Device Comparison
SAJ R5-5K-T2 vs Sungrow SG5.0/6.0RS vs Solis S6-GR1P(2.5-6)K-S vs Growatt MIN TL-X
A homeowner-friendly single-phase inverter comparison for buyers choosing between mainstream string-inverter ecosystems.
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Which To Choose
Start with the practical fit, then read the table.
SAJ R5-5K-T2
Best fit when a 5 kW inverter class, backup requirements like no native battery or backup output verified for this R5-5K-T2 grid-tied inverter; public-grid feed-in only in reviewed manual., and Home Assistant or local monitoring goals.
Sungrow SG5.0/6.0RS
Best fit when a 5 kW inverter class, backup requirements like no native backup-output support in the checked SG5.0/6.0RS string-inverter sources; backup use cases should be checked against Sungrow's SH hybrid inverter line instead., and Home Assistant or local monitoring goals.
Solis S6-GR1P(2.5-6)K-S
Best fit when a 6 kW inverter class, backup requirements like not supported; grid-tied string inverter with no backup output., and Home Assistant or local monitoring goals.
Growatt MIN 3000-6000TL-X
Best fit when a 6 kW inverter class, backup requirements like no native battery or backup output support verified for the TL-X string-inverter record; use Growatt XH / hybrid families for battery-ready planning., and Home Assistant or local monitoring goals.
Use this comparison when the shortlist is made up of straightforward single-phase residential inverter families and the decision is driven more by app, installer support, and brand fit than by hybrid extras.
At A Glance
Key fit signals before the full table
A quick pass over the most decision-shaping details for each device in this featured comparison.
SAJ R5-5K-T2
- Rated power
- 5 kW
- Max PV input
- 7.5 kW
- MPPT trackers
- 2
- Battery ready
- No
Sungrow SG5.0/6.0RS
- Rated power
- 5 kW
- Max PV input
- 7.5 kW
- MPPT trackers
- 2
- Battery ready
- No
Solis S6-GR1P(2.5-6)K-S
- Rated power
- 6 kW
- Max PV input
- 9 kW
- MPPT trackers
- 2
- Battery ready
- No
Growatt MIN 3000-6000TL-X
- Rated power
- 6 kW
- Max PV input
- 8.1 kW
- MPPT trackers
- 2
- Battery ready
- No
Before You Decide
Checks that matter before price.
- Match rated power and MPPT layout to the roof, not just the headline inverter size.
- Check whether battery-ready really means compatible with the battery path you want.
- Look at backup behavior early, because it can change wiring and quote complexity.
- Decide whether the vendor app is enough or whether local data access matters later.
| Install fit | ||||
|---|---|---|---|---|
| Phase support | Three-phase grid-tied output: 220/380 V, 230/400 V, or 240/415 V nominal AC ranges. | Single-phase grid-tied inverter; datasheet lists feed-in phases / connection phases as 1 / 1. | Single-phase residential solar systems | Single-phase 230 V residential PV inverter family. |
| Installation | Wall-mounted IP65 residential rooftop PV string inverter installed by a qualified electrician. | Wall-mounted, transformerless single-phase PV grid-connected string inverter with IP65 enclosure for residential PV installations. | Wall-mounted single-phase string inverter | Wall-mounted transformerless PV string inverter for indoor or outdoor IP65 residential installation. |
| Measurement | Three-phase grid-tied PV string inverter for DC PV-to-AC conversion, dual-MPPT PV input, and public-grid feed-in. | Single-phase grid-tied solar string inverter converting PV DC input to AC output; monitors inverter and PV operating data through Sungrow communication options. | Inverter telemetry for PV generation and grid export status | Single-phase grid-tied PV string inverter with dual MPPT input, export-control support, and Shine monitoring options. |
| Max current | 8.4 A | 27.3 A | 27.3 A | 27.2 A |
| Rated power | 5 kW | 5 kW | 6 kW | 6 kW |
| Inverter fit | ||||
| Max PV input | 7.5 kW | 7.5 kW | 9 kW | 8.1 kW |
| MPPT trackers | 2 | 2 | 2 | 2 |
| Battery ready | No | No | No | No |
| Backup support | No native battery or backup output verified for this R5-5K-T2 grid-tied inverter; public-grid feed-in only in reviewed manual. | No native backup-output support in the checked SG5.0/6.0RS string-inverter sources; backup use cases should be checked against Sungrow's SH hybrid inverter line instead. | Not supported; grid-tied string inverter with no backup output. | No native battery or backup output support verified for the TL-X string-inverter record; use Growatt XH / hybrid families for battery-ready planning. |
| Monitoring | ||||
| Protocol | Wi-Fi / eSolar Cloud / Modbus TCP | Ethernet / WLAN / RS485 / iSolarCloud | SolisCloud | ShinePhone / ShineServer |
| Local API | Yes | Yes | Yes | No |
| Cloud dependency | SAJ eSolarCloud app is standard; local Modbus TCP support may be used by integrations. | Uses Sungrow iSolarCloud for normal remote monitoring; local Ethernet / WLAN / RS485 / DI interfaces are documented, so the inverter is not cloud-only. | SolisCloud app is standard; local Modbus/integration options depend on installation. | Core inverter operation is local. Remote monitoring normally uses Growatt ShinePhone / ShineServer through optional Wi-Fi, 4G, RF, or LAN communication modules. |
| Home Assistant | Yes | Yes | Yes | Yes |
| Solar fit | ||||
| Solar import/export | Yes | Yes | Yes | Yes |
| Buying context | ||||
| Price range | Installer supplied; hardware price varies by model and region | Installer supplied; hardware price varies by model and region | Installer supplied; hardware price varies by model and region | Installer supplied; hardware price varies by model and region |
| Availability | EU, AU, Asia, selected global markets | Sungrow positions SG5.0/6.0RS for EU, MENA, LATAM, Australia, Southeast Asia, and related 50/60 Hz markets; local certification and distributor availability vary. | EU, UK, AU, Asia, selected global markets | EU, UK, Australia, Asia, and selected global Growatt markets; regional certification and model availability should be checked locally. |
| Source check | ||||
| Last verified | Jun 19, 2026 | Jul 25, 2026 | Aug 1, 2026 | Jun 12, 2026 |
| Product page | Official page | Official page | Official page | Official page |
| Documentation | Official docs | Official docs | Unknown | Official docs |
Verdict
Choose mainly on installer support, monitoring app preference, and local brand availability, because all four are credible single-phase string-inverter options for typical homes.
FAQ
Common decision questions.
Which solar inverter should I choose?
Choose the option that matches your installation constraints and data path first. For 4 solar inverter options, the full table is most useful after you know whether local data access, cloud convenience, backup behavior, solar visibility, or expansion matters most.
What should I check before comparing prices?
Check installation fit, required accessories, official documentation, monitoring platform support, and any unknown fields in the source-checked table. Price is only useful once those constraints are clear.
Can these devices work with local dashboards or Home Assistant?
SAJ R5-5K-T2, Sungrow SG5.0/6.0RS, Solis S6-GR1P(2.5-6)K-S, Growatt MIN 3000-6000TL-X list Home Assistant support in the catalog. SAJ R5-5K-T2, Sungrow SG5.0/6.0RS, Solis S6-GR1P(2.5-6)K-S are marked with local API support. Confirm firmware, region, and integration maturity before treating this as a final compatibility guarantee.
Are unknown fields a reason to avoid a device?
Not always. Unknown means the field was not confirmed from the reviewed source data. Treat it as a question for the installer, reseller, or manufacturer before making a purchase decision.
Does the verdict replace the specification table?
No. The verdict is a practical shortcut. Use the table to confirm the exact constraints that matter for your home, especially installation, monitoring, and support details.