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1x balcony power plant SETBDM8002420

SKU: SETBDM8002420

  • Balcony power plant with 1 x NEP BDM800 micro inverter
  • 2 x 420 Wp modules = 840 W
  • Incl. 1 x 5 m connection cable
  • Up to 178,- € electricity cost savings per PV module*
  • Up to 400,- € subsidy possible**
Mounting System for 2 modules 
from 339,99 €

incl. 0% VAT , plus shipping costs

Manufacturers recommended retail price: 519,99 €
Available immediately


For Austria: With the purchase of the VAT-exempt product, the customer confirms that all conditions for the application of the zero tax rate according to § 28 para. 62 UStG 1994 are fulfilled.

For Germany: By sending the order, the ordering person declares that the conditions according to the Value Added Tax Act §12 para. 3 are fulfilled. According to this assumption, the stated final price includes 0% VAT. For buyers who do not fulfil the conditions according to the Value Added Tax Act §12 Para. 3, the stated price includes 19% VAT.


This balcony power plant consists of the BDM800 inverter from NEP with 5 m connection cable and plug as well as the high-performance solar module SP420-03BI from KKT KOLBE. You thus receive a plug-in, fully-fledged balcony power plant that leaves nothing to be desired. A suitable and easy-to-install mounting system can be ordered as an Option.

Micro inverter 800 W WiFi NEP BDM800

The NEP BDM800 is the ideal micro-inverter for balcony power plants. It converts PV power generated by balcony power plants or rooftop systems in conformity with the grid and feeds it directly into the domestic grid, where it is then used immediately. This inverter is mounted directly under a PV module and is only responsible for the connected modules. Through MPPT technology (Max Power Point Tracking), the power of your photovoltaic panels is optimally utilised. Since the connected module power per inverter may be 1200 W, a high output power can be generated more or longer in combination with e.g. 2 x 440 W modules than if 2 x 300 W modules are connected. Please note that additional solar cables are not included and must be ordered separately. It is also very important that you make sure to provide the correct phone number for the shipping company to ensure your delivery goes smoothly.

The micro-inverter converts direct current from connected PV modules into alternating current and can be directly integrated into the circuit. The electricity fed into the grid is thus used immediately and reduces the amount of electricity drawn from the public grid.

Information video about this NEP inverter.

Downgrade to 600 W

Experience more power and flexibility with the NEP Downgrade function, which makes it possible to reduce the output power of your micro inverter from 800 W to 600 W using the NEPViewer app. This solution is particularly attractive as it allows for easy retrofitting without an electrician when the VDE standard soon allows inverters with 800 W output power. Use the full potential of your solar system and optimise energy production effectively and easily in the future. This feature offers you more efficiency and autonomy, all without additional hardware or complex installations.


The electronics of the NEP micro-inverters are state-of-the-art and already offer integrated energy measurement via app and WiFi. For this purpose, you can integrate the inverter into your home WiFi and monitor the energy generation via smartphone. The maximum continuous input current (DC) is 2 x 17A, so that the NEP micro inverters are already equipped for solar modules up to 600W.

VDE certified

The micro-inverter is certified according to VDE-AR-N-4105:2018 and may be legally operated in Germany. It includes NA protection and thus switches off immediately when disconnected from the mains.


The NEP BDM800 is built into a robust die-cast aluminium housing with excellent heat conduction properties. Due to its location directly under solar modules, good thermal management is important for the longevity of micro-Inverters.


The inverter is dust-proof, submersible against water (IP67) and can be mounted directly on the solar module or mounting profile. The connection is very simple with a plug connection. If you wish to operate the system with a Wieland plug and feed-in socket, you have the option of purchasing these separately from a retailer and having the plug converted by a qualified electrician.

High performance

The NEP micro-inverter achieves an efficiency of up to 96.5% and offers fast separate MPPT tracking for each solar module. This enables optimal yield even when the modules are partially shaded and in all weather conditions.

Integrated WiFi

A WiFi module is integrated for easy monitoring. The inverter connects to your home WLAN network and records the current power. With the NEPViewer app, you can then track the generation live and visualise and analyse it over time. So no other devices are needed to measure energy!

Mounting material is not included in the scope of delivery

Depending on availability, the model offered or an identical model with a different designation may be supplied.

The product meets the requirements of VDE-AR-N 4105:2018, among others.

Technical data

Input power

  • Number of MC4 connections: 2 sets
  • Maximum input power: 2 x 600 W
  • Maximum input voltage: 60 V
  • Maximum input current: 2 x 17 A

Output power

  • Peak efficiency: 97.3 %
  • Maximum output power: 800 W
  • Nominal output voltage: 230 V
  • Nominal output current at 230 V: 3.26 A
  • Output frequency: 50 Hz / 60 Hz


  • Operating temperature: -40°C to +65°C
  • Length: 4.2 cm
  • Width: 25 cm
  • Height: 26.8 cm
  • Weight: 2.9 kg
  • Protection class: IP-66, IP-67
  • Warranty: 10 years
  • Connection cable: 5 m included

KKT KOLBE High Performance Solar Module SP420-03BI

This bifacial premium PV module with 420 Wp output and a module efficiency of 21.51% offers a better energy yield than modules with lower efficiency even in low light conditions.

The back of the module is made of tempered glass, so both sides of the module can generate electricity. This is particularly advantageous when installed as a photovoltaic fence, carport or terrace roofing or noise barrier, etc.

Thanks to the high performance and efficiency, you save up to 178,- EUR electricity costs per panel per year.

High load capacity and minimal losses due to shading. The SP420-03BI are N-type modules.

The solar module's low temperature coefficient of -0.25% guarantees optimum power output even on hot days.

The excellent anti-PID performance through optimised production processes and strict quality control prevents power losses in humid weather.

Due to the "Hot-Spot-Protect" quality assurance process, all cells of the module are guaranteed hot-spot free.

The PV panel is 172.2 cm long, 113.4 cm wide and 3 cm high. The front and rear panels made of tempered glass with anti-reflective coating and the robust anodised aluminium frame ensure best stability, even in strong winds (up to 2400 Pa) and heavy snow loads (up to 5400 Pa). The module can be securely mounted using standard mounting systems. The mounting system is not included in the scope of delivery.

Modules can be easily connected to each other with the MC4 connector system.

Delivery is by forwarding agent free kerbside (the modules are not carried into the home). The forwarding agent will contact you via e-mail to arrange a delivery date with you.


  • Depending on availability, the model offered or an identical model with a different designation may be delivered.
  • Due to the currently very high demand, this item is usually sold out before goods receipt.
  • Pre-order now at a favourable price and benefit from the relatively low purchase costs at present. The price may be higher at a later date.

Technical data PV module SP420-03BI

  • cell type: MBB half cells, monocrystalline
  • Arangement of cells: 108 (6 x 18)
  • Module size: 172.2 x 113.4 x 3 cm
  • Weight: 24.5 kg
  • Nominal power: 420 Wp
  • Nominal voltage: 31.7 V
  • Nominal current: 13.25 A
  • Open-circuit voltage: 38.32 V
  • Module efficiency: 21.51 %
  • Outer panes: Toughened glass on both sides with anti-reflective Coating
  • Frame: anodised aluminium black
  • Connection: MC4 compatible
  • Operating temperature: -40 °C to +85 °C
  • Temperature coefficient Pmax: -0.30 %/°C
  • Temperature coefficient Voc: -0.25 %/°C
  • Temperature coefficient Isc: +0.046 %/°C
  • NMOT: 45 °C
  • Product warranty: 15 years
  • Performance guarantee: 30 years

You still need a mounting system? The following mounting systems are available:

SPMS01 Tiled roof mounting set for 1 module

SPMS02 Tiled roof mounting set for 2 modules

SPMS03 Adjustable mounting for 2 modules

SPMS04 Adjustable mounting Flat roof for 2 modules

SPMS05 Adjustable mounting Flat roof for 2 modules black

SPMS06 Tiled roof mounting set horizontal for 2 modules

SPMS08 Sheet metal roof mounting set vertical for 2 modules

BALKON10 Balcony Assembly Set for round railings

BALKON2E Balcony Assembly Set for angular railings

How do I compare prices for balcony power plants?

The purchase price of balcony power plants is calculated in watts.

Example balcony power plant from KKT KOLBE:

Purchase price: 599.99 €
Output: 850 Wp
Calculation: 599.99 € / 850 Wp ~ 0.71 €/Wp

Competitor balcony power plant:

Purchase price: 799.99 €
Output: 770 Wp
Calculation path: 799.99 € / 770 Wp ~ 1.04 €/Wp

Pay attention to the price per watt peak (€/Wp), competitors are often 30 - 50 % more expensive.

*The annual savings per panel were calculated on the basis of an output of up to 445 kWh per year and an energy price of 40 cents/kWh with optimal module orientation. With higher or rising electricity prices, the savings per photovoltaic module increase.

**For the exact amount of subsidies and possible conditions, please contact your local government or advice centres.

Information video on the subject of balcony power plants

Information video on registration in the Market Master Data Register (MaStR)

Balkonkraftwerke einfach erklärt


Main Colour: Black
Power: 701-800 W
Features: Monokrystallin
Cell type: Monocrystalline
Connector: MC4 compatible
Inverter technology: Microinverter
Connection type: MC4
Pliability: Firm
System configuration: On Grid


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