Growatt SPF 6000 ES Plus is an off-grid inverter with energy storage capability, designed for installations where high independence from the grid and stable power supply to consumers are key. These devices feature two independent MPPTs, facilitating better energy yields with panels of different roof orientations or under partial shading conditions - each tracker optimizes the performance of its own PV string. In practice, this translates to more predictable energy production throughout the day.
High European efficiency means better results in real, variable operating conditions (not just in the lab), which is crucial for annual production and system profitability. The SPF 6000 ES Plus supports remote monitoring via WiFi or GPRS and communication integration with BMS (e.g., CAN/RS485), enabling seamless collaboration with energy storage systems - both lithium and lead-acid types. Additional advantages include CE certification (EMC and LVD) and parallel operation capability, which facilitates system expansion in larger homes and small commercial buildings.
Ranking
Price offers
| Shop | Country | Price | Per kW | Stock | Offer updated | Link to shop |
|---|---|---|---|---|---|---|
| www.battery-import.cz | Czechia | 11 148.76 Kč net | 1 858.13 Kč/kW | In stock | yesterday | Visit shop |
| www.frexolaire.com | France | 540.96 € incl. VAT | 90.16 €/kW | In stock | yesterday | Visit shop |
Specifications
Pros and cons
Two MPPT trackers (120-450 VDC range each) allow two separate PV strings with different orientations or tilt angles to be handled independently. A total PV input of 8,000 W against a 6 kW AC output yields an oversizing ratio of ~1.33, which in off-grid operation translates to improved battery replenishment under low-irradiance conditions.
Up to six SPF 6000 ES Plus units can be connected in parallel, scaling the system to 36 kW AC without replacing the inverter. This is a key feature for expanding prosumer installations and small commercial facilities, where modular growth reduces future upgrade costs.
The ability to handle momentary loads of 12,000 VA-twice the rated power-ensures reliable motor starting (pumps, air conditioners, power tools). This is typical for high-frequency inverters in this class and is comparable to the Deye SUN-6K-SG01LP1, which offers 18,000 VA surge at 6 kW.
Support for 48 V lithium (Li-ion/LiFePO4), lead-acid, and GEL batteries-with BMS communication via CAN or RS485-enables integration with the majority of battery solutions available on the European market. AC charging current of up to 80 A (from grid or generator) accelerates battery bank replenishment.
Built-in WiFi and GPRS module support enables remote monitoring via the ShineServer platform without additional hardware. CE certifications (EMC and LVD) confirm compliance with EU market requirements, and Growatt was recognized by S&P Global Commodity Insights as a Tier-1 PV inverter supplier (October 2025), positively supporting project bankability.
Peak efficiency of 93% falls below that of top-tier off-grid inverters in this power class: the Victron MultiPlus-II 48/5000 achieves ~96% and the SMA Sunny Island 6.0H ~97%. Over a full year in an off-grid system with a large battery bank, a 3-4 percentage-point gap results in measurably higher conversion losses during cyclic charge/discharge operation.
Cases of bricked units running firmware/DSP versions 100.01 and 101.01 following update attempts have been documented on the DIY Solar Power Forum (2024). Growatt has not issued an official advisory, which increases the risk of a service error by inexperienced installers.
A transfer time of 10 ms (typical) / 20 ms (maximum) rules out powering interruption-sensitive equipment such as servers, medical devices, or industrial systems. By comparison, the Victron MultiPlus-II offers <20 ms and dedicated online-class UPS units achieve 0 ms. In residential installations with typical loads, this difference is generally not perceptible.
Alternatives
About the SPF 6000 ES Plus series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.