Growatt Noah 2000 tested: so good can be cheap

There are more and more balconies and more and more gardens. And with them the need for suitable battery stores also increases in order to be able to use the energy generated during the day efficiently in the evening. The Growatt Noah 2000 is one of these memory that is available as an extension for small solar power plants. With a capacity of 2 kilowatt hours (kWh) and standard MC4 compatible connections for entrances and outputs, it should fit seamlessly into existing inverter systems. In our practical test we have the facility, compatibility, value and control of the Balcon power plant storage took a closer look at Growatt.

This is how the Growatt Noah 2000 works

The purpose of the application is clear and tightly stuck: the Growatt Noah 2000 only works in conjunction with an external Inverter. As a mobile Power station Or the energy supplier In the event of a power failure, the device cannot be used. For this, a built-in inverter with 230-volt socket in and on the device would be necessary. The photovoltaic modules (PV modules) can be connected directly to the memory via two MPPT inputs. Depending on the settings in the app, the system loads the internal memory or supplies the inverter with enough energy to supply the house consumption up to a maximum of 800 watts, also controlled via Smart meter.

The solar modules come to the memory. We have simulated the input power in the test laboratory using professional direct current multifunction power supplies from Elektro automatic. — The solar modules come to the memory (red and black cable on the right) via MC4, via the two MC4 compatible connections on the left (bluish) the energy flows to the inverter.

Photo: computer picture

The memory can be loaded with up to 1800 watts via the two PV module inputs, which corresponds to the performance of four current PV modules. In this case, two modules must be connected to both inputs. Elegant: Growatt moves within the legal limit of 2000 wattsthat limits the solar module performance of balcony power plants. Inverter side are only 800 watts Legal – but thanks to the memory, the energy does not go to the network operator in the sunshine as a gift, but flows into the memory instead.

Value and fortification

The full metal housing makes a solid impression. With a weight of 24 kilograms and dimensions of 40.6 × 23.5 × 27.0 cm, the device is quite compact. From two devices in the network, it is advisable to attach the memory to a wall. Because without support, this is a very heavy tower that should not fall over for technical reasons: the connection with each other is only via connector contacts that are no further screwed and only merged through gravity. A corresponding wall bracket with screw connection is included.

We have simulated the input power in the test laboratory using professional direct current multifunction power supplies from Elektro automatic.
An external inverter receives the performance of the memory and finally feeds the energy into the house network.

Photo: computer picture

Commissioning

The establishment of the Growatt Noah 2000 begins with the connection of the hardware. Here the memory scores with clearly labeled cables and inputs to which PV modules and inverter are connected. The scope of delivery includes cables for two PV modules and one for the connection to the inverter. If you want to switch four modules, you have to get a suitable MC4-Y cable and any extensions.

Challenges of software

However, problems caused us to set up the app. In addition to data such as user name, password and email, a “verification code” must also be entered when registering. Without him it doesn’t go any further here. The manual is silent about it. After a little research, we find out that the dealer or installer must provide this code. If you order the memory on the Internet, it can sometimes be lost. In the app, Growatt states a number of the telephone hotline (+496997461269), but we did not go to the phone there or in the official Growatt hotline.

So that you can save yourself these detours, we have a tip: After an email to the Growatt support, we received an automated answer with helpful information: “For the installation code, please contact your installer. If you don’t have one, you can alternatively use the following code for Germany: AMZXB”. Even with some online retailers, official codes can already be found on the offer pages. We also managed the facility with one. Nevertheless: the entire procedure is confusing and cumbersome. In addition, there are a variety of technical inquiries at the beginning of the facility, which should overwhelm beginners in particular.

Connection into the home network

Another stumbling block is the requirement of a separate 2.4GHz WLAN network without special characters in the name and password. Most current routers summarize both frequency bands (2.4 and 5 gigahertz, GHz for short). If that is the case, you first have to occur in the menu of the router this network or 5 GHz switch off briefly – You can find out how this works in a separate guide. As with many other smart home products, this procedure is a nuisance here.

Control options via app

After these little detours, the fun can begin. When the system is so far and the app is successfully set up, the configuration is based on the configuration. The system generally allows a smart meter to be integrated, such as Shelly. However, an electric specialist must take care of the installation. The great thing: Such a device determines the electricity requirement of the entire house in real time and efficiently regulates the energy removal from the storage. This variant is the ideal, but unfortunately not always implementable. In most cases, the balcony power plant owner will therefore rely on static memory feeding due to a lack of smart meters in the main power distribution.

But don’t worry, the static attitudes are not of bad parents either. Any number of time zones with freely configurable consumption and rules can be defined in order to cope with the expected consumption as fair as possible. The “Battery first” function first loads the battery with the solar power and only supplies the consumers in the house with energy from the sun when it is full. Among other things, this can make sense if there is very little consumption load in the period and you know that you need a lot of electricity in the evening. Another benefit of this function is in possession of a dynamic electricity tariffs is. Here, the user can consume and shop for the solar power that is very expensive at times when the electricity is very expensive when it is very cheap. Most of the time, the electricity on the stock exchange is traded cheaper during the day during the day, as many renewable energies feed. Here you should rather save solar energy for the evening and buy home consumption during the day. In the evening, the user then has the free current from the memory. Even so, some money can be saved again.

There are many ways in the app to set schedules for the memory.

Photo: Computer Bild/Screenshots Shinphone app

How to determine your consumption

To optimally choose the settings, there is a simple tip for determining the need: Look at your electricity meter and write down the stands at different times. Example: County in the morning before work at 7 a.m.: XXXX09 and after taking home at 5 p.m.: XXXX11. Means that 2 kWh (corresponds to 2000 watt hours, or WH) in 10 hours in the absence. This is the average base load of all consumers in the absence. An average of 2000 Wh/10 hours = 200 watt hours per hour. In this period, 200 watts are entered in the app.

Not bad, but at least good to know: the performance defined in the app does not quite correspond to the really fed -up performance. The loss of the inverter is probably not taken into account in the app. — Not bad, but at least good to know: The performance defined in the app (58 watts) does not quite correspond to the really fed out of 33 watts, which our precision measuring device ZES room has recorded. The loss of the inverter is probably not taken into account in the app.

Photo: computer picture

Evaluations in the app

The evaluations and statistics are easy to read and clear. In addition to the real-time ad of the PV module performance, you have access to history in Watt, the battery charging capacity and house consumption. Although this is a bit simple, it shows the stored energy in different fixed periods. You will not find the period comparisons or far-reaching analyzes here.

Technical data and impressions from Growatt Noah 2000

Growatt Noah 2000: Conclusion and alternatives

The Growatt Noah 2000 is a solid energy storage that convinces in addition to a few small weaknesses. The possibilities of smart performance control and the expandability make it a perfect addition to existing balcony taps. Such smart and inexpensive solutions are needed on the market. This is the only way to provide it in a prompt, extensive and without great bureaucracy to provide households with clean and cheaper energy.

Alternative: Anker Solix Solarbank 2 E1600 Pro

Growatt announces the competition with his memory. Other systems with similar performance are usually more expensive, often cost 900 euros and more. Anyone who wants a simpler facility is, for example with the memory Anker Solix 2 Pro (approximately 999 euros) well advised.

Price and availability

The Growatt Noah 2000 has been on the market since spring 2024. It now only costs 510 euros – and is therefore cheaper than usual competitive systems.

Buy Growatt Noah 2000 from Aldi & Co. in the set

In the The discounter Aldi online shop The Growatt Noah 2000 came on offer on March 2, 2025 as a complete set with solar modules. For 849 euros there was the memory with Growatt inverters and two solar modules. This deal was quickly out of print. In the meantime (as of March 28, 2025) it only runs in the package with four modules for 1,099 euros. As Aldi told us, the packages of the installation code are included.

Solakon balcony power plant onlite with 880 watts

The price includes shipping (59 euros). If you need a bracket for the solar modules, you pay 100 euros extra. The Growatt Noah 2000 memory is available for 600 euros.

The cheapest alternative for everyone who only needs two modules: buy the growatt memory and the balcony power plant individually.

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