Procurement Guide

How to source hybrid inverters

Hybrid inverter selection should confirm phase type, MPPT range, battery voltage, grid code, backup output, monitoring and certification scope.

Electrical fit

Check single-phase or three-phase output, battery voltage, MPPT range, backup load and solar array sizing before model selection.

Grid and monitoring

Confirm destination grid code, anti-islanding, export control, app monitoring, communication protocol and installer settings.

Battery matching

Review compatible LFP battery models, BMS communication, charge/discharge current and expansion limits.

Compliance

Request exact CE, IEC, grid-code and label files for the inverter model and destination market.

Start with topology

Hybrid, off-grid, string and microinverters solve different jobs

The current catalog shows several related inverter families so buyers can find the correct route. They are not interchangeable and should not be compared by rated kW alone.

Hybrid inverter

Coordinates PV, a compatible battery, grid connection and backup or energy-management functions. Start here when storage is part of the project.

Off-grid inverter

Prioritizes autonomous supply from PV and battery where the grid is unavailable or unreliable. Load surge and generator interaction become central inputs.

Grid-tie string inverter

Converts PV power for grid-connected generation without assuming a battery interface. Export control and destination grid requirements must be reviewed.

Microinverter

Works at module level for smaller distributed PV layouts. It should not be used as evidence that a battery-ready hybrid function is available.

Project support

Build the inverter specification around the electrical system

Phase and power review

Confirm single- or three-phase service, nominal voltage and frequency, continuous load, motor or compressor surge and the role of backup output.

PV input review

Share module data, string layout, Voc at minimum temperature, operating voltage, array power and orientation so MPPT fit can be checked.

Battery matching

Confirm low- or high-voltage architecture, operating window, charge/discharge current, BMS protocol, parallel expansion and approved battery combinations.

Grid and export review

State the destination, utility requirements, export limit, anti-islanding expectations and whether grid-code evidence is required for the exact model.

Monitoring boundary

Define local display, app or portal, data logger, meter or CT, communication protocol, remote service and third-party system integration.

Document and acceptance route

Agree drawings, settings, compatibility information, functional checks and destination documents before sample or project approval.

Selection matrix

Select a hybrid inverter by phase, battery and backup duty

Rated power is only one decision. The selected platform must also fit the PV array, battery voltage, backup loads, site grid and monitoring plan.

Project profileFamily to reviewCritical checksNext page
Small residential solar plus battery3–5kW single-phase low-voltage hybridHouse service, essential loads, PV string voltage, 48V battery protocol, backup transfer and export rule.5kW hybrid inverter
Larger home or light commercial system8–12kW hybrid platformSingle- or three-phase service, PV/MPPT channels, high- or low-voltage battery, backup output and meter interface.10kW three-phase hybrid
C&I solar and storage15–25kW three-phase high-voltage hybridLoad profile, PV array, battery operating window, external protection, export control, EMS and grid-document scope.20kW three-phase hybrid
Remote or weak-grid siteOff-grid or hybrid platform with generator reviewContinuous and surge load, autonomy, PV and battery sizing, generator interface, black start and maintenance plan.Microgrid planning
PV generation without batteryGrid-tie string or microinverter routeArray layout, grid connection, export control, monitoring and destination compliance; do not specify a hybrid battery function unnecessarily.Browse related inverter products
PV input and MPPT

Match the solar array to the inverter operating window

Send the PV module datasheet, modules per string, number of strings, site minimum and maximum temperatures, array orientation and expected DC oversizing. The review should compare maximum PV input voltage, MPPT operating range, current per tracker and the number of independent MPPT channels.

Voc at the coldest expected condition must remain within the inverter limit, while normal operating voltage must stay inside the MPPT range. Parallel strings must also respect tracker current limits. These checks should be made for the exact model rather than copied from a related inverter family.

Send with the RFQ: module model, string count, modules per string, array kWp, orientation, temperature range and any shading split.
Representative three-phase hybrid inverter product family
Representative inverter-family appearance. Terminals, ratings, display and enclosure details depend on the selected model.
Battery compatibility

Treat voltage and communication as a controlled interface

Voltage window

Match nominal and operating battery voltage to the inverter family; a 48V low-voltage battery cannot be assumed to fit a high-voltage hybrid platform.

Current and power

Check inverter charge/discharge limits, battery continuous and peak current, cable and protection requirements, and the resulting usable system power.

BMS protocol

Confirm the battery model, communication method, protocol version and required cable or pin mapping. A physical connector alone does not prove compatibility.

Expansion rules

Define permitted parallel modules or towers, firmware or addressing requirements, commissioning sequence and maximum supported capacity.

For a matched battery route, compare the BESS product families and send both inverter and battery requirements in the same inquiry.

Backup and grid control

Specify what must remain powered and how the site interacts with the grid

Essential-load boundary

List the loads on the backup output, their continuous power, startup surge, priority and required runtime. Whole-site backup should never be assumed from inverter kW alone.

Transfer and operating mode

Confirm grid-connected, self-consumption, time-of-use, backup, off-grid or generator-assisted modes and any transfer-time requirement.

Export control

Define zero-export or export-limit requirements, meter or CT placement, control response and utility acceptance responsibility.

Grid-code scope

State the destination and requested standard or utility document. Applicability must be confirmed against the exact inverter model and firmware scope.

Generator interaction

For weak-grid projects, define generator rating, start/stop ownership, charging limits, frequency behavior and the operating sequence.

Protection boundary

Align local switchgear, isolation, anti-islanding, earthing, surge protection and emergency shutdown with the installer and local engineer.

Monitoring and integration

Define who needs which data and control functions

Local commissioning

Installer access to setup, diagnostics, operating values, alarms, firmware and parameter records.

Owner visibility

App or portal access, energy flows, battery state, PV production, load and grid import/export where supported.

Third-party control

Required protocol, register map, gateway, data interval, command ownership and cyber or network boundary.

Service workflow

Alarm capture, log export, remote diagnosis, replacement process and the information required for technical support.

Installation risk

Efficiency, thermal conditions and enclosure fit affect usable performance

Ambient conditions

Share temperature, altitude, humidity, dust, salt exposure, indoor/outdoor position and direct-sun conditions.

Mounting and clearance

Confirm wall strength or equipment location, service clearances, airflow, cable entry, noise sensitivity and accessibility.

Derating review

Ask how temperature, altitude, PV voltage, battery voltage or phase conditions affect continuous output for the selected model.

System losses

Compare efficiency only within the same operating point and include battery, cabling and standby losses when evaluating a complete storage system.

System routes

Use the inverter inside a matched solar and storage plan

Residential solar storage

Match essential loads, roof array, battery capacity, self-consumption and backup priorities.

Residential solution

Commercial solar and BESS

Coordinate three-phase load, demand profile, PV production, battery schedule, export limit and site monitoring.

Solar-storage route

Weak-grid microgrid

Define grid, PV, battery, generator and critical-load interactions before selecting inverter quantity and operating mode.

Microgrid solution

Battery family selection

Review wall, rack, cabinet or container battery platforms together with voltage and communication requirements.

BESS collection
Technical resources

Request inverter files by model, battery and destination

Some technical and compliance materials are provided directly after the exact model, firmware, battery combination and destination requirements are confirmed.

Electrical datasheet

PV limits, MPPT range, AC output, battery window, backup output, protection, communication and environment ratings.

Request datasheet

Installation information

Outline, clearances, terminal and wiring information, meter or CT arrangement and available installation guidance.

Request installation files

Battery compatibility

State the battery model, voltage and BMS protocol so applicable compatibility information can be reviewed.

Request compatibility review

Grid and test scope

Send the destination and required standard, utility or tender evidence for model-level confirmation.

Review document process
Commercial workflow

Control compatibility before sample, branding and volume supply

  1. 1. System brief. Share phase, grid, PV, battery, backup, monitoring, destination and quantity.
  2. 2. Model shortlist. Compare topology, power, MPPT, battery window, backup and required interface.
  3. 3. Compatibility review. Freeze PV string, battery/BMS, meter, communication and grid requirements.
  4. 4. Sample and files. Agree labels, manuals, packaging, settings and the evidence required for evaluation.
  5. 5. Acceptance and order. Confirm functional checks, configuration record, included accessories, spare parts, delivery term and support boundary.
Supplier verification

Make the approved inverter configuration traceable

The model name, rated power, battery voltage, PV input, firmware or settings scope, communication accessory, labels, manuals, packaging and available compliance files should refer to one approved configuration. This reduces mismatch between quotation, sample and volume order.

What procurement teams value during review

  • A clear distinction between hybrid, off-grid and grid-tie models.
  • Battery compatibility confirmed with voltage and protocol evidence.
  • PV and MPPT limits explained against the proposed string layout.
  • Grid and document applicability tied to the exact model and destination.
Quick review

Check the hybrid inverter from four angles

Verify the proposed string layout

Provide module Voc, Vmp, Isc, Imp, modules per string, string count, temperature range, orientation and array power for comparison with the model's voltage, current and MPPT limits.

Verify electrical and communication fit

Provide battery nominal and operating voltage, current limits, capacity, BMS protocol, expansion method and existing compatibility information.

Define grid, export and backup behavior

State country, voltage, phase, frequency, export rule, meter or CT, essential loads, surge, runtime and generator interaction where applicable.

Request only applicable model files

List the datasheet, installation information, compatibility evidence, grid document, test information, label or manual needed for the selected model and destination.

Hybrid Inverter Buyer FAQ

What makes a hybrid inverter different from an off-grid inverter?
A hybrid inverter is normally selected to coordinate PV, battery, grid and backup or energy-management functions. An off-grid inverter prioritizes autonomous supply without relying on a stable grid. The correct route depends on grid availability, export rules, backup loads, generator use and destination requirements.
Can SUNFULL match inverters with battery packs?
A matched review can be requested. Send the inverter power and phase, battery voltage and capacity, continuous and peak current, BMS communication protocol, required expansion and operating mode. Compatibility should be confirmed for the exact inverter and battery combination.
How should buyers check PV string compatibility?
Provide module Voc, Vmp, Isc and Imp, modules per string, number of strings, site minimum temperature, array orientation and total kWp. The proposed string must remain inside the selected model's maximum PV voltage, MPPT range and tracker-current limits.
Can one hybrid inverter back up an entire building?
Not automatically. List essential and non-essential loads, continuous power, motor or compressor surge, required runtime, phase arrangement and transfer expectations. The inverter output, battery power and usable energy must all support the agreed backup boundary.
Do inverter certificates apply globally?
No. Grid-code, anti-islanding, EMC, safety, utility and importer requirements differ by country and sometimes by utility. State the destination and requested evidence, then confirm applicability against the exact inverter model, firmware and configuration before ordering.
What information is needed for zero-export control?
Provide the connection arrangement, point of common coupling, meter or CT location, phase type, export limit, response expectation and any utility requirement. Confirm whether the meter, CT, gateway and control logic are included or supplied locally.
Which files should an importer request?
Request the model datasheet, installation and wiring information available for the selected scope, battery compatibility information, meter or communication accessory details, label/manual requirements and the destination-specific test or certificate evidence needed for review.
Can SUNFULL support OEM branding for inverter projects?
Branding, label, packaging, manual language, accessory and software presentation can be discussed after the technical platform is selected. The available customization, evaluation quantity, production quantity, lead time and tooling scope must be confirmed in the current quotation.

Request a hybrid inverter compatibility review

Send phase and AC voltage, load and backup duty, PV module and string plan, battery voltage and BMS protocol, destination, export rule, monitoring needs, quantity and required documents. SUNFULL will identify the inverter family and open items for technical confirmation.

Request Compatibility Review