For the third consecutive time, GoodWe, a global PV inverters and energy storage solutions provider, has been the most efficient Asian hybrid manufacturer in the storage inspection of HTW-Berlin (Hochschule für Technik und Wirtschaft). In this year’s efficiency test of PV-storage systems, GoodWe’s hybrid inverters once again showed high efficiency for both 5 kWp and 10 kWp systems.
A total of 18 different storage systems in the 5 and 10 kilowatts power classes were examined to determine the System Performance Index (SPI) as part of the "Electricity Storage Inspection 2023". The two tested GoodWe hybrid inverters, GoodWe 5kW-EH and GoodWe 10kW-ET, achieved a System SPI of 91.5% and 94.1% respectively together with BYD batteries.
With this exceptional system efficiency, the GoodWe GW5000-EH performed very well and is only 1.1 percentage points away from the best-placed system in the smaller reference case (5 MWh/a consumption with 5 kWp PV system). The GoodWe GW10K-ET also maintained a good position in the second reference case (5 MWh/a consumption with an electric car and a heat pump). Worth mentioning is that GoodWe has launched the upgraded version ET PLUS+ (16A) with greater performance, smart home connectivity and stronger MPPTs, as well as the extension of the ET and ETC hybrid inverter series to the power range of 15-50kW and with the C&I models bringing values of high power generation and charging power for optimal energy harvest. Combined with high-voltage battery Lynx Home F Plus+ Series and the C&I battery Lynx C, GoodWe underlines its leading position in hybrid and energy storage solutions.
The SPI determined by the HTW researchers is an economic index and indicates how much the tested storage system reduces electricity costs compared to ideal energy storage systems. The better the efficiency-related properties, such as conversion efficiencies, control speeds or standby consumption, the higher the cost savings achieved.
Another focus of the study is the design of PV storage systems. The simulations and analyses carried out show that sizing the PV system as well as the storage system according to demand is particularly important from an economic standpoint. The larger the PV system, the higher the avoided CO2 emissions. Any suitable roof surface should be used to produce solar electricity in order to increase the degree of self-sufficiency and reduce CO2 emissions. The use of the two tested GoodWe hybrid inverters 5k-EH and 10k-ET and the installation of a simple PV storage system pays off for a homeowner not only in terms of CO2 emissions, but also financially, as they can break even within seven years. Based on rising energy prices, the payback period will shorten even further.
GoodWe Energy Storage Solutions
GoodWe has a wide range of storage products, covering single- and three-phase inverters, high- and low-voltage batteries. GoodWe invests heavily in researching and developing storage solutions in different application scenarios. In countries where electricity prices are high, an increasing number of homeowners prefer to install hybrid inverters to maximize self-consumption. The back-up function is supported to ensure a reliable power supply in the event of power outages, and intelligent power management through GoodWe’s self-developed monitoring platform also makes energy in your control. GoodWe hybrid systems are the best solution for a steady uninterrupted power supply for both the residential and C&I applications.
Optimized energy autonomy
Smart and efficient operations
Modern and compact design
Highest safety standards
GoodWe ET PLUS+ Series, Three-phase Energy Storage Inverter
Smart optimization of energy autonomy across residential ecosystemsOperating at the heart of the integrated PV power and storage system, our ET Plus+ hybrid inverters are designed to maximize energy output, enhance self-consumption, and facilitate back-up power. With intelligent load controls and wide battery voltage range, the set-up can be flexibly configured to meet individual needs across the residential ecosystem. Combine with GoodWe battery system Lynx Home F Plus+ for a safe and reliable energy storage solution.
GoodWe EH Series, Single-phase Energy Storage Inverter
The GoodWe EH Series is a single-phase, on-grid inverter that is designed to maximize self-consumption of PV energy. The EH Series is compatible with high voltage batteries to empower a flexible system design. As the core of reliable electricity supply, EH series can automatically realize the UPS-level switching to the back-up mode in less than 10ms, ensuring that critical loads experience with no interruption. Being communicative by supporting multiple communication protocols, it allows for smart home integration and maximized system status transparency.
GoodWe is a world-leading PV inverter and energy storage solutions manufacturer and is listed as a public limited company on the Shanghai Stock Exchange (Stock Code: 688390). With an accumulative delivery of more than two million inverters and installation of 35 GW in more than 100 countries and regions, GoodWe solar inverters have been used in residential and commercial rooftops, industrial and utility scale systems and range from 0.7kW to 250kW. GoodWe has more than 4,000 employees situated in over 20 different countries and is regarded as the Global Top 3 storage inverter supplier by Wood Mackenzie in 2021. For more information, please visit goodwe.com.
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