ETPlus+) 33
    Sale
    Goodwe GW8K-ET Plus+
    On request
    €0 incl. VAT
    €0
    GW8K-ET
    New
    VICTRON IS DCDC ORION TR 12 48 8
    Victron Isolated DC-DC Converter Orion-Tr 12/48-8
    On request
    €0 incl. VAT
    €0
    VICTRON-IS-DCDC-ORION-TR-12-48-8
    Victron BatteryProtect 12/24V 220A
    Victron BatteryProtect 12/24V 220A
    On request
    €0 incl. VAT
    €0
    VICTRON-BATPROT-12-24V-220A
    Victron Color Control GX
    Victron Color Control GX
    On request
    €0 incl. VAT
    €0
    VICTRON-COLOR-CONTROL-GX
    Victron Smart Battery Sense
    Victron Smart Battery Sense
    On request
    €0 incl. VAT
    €0
    VICTRON-SMART-BATTERY-SENSE
    Victron Venus GX
    Victron Venus GX
    On request
    €0 incl. VAT
    €0
    VICTRON-VENUS-GX
    Victron SmartSolar MPPT 100/50
    Victron SmartSolar MPPT 100/50
    In external warehouse (>10 pcs)
    €189 incl. VAT
    €153,66
    VICTRON-SRTSOLAR-100-50
    Huawei SUN2000-600W-P
    Huawei SUN2000-600W-P
    In external warehouse (>10 pcs)
    €59,04 incl. VAT
    €48
    SUN2000-600W-P
    bundle gw sol cs
    Photovoltaic package with 10kWh output and 15kWh battery
    On request
    €0 incl. VAT
    €0
    1980
    Victron Busbar 600A/70V/4HCC
    Victron Busbar 600A/70V/4HCC
    In external warehouse (>10 pcs)
    €133,36 incl. VAT
    €108,42
    VICTRON-BUSBAR-600A-70V-4HCC
    Victron MPPT WireBox-XL Tr
    Victron MPPT WireBox-XL Tr
    On request
    €0 incl. VAT
    €0
    VICTRON-MPPT-WIREBOX-XL-TR
    VICTRON IS DCDC ORION TR 12 24 5
    Victron Isolated DC-DC Converter Orion-Tr 12/24-15
    On request
    €0 incl. VAT
    €0
    VICTRON-IS-DCDC-ORION-TR-12-24-15
    Victron SmartSolar MPPT 150/60-Tr
    Victron SmartSolar MPPT 150/60-Tr
    On request
    €0 incl. VAT
    €0
    VICTRON-SRTSOLAR-150-60-TR
    New Articles
    ONSA Plus at the First Green Energy Fair in Zagreb
    ONSA Plus at the First Green Energy Fair in Zagreb
    The first edition of the Green Energy Fair took place at Arena Zagreb (29-30 October 2025), and ONSA Plus was proud to participate among the regional renewable-energy community....
    Read article
    ONSA Plus at Smart Energy Forum Prague 2025
    ONSA Plus at Smart Energy Forum Prague 2025
    ONSA Plus participated in this year’s Smart Energy Forum in Prague, one of Central Europe’s premier events dedicated to solar energy, energy storage, and smart...
    Read article
    ONSA Plus partners with Solis to strengthen PV inverter distribution in Central Europe
    ONSA Plus partners with Solis to strengthen PV inverter distribution in Central Europe
    ONSA Plus, a Slovak renewable energy solutions provider, has announced a new partnership with Solis, one of the world’s largest inverter manufacturers, to distribute Solis’...
    Read article

    About us

    Description

    Photovoltaic power plants for companies with high consumption

    We’ll design the optimal photovoltaic solution for your energy-intensive operation and handle all the paperwork, including subsidies. We know how to do it right. So it will keep saving you money even in 20 years

    • We’ll reduce your electricity costs
    • We’ll provide a stable backup source
    • We’ll increase cost predictability
    More information

    Latest discussion

    OP Avatar of author

    Corsair 18AWG-Kabel für 8-polige auf duale 6+2-polige Stromversorgung

    ONSA Plus | 22.03.2023 |
    Corsair 18AWG Kábel pre zdroj 8pin na dual 6+2pin
    Dobrý deň, nie, nejedná sa o origninál. Kábel má však rovnaký pinout (type 4), teda pasuje na zdroj a dá sa bezpečne používať. Je dôležité overiť kompatibilitu s Vaším zdrojom na stránkach výrobcu.

    Latest rating

    Fronius Ohmpilot 9.0-3

    Fronius Ohmpilot 9.0-3

    Marian Zavadský | 03.09.2025
    spoľahlivo funguje už viac ako 4 roky. v nastaveniach sa da krásne nastaviť podmienky. dobre funguje aj s 6x1kw špirálami, zapojenými paralérne. po zapojení si sám zmeria špirály. od marca do novembra mam dosť teplej vody ak nepoužívam bazén. menič najpr dobije baterie a potom dáva prebytky do akumulacky.
    10-capacitor GPU Riser 012

    10-capacitor GPU Riser 012

    19.11.2022