Backsheet chalking, especially of polyamide backsheet films, doesn’t take long to lead to cracks and then safety shutdowns. Sometimes, though, the period may be much longer or shorter than expected. Assessing the risk and whether on-site repairs offer a long-term solution is currently a topic of strong debate within the PV industry, as Cornelia Lichner from the pv magazine Deutschland team reports.
The smallest of the storage units has a capacity of 4.8 kWh and an output of 1.5 kW. It can be expanded to eight battery modules in steps of 2.4 kWh and has a maximum of 57.6 kWh, and 6 kW, of power.
Electrolyzer manufacturers are in agreement on the goal of rapidly reducing investment costs, mainly through economies of scale. Some are embracing large units, while others are betting on quantity over size. The first approach is attractive for operators of large PV plants, while the latter is better suited to operators of small systems.
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