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80% self-consumption with a 99.9 kWp roof-top system
The biggest electricity load at the retailer is the cooling system in the warehouse. However, it is possible to cover 40% of the energy requirements with solar energy thanks to the roof-mounted PV system. “The PV system is ideal for us. We require a particularly large amount of electricity for cooling when the sun shines, so it makes sense to use the energy for our own load consumers,” says managing director Gerhard Pichler. “The investment costs for the system will be recouped in 5 to 6 years.”
Payback period: less then 6 years
Three of the company cars are electric vehicles from different manufacturers. They are charged using the Keba wallboxes installed on the premises. Naturally, the electricity comes from the company’s roof-mounted PV system.
“Switching to electric cars is worth it in many respects. For one, in Austria we don’t pay any benefit in kind. Secondly, we can charge the vehicles with our self-generated energy, increasing our rate of self-consumption. And thirdly, they’re a really fun way to get around,” adds Gerhard Pichler.
|Size of installation||99.9 kWp|
|System type||Photovoltaic roof-top installation|
|Inverters||1 Fronius Symo 6.0-3-M, 3 Fronius Eco 27.0-3|
|Solutions for e-mobility||Keba Wallbox integrated in the system
|Annual yield||Approx. 100,000 kWh|
|Self-consumption rate||Approx. 80%|
|Self-sufficiency rate||Approx. 40%|
|CO2 savings / year||53 tonnes|
|Energy cost saving / year||Approx. 10,000 euros|
|Payback period for the system