Does the inverter provide backup during outages?

Hybrid inverters (BR-SPI, Solis) have a backup function: when the grid fails they switch automatically to the battery and power essential circuits within milliseconds. The off-grid inverter runs autonomously anyway. We configure the backup circuits during commissioning.

What does dual MPPT mean and why does it matter?

MPPT is the circuit that tracks the panels’ maximum power point. "Dual" means two independent trackers — you can connect two panel groups on different orientations or tilts (e.g. east and west) without one dragging down the other’s output. The result: more energy harvested throughout the day.

Which batteries are the inverters compatible with?

All models work with 48 V LiFePO4 batteries, including the BRLV series we supply. Inverter-battery communication is via RS485 / CAN. If you want a complete system, the simplest path is a hybrid kit, where the inverter and battery are already matched and configured.

Can I link several inverters together?

Yes. The BR-SPI supports parallel operation of up to 6 units (up to 60 kW) and can be configured three-phase with 3 units. So you can start with one inverter and expand the system as consumption grows, without replacing what you already have.

Why do you offer Solis alongside BR Solar?

Solis is one of the largest inverter manufacturers worldwide, with an extensive service and spare-parts network in the EU and a very good price/performance ratio. We offer both brands so we can pick the right inverter for your exact project and budget.

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Off-grid and hybrid photovoltaic inverters

The brain of the system: it converts the panels’ energy and routes it intelligently between home, battery and grid.

From off-grid inverters for remote homes (BR-HSI 5 kW) to hybrid inverters with dual MPPT and backup (BR-SPI 10 kW, Solis 10–15 kW). Sized, delivered and commissioned by our own team.

Off-grid & hybridDual MPPT · backupParallel operation

Request a configuration See the models

Off-grid vs hybrid

Which inverter type fits you?

The difference is not power, but the relationship with the grid. An off-grid inverter works in isolation; a hybrid one combines the grid, panels and battery — with automatic backup during outages.

Off-grid

Isolated system, no grid

The inverter powers the home directly from panels and battery. It does not depend on the grid and does not inject surplus — the energy you produce stays 100% yours.

Panels

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Inverter

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Home

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Battery

✓Total independence from the grid

✓Ideal where there is no connection

✓Pure sine wave for any load

Suited for: remote homes, cabins, farms, telecom relays, rural areas.

Hybrid

Grid-connected + battery

Combines grid, panels and battery. It maximizes self-consumption, injects the surplus and switches automatically to the battery during outages.

Panels

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Inverter

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Grid

✓Maximum self-consumption + auto backup

✓Dual MPPT — more energy harvested

✓Injects surplus, draws when needed

Suited for: grid-connected homes that want self-consumption, savings and backup.

Why the inverter matters

Dual MPPT

Harvests more energy

Connect panels on two different roof orientations (e.g. east and west) and harvest more energy, without one group dragging down the other.

99.9%

MPPT efficiency

Almost all the panel energy reaches the home or battery, not lost in conversion.

1–6

Paralleling

Up to 6 units in parallel (60 kW) and three-phase configuration with 3 inverters.

24/7

Time-of-use scheduling

Set when the battery charges and discharges — useful for day/night differentiated tariffs.

Consumption optimization

How the inverter optimizes home consumption

Panels produce the most at midday, but the home consumes the most in the morning and evening. The hybrid inverter moves energy where it is needed, hour by hour.

During the day you consume directly from the panels and charge the battery with the surplus; in the evening and at night you use the battery, drawing only the bare minimum from the grid.

Solar productionDirect self-consumptionFrom battery (evening)From grid (night)Home consumption

Illustrative example of a sunny day; real curves depend on consumption, system size, season and panel orientation.

The inverter range

Three inverters, from off-grid to three-phase hybrid

All compatible with 48 V LiFePO4 batteries (including the BRLV series) and sized to your consumption and panels.

Off-grid

BR-HSI 5000AP

5 kW

Pure sine wave · 48 V

Recommended: remote homes, cabins, farms, telecom

Output230 Vac sine

Peak10,000 VA

Max PV7,500 W

MPPT efficiency99.9%

on request

Request a configuration

Most versatile

Hybrid

BR-SPI 10K-SP

10 kW

Dual MPPT · parallel 1–6 · three-phase

Recommended: homes with battery and backup

Peak15,000 W

MPPTdual · 5,500+5,500 W

Charge current200 A

Parallelup to 60 kW

on request

Request a configuration

Hybrid

Solis Hybrid

10–15 kW

Single / three-phase · EU service

Recommended: large homes, three-phase, light commercial

Single-phase 10 kW8,435 lei

Three-phase 15 kW11,433 lei

MPPTdual

Compatible48 V batteries

from 8,435 leiincl. VAT

Request a configuration

An inverter alone is not a complete system: it is sized together with the panels, battery and home consumption. For a complete system — inverter + battery + installation + commissioning, turnkey — see the hybrid kits.See the hybrid kits →

Full technical specifications

Official data from BR Solar and Solis datasheets — open the model you are interested in.

Input / output

Output power5,000 W

Peak10,000 VA

AC output230 Vac · 50/60 Hz

MPPT efficiency99.9%

Battery & PV

Battery voltage48 Vdc

Max PV7,500 W

PV voltage (VOC)500 Vdc

MPPT range60–450 Vdc

Physical & communications

CommunicationsRS485 / USB / Wi-Fi

Dimensions359 × 290 × 133 mm

Weight8.5 kg

Warranty2 years

Price on request · 2-year warranty · parallel up to 6 units

Source: BR Solar (BR-HSI 5000AP, BR-SPI 10K-SP), Solis datasheets and VistaVerde's quote. Full PDF documentation available on request.

Commercial and industrial

Converters and control for large systems

The models above are for homes and workshops. For industrial halls, large farms and production sites we work with bidirectional power conversion systems (PCS) and a microgrid controller that holds photovoltaics, storage, the grid and the generator together.

Model	Power	Role in the system
SP125HCPS	125 kW	Bidirectional storage converter (PCS), C&I systems
MPS0250	250 kW	Power converter, LV or MV connection
MPS0500	500 kW	Power converter for production sites
STS_PCC	—	Microgrid controller: switches between grid, PV, storage and generator

The MPS0250-0500 converters are certified to EN 50549-1 for low-voltage connection and EN 50549-2 for medium voltage. Sizing and the connection scheme are established per project, based on contracted power and the grid operator approval.

Request a project analysis

Which inverter do I choose for my project?

The choice depends on the grid connection, system power and phase type.

I have no grid connection

Off-grid inverter

BR-HSI 5000AP — an isolated system with battery, for homes, cabins and rural applications without a grid.

I have a grid and want self-consumption + backup

Hybrid inverter

BR-SPI 10K-SP or Solis — maximize self-consumption, inject the surplus and get automatic backup during outages.

I have high or three-phase consumption

Three-phase hybrid

Solis 15 kW three-phase or 3× BR-SPI in parallel — for large homes, workshops and light commercial.

Want the complete turnkey system?

In a hybrid kit you get the inverter, battery, installation and commissioning in a single offer — with a final price agreed before the start.

See the 5–15 kW hybrid kits

FAQ

Frequently asked questions about inverters

An off-grid inverter works isolated from the grid: it powers the home from panels and battery, but does not inject surplus or draw from the grid. A hybrid inverter is grid-connected: it maximizes self-consumption, injects the surplus, draws from the grid when needed and switches automatically to the battery during outages. In short: off-grid for places with no connection, hybrid for grid-connected homes.

Find out which inverter fits you

Send us your consumption, whether you have a grid connection and which battery you want. We'll get back to you within 48 hours with the recommended inverter and a final offer.

Request a project analysis

Reply within 48h · Technical recommendation · Final agreed price