Published July 31, 2026 — PES Supply Brand Guide
Sungrow: Residential, Commercial, and Hybrid Inverter Brand Guide
Sungrow Power Supply is a Chinese tier-1 inverter manufacturer that has grown into one of the largest inverter companies in the world by shipment volume. With a product portfolio spanning residential string inverters, commercial three-phase units, utility-scale central inverters, and hybrid energy storage systems, Sungrow offers breadth that few competitors can match. For PES Supply customers navigating 50,000+ SKUs from 169 authorized brands, Sungrow represents the value-driven tier-1 option that balances competitive pricing with the engineering credibility of a top-three global inverter manufacturer.
Browse our complete selection of Sungrow string and hybrid inverters. Pair them with solar panels and battery storage for a complete system. Standard delivery is 7-10 business days.
1. Company Overview
Sungrow was founded in 1997 and is headquartered in Hefei, Anhui Province, China. The company is publicly listed on the Shenzhen Stock Exchange (300274) and has grown to become one of the world's largest inverter manufacturers, with cumulative installed capacity exceeding 400 GW globally. Sungrow operates R&D and manufacturing facilities in China, India, and other regions, with a significant North American presence. The company is consistently ranked among the top three global inverter suppliers by shipment volume and is classified as a tier-1 manufacturer by independent industry analysts.
Sungrow's market position is built on scale and value. The company's vertical integration and massive production volume allow it to price competitively while maintaining the engineering standards required for tier-1 classification. Sungrow competes directly with Huawei and other Chinese manufacturers on price while offering broader product depth including residential, commercial, and utility-scale inverters plus energy storage systems. In the North American market, Sungrow has invested in UL certifications and local support to compete with established European and US brands.
2. Current Product Lines
SG Residential String (SG-K Series)
The SG-K residential string inverter line spans 3 kW to 10 kW for single-phase residential applications. Key features include:
- IP66 rated enclosure for outdoor installation in all weather conditions
- 98.4% peak efficiency—competitive with premium European brands
- Dual MPPT for flexible array design across multiple roof orientations
- Compact, lightweight design for easy single-person installation
- Integrated DC switch for safety and simplified commissioning
SG Commercial String (3-Phase)
Sungrow's commercial three-phase string inverters scale from 10 kW to 110 kW, covering light commercial to large commercial rooftop and ground-mount applications. Models feature multiple MPPTs, high efficiency, and robust thermal management for sustained output in high-ambient commercial environments. The commercial line supports 1000V and 1500V system voltages depending on model.
SH Hybrid (Residential)
The SH series is Sungrow's residential hybrid inverter line, available from 5 kW to 10 kW (e.g., SH5.0RS, SH10RS). Features include:
- Integrated battery compatibility with Sungrow battery systems and third-party lithium batteries
- DC-coupled architecture with integrated MPPT for maximum round-trip efficiency (up to 97%)
- Backup power capability for critical loads during grid outages
- Wide battery voltage compatibility for flexible storage sizing
SH-RT Commercial Hybrid
The SH-RT series scales hybrid capability to 50-200 kW for commercial and industrial energy storage applications, supporting peak shaving, demand charge management, and microgrid operation.
Central Inverters (Utility-Scale)
Sungrow's central inverter line addresses utility-scale solar at hundreds of kilowatts to multi-megawatt scale, with integrated transformer and switchgear options for turnkey utility interconnection.
3. Recent Releases (2025-2026)
In 2025-2026, Sungrow expanded its residential hybrid SH series with updated models featuring enhanced backup power capabilities and improved battery compatibility across additional lithium battery brands. The SG-K residential line received firmware updates expanding grid-support function compliance for additional US utility territories, including enhanced voltage and frequency ride-through settings aligned with IEEE 1547-2018. Sungrow enhanced the iSolarCloud monitoring platform with improved API access and expanded fleet management features. The company also introduced updated commercial string inverters with higher power densities and improved thermal management for sustained output in high-ambient commercial environments. Sungrow continued to expand its North American UL 1741 SB certifications across the product range.
4. Certifications & Listings
- UL 1741 / UL 1741 SB: Current SG-K and SH series models certified to UL 1741 SB for IEEE 1547-2018 compliance
- IEEE 1547-2018: Full grid-support function compliance including volt-var, volt-watt, frequency-watt, and ride-through
- California Rule 21: Smart inverter certified for California interconnection
- HECO Rule 14H: Listed for Hawaiian Electric interconnection
- NEC 690.12 Rapid Shutdown: Compatible with SunSpec-based rapid shutdown systems
- UL 1699B: DC arc-fault circuit interruption integrated on applicable models
- IP66 enclosure: Rated for outdoor installation in dust and heavy rain environments
- CSA C22.2: Canadian safety certification
5. Warranty Terms
Sungrow offers a 10-year standard warranty on residential SG and SH series inverters—a meaningful differentiator that matches premium European brands and exceeds some Chinese competitors that offer only 5-year base warranties. Extended warranty options extend coverage to 15 or 20 years. The 10-year warranty on hybrid inverters is particularly competitive, as some hybrid manufacturers offer shorter base coverage. Warranty registration via iSolarCloud is required. Sungrow maintains North American service and support infrastructure for warranty claims and advance replacement.
6. Popular Products at PES Supply
| Model | Type | Power | MPPT | Efficiency | Key Features | Price Range |
|---|---|---|---|---|---|---|
| Sungrow SG5.0RS | Residential string | 5.0 kW | 2 | 98.4% peak | IP66, compact, integrated DC switch | $900-$1,300 |
| Sungrow SG10RS | Residential string | 10.0 kW | 2 | 98.4% peak | Single-phase, high power, IP66 | $1,500-$2,000 |
| Sungrow SH10RS | Residential hybrid | 10.0 kW | 2 | 97.5% round-trip | DC-coupled battery, backup power | $2,000-$2,800 |
| Sungrow SG30CX | Commercial string | 30 kW | 3 | 98.5% peak | Three-phase, multi-MPPT, commercial | $3,500-$4,800 |
| Sungrow SH5.0RS | Residential hybrid | 5.0 kW | 2 | 97% round-trip | Compact hybrid, battery-ready | $1,400-$1,900 |
7. Technical Comparison
| Feature | Sungrow | SMA | GoodWe |
|---|---|---|---|
| Peak efficiency | 98.4-98.5% | 98.2% | 97.6-98% |
| IP rating | IP66 | IP65 | IP65 |
| Standard warranty | 10 years | 10 years | 5-10 years |
| Hybrid option | SH series (DC-coupled) | Sunny Boy Storage (AC) | ET/EH/ES (DC-coupled) |
| Monitoring | iSolarCloud | ennexOS | SEMS+ |
| Cost per watt | $0.12-$0.20 | $0.15-$0.25 | $0.10-$0.18 |
| Commercial scale | Up to 110 kW string | Up to 30 kW string | Up to 250 kW |
Sungrow's competitive position is value plus breadth. The company matches or exceeds European brands on efficiency and warranty while undercutting them on price by 20-35%. The IP66 enclosure rating is a genuine advantage over IP65 competitors for outdoor installations exposed to heavy rain or dust. The trade-off versus European brands is service network maturity—Sungrow's North American service infrastructure is growing but is not as deep as SMA or Fronius. For price-sensitive commercial projects where Sungrow's scale and pricing matter, the value proposition is compelling.
8. Monitoring & Software
Sungrow's iSolarCloud platform provides monitoring and energy management for residential and commercial systems:
- Real-time monitoring: Production data, consumption data, battery status, and grid interaction
- Remote management: Remote parameter configuration, firmware updates, and fault diagnostics
- Fleet management: Multi-site dashboards for commercial installers and O&M providers
- API access: Open API for integration with third-party energy management and SCADA systems
- Energy management: Self-consumption optimization, time-of-use scheduling, and peak shaving for hybrid systems
- Smart meter integration: Net metering data and export control for utility compliance
9. Installation Notes
- Wiring: Sungrow uses conventional series string wiring. Verify string voltage calculations using Sungrow's iSolarDesign tool, accounting for cold-weather Voc and hot-weather Vmp within the MPPT operating range.
- Grounding: Sungrow transformerless inverters do not require DC array grounding in most configurations. Follow NEC 690.43 for module and racking grounding.
- Rapid shutdown: Sungrow inverters are compatible with SunSpec-based rapid shutdown systems. An external rapid shutdown device or optimizer system may be required for NEC 690.12 compliance depending on installation configuration.
- Grid code setup: Grid-support parameters are configured during commissioning via the inverter display or iSolarCloud. Select the correct country grid code to match local utility requirements.
- IP66 installation: The IP66 enclosure allows true outdoor installation without additional weather protection. Ensure conduit entries are properly sealed to maintain the ingress rating.
- Battery integration (SH series): Verify battery compatibility on Sungrow's published list. The SH series supports both DC-coupled charging via integrated MPPT and communication with lithium batteries via CAN bus.
10. FAQ
Is Sungrow a tier-1 manufacturer?
Yes. Sungrow is consistently ranked among the top three global inverter manufacturers by shipment volume and is classified as a tier-1 manufacturer by independent industry analysts.
How does Sungrow's warranty compare to European brands?
Sungrow offers a 10-year standard warranty on residential SG and SH series inverters, matching SMA and exceeding Fronius's 5-year base warranty. Extended coverage to 15-20 years is available.
Can Sungrow hybrid inverters work off-grid?
The SH series provides backup power during grid outages but is primarily designed as a grid-interactive hybrid. For true off-grid applications, dedicated off-grid inverters like Sol-Ark may be more suitable.
What is the difference between SG and SH series?
The SG series are grid-tied string inverters without battery capability. The SH series are hybrid inverters with integrated battery charging and backup power capability.
How long does delivery take?
All Sungrow orders from PES Supply ship within 7-10 business days. We do not offer same-day or free shipping.
Shop Sungrow
Explore our full inventory of Sungrow residential, commercial, and hybrid inverters. PES Supply carries 50,000+ SKUs from 169 authorized brands—your B2B electrical and solar distribution partner. Shop all Sungrow products. Delivery is 7-10 business days on all orders.