Residential Rooftop Ennepetal

Site Overview
Location Ennepetal, Germany
Coordinates 51.3° N, 7.36° E
Average global irradiance 987 kWh/m2/yr
Average temperature 10.4 °C, 50.7 °F
Average precipitation 860 mm/yr, 33.9 in/yr
Technical Overview
Date onstream July 2013
PowerSet 2 x PowerSet 6.9, 1 x PowerSet 3.0
System capacity 16.8 kWp
Panel type SF165-S (165 W)
Numer of installed panels 102
Tilt angle, orientation 20°, -85° E/ 95° W
Expected output 14,600 kWh/yr
CO2 reduction 12,000 kg/yr, 26,456 lbs/yr
Inverter 5 x SF-WR-3000
Financing Bank
Private Investment

lean solar GmbH is a system provider in solar and renewable energy concepts. They offer custom-made energy consulting and individual solutions for environmental energy generation and cost reduction. As a “one-stop” provider they can pass significant benefits and costs transparently to their customers.From planning to commissioning, lean solar GmbH remains the sole contact for customers.

On both sides of a roof of a semi-detached house in Ennepetal, North Rhine-Westphalia, three Solar Frontier PowerSets in total were installed. The east-facing roof provides space for two 6.9 kWp PowerSet of 42 modules each and on the small west-facing roofside a 3 kWp PowerSet of 18 modules. The plant of 16.8 kWp total capacity is expected to produce 14,600 kWh of electricity annually and thus offset about 12,000 kg of CO2 emissions per year.

Thanks to the precisely matched components of the PowerSets, consisting of inverters, modules, connecting cables, DC-Cables, plugs and sockets – the installation of PowerSets was very easy. Each PowerSet can be installed in many different ways including in places where nearby objects partially shadow the panels. The challenge of this roof was in the east-west orientation. Thanks to good low-light behavior, the CIS thin-film modules also work in the early morning and the late evening hours, leading to a higher output generation compared to other modules.