900W balcony power plant Hoymiles HMS-800W-2T 450W Trina Solar modules

This balcony power plant from Offgridtec offers you a powerful solution with a total output of 900W, allowing you to generate part of your household's electricity requirements yourself. This can significantly reduce your overall electricity consumption costs. The system consists of two high-quality Trina Solar solar modules, each with an output of 450W and featuring state-of-the-art technology. To increase efficiency, it includes an HMS-800W-2T microinverter module inverter from Hoymiles. The set also includes a 10 m long Hoymiles connection cable with a field connector for easy connection.

How does a balcony power plant work?

The Offgridtec balcony power plant is a space-saving solar system consisting of a solar module and a matching Hoymiles micro inverter to feed the generated electricity into the in-house power grid. Ideally, the inverter is attached directly to the substructure of the solar module and connected to the module with the solar connector. The 10 m connection cable is connected via the inverter's battery connection and routed directly to the appropriate socket. No special settings are required to use the solar power generated in the home's power grid. If power is available from other sources in the home, this is used preferentially and supplemented by grid power if necessary.

The complete balcony power plant system includes:

• 2x Trina Solar 450W Vertex S+ dual-glass N-type TopCon solar module
• 1x Hoymiles HMS-800W-2T microinverter module inverter
• 1x 10m connection cable for Hoymiles HMS micro inverter

Trina Solar 450W Vertex S+ dual-glass N-type TopCon

The Trina Solar Vertex S+ (MPN: TSM-450 NEG9R.28) is an effective solar module with an output of 450W that uses monocrystalline TOPCon cells and dual-glass technology. Thanks to multi-busbar technology, it offers improved absorption, low series resistance, improved current dissipation, and reliability. It is certified for extreme wind and snow loads of 5400 - 4000 Pa and features highly transparent, 1.6 mm thick glass with anti-reflective coating. The frame is made of a 30 mm wide, anodized aluminum alloy

Product highlights of the Trina Vertex S+ module

• Multi-busbar technology
• Dual glass design
• High-density cell connection technology
• N-type i-TOPCon cell technology

Technical data

• Power (Pmax): 450 W
• Voltage (Vmp): 44.6 V
• Max. current (Imp): 10.09 A
• Open circuit voltage (Voc): 52.9 V
• Short-circuit current (Isc): 10.74 A
• Operating temperature: -40°C to +85°C
• Max. system voltage: 1500V DC
• Cell efficiency: 22.5%
• Number of cells: 144

Hoymiles HMS-800W-2T

The HMS-800W-2T (MPN: HMS-800W-2T) from Hoymiles is the perfect micro inverter for your balcony power plant. In addition to the integratedWiFi module, this compact, lightweight (only 3.2 kg) device is ideal for solar power production with up to two solar panels with an output of 320 to 540+W each. As with all other micro inverters from Hoymiles, it is suitable for long operating hours and a wide range of PV module applications, as its starting voltage is very low (only 22V) and the DC input range of the operating voltage (16-60V) is extremely wide.

Features

• Integrated WiFi module
• Minimization of the effects of e.g. shading, dust, or aging through MPPT
• High-quality energy generation with high MPPT accuracy
• Optimal system reliability
• Peak efficiency of 96.7%
• High safety thanks to integrated protection functions
• 12-year product warranty—information on warranty conditions can be found here
• Easy installation
• Long service life
• Complies with VDE-AR-N 4105: 2018, EN 50549-1: 2019, VFR 2019, IEC/EN 62109-1/-2, IEC/EN 61000-6-1/-2/-3/-4, IEC/EN 61000-3-2/-3

Optimal reliability

Micro inverter systems are inherently more reliable than conventional inverters. The decentralized design of a micro inverter system ensures that a fault does not cause the entire PV system to fail. Hoymiles microinverters are designed to operate at full power at ambient temperatures of up to +65°C (150°F). The microinverter housing is designed for outdoor installation and complies with protection class IP67.

Technical data

• Recommended module power: up to 320W - 540+W (per module)
• MPPT voltage range: 16-60V
• Switch-on voltage: 22V
• Maximum input voltage: 65V
• Maximum input current: 2*14A
• Maximum input short-circuit current: 2*25A
• Rated output power: 800VA
• Rated output current: 3.48A
• Rated output voltage/range: 230V / 180-275V
• CEC peak efficiency: 96.70%
• Ambient temperature range: -40 - +65°C
• Storage temperature range: -40°C - +85°C
• Dimensions (WxHxD): 261 x 180 x 35.1 mm
• Weight: 3.2 kg
• Housing rating: IP67
• Number of MPPT's: 2

S-Miles account creation

The end user can create the S-Miles account directly. The instructions from Hoymiles can be found in the download area of this article.

Balcony power plants in Germany

There is currently no law or regulation in Germany governing the generation of solar power for purely personal use. The maximum limit of 600W AC PV power is a reserve value which, according to the current VDE standard, can be fed into an existing socket circuit in a house without overloading it. There are no specifications for independent circuits without additional load. All electrical installations should be carried out in accordance with VDE standards. However, the operation of a balcony power plant via a standard Schuko socket is not prohibited. Registration with the Federal Network Agency is mandatory. However, there are no known cases of fines for failure to register balcony power plants, nor are there any insurmountable problems with grid operators. Compliance with and implementation of standards and obligations is the responsibility of the plant operator. A wealth of technical and legal information on this subject can be found on relevant websites.