Growatt SPH series are hybrid inverters designed for installations where self-consumption matters, working alongside energy storage systems and providing stable home power. In practice, they combine grid-connected operation with smart charging and discharging management of batteries, enabling you to store excess solar energy and use it when it's most needed. SPH variants are available as single-phase and three-phase models, making them easy to adapt to typical home setups, but they're also suitable for smaller commercial projects.
A major advantage is the dual MPPT, which efficiently handles two independent module strings - a tangible benefit when panels face different orientations or experience partial shading. High European efficiency means better real-world performance compared to just laboratory results. Monitoring and communication are achieved via WiFi or Ethernet through apps and portals, and the system can be expanded with compatible energy storage solutions. The series also includes essential grid connection certificates for European markets and standard warranty protection typical of this class of equipment.
Ranking
Price offers
| Shop | Country | Price | Per kW | Stock | Offer updated | Link to shop |
|---|---|---|---|---|---|---|
| portable-sun.com | United States | 2 699 $ incl. VAT | 269.90 $/kW | In stock | 17h ago | Visit shop |
| www.self2solar.com | United States | 2 787 $ net | 278.70 $/kW | In stock | 17h ago | Visit shop |
Specifications
Pros and cons
Independent testing of the SPH series' MPPT algorithms demonstrates ~99.5% tracking efficiency under stable irradiance conditions and a dynamic response to irradiance changes within 10-15 seconds. The two independent trackers allow strings with different orientations or tilt angles to be managed without cross-losses - a tangible advantage in typical residential installations on multi-pitch roofs.
The three-phase SPH 7000-10000 TL3 BH-UP models achieve a maximum efficiency of 98.2%, while the 4-5 kW units reach 97.6-97.8%. These figures are competitive against comparable mid-range hybrid inverters (SolarEdge SE, Huawei SUN2000), which typically fall within the 97.5-98.5% range.
Switchover to battery backup occurs in under 10 ms, meeting UPS-class equipment protection requirements (IEC 62040-3, Category SS). Comparable manufacturers such as Fronius Symo GEN24 specify 20 ms - the SPH is faster in this regard, which matters when powering sensitive loads such as NAS devices and electronically regulated heat pumps.
The standard warranty period is 10 years for the European market, which is in line with the hybrid inverter segment (Huawei: 10 years, GoodWe: 10 years). Extended warranty options are available, and the series holds the necessary grid-connection certifications for European markets (CE, VDE-AR-N 4105 requirements).
The IP65 ingress protection rating permits outdoor installation without additional enclosures. Convection-based cooling (no fan in base variants) eliminates moving parts, reducing the risk of mechanical failure and ensuring quiet operation - a meaningful benefit when the unit is installed inside living spaces.
Growatt does not appear on BloombergNEF's Tier-1 Power Inverter Manufacturers list (contextual data: tier_1_bankable: false), unlike Huawei, SMA, or GoodWe (classified as Tier-1 in Q2 2025). This limits access to bank financing for projects >50 kWp, where financial institutions require equipment from manufacturers with a recognized bankability rating.
Current Growatt models (2018-2025) exhibit a field failure rate of 2-5%, whereas premium manufacturers (SMA, Fronius, Huawei) maintain rates below 1-3%. The gap is moderate but real, and may affect total cost of ownership (TCO) over the lifetime of larger installations.
Warranty claims processed through Growatt's service network are resolved within 23-40 days, which is longer than competitors with well-stocked spare-parts warehouses in Europe (e.g., SMA: replacement within 5-10 business days). Extended system downtime translates into measurable energy production losses.
Alternatives
About the SPH series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.