Storage advice: Use electricity storage for companies and industry efficiently

1/7/19, 5:00 PM -

To store solar electricity in large-scale batteries it is important to take heed of charging currents – and to switching currents when in case the grid fails.

Final assembly of a commercial energy storage system at Tesvolt's factory in Wittenberg near Berlin.

The commercial storage market is clearly gathering steam. The reason: Falling prices for panels is making PV more attractive. The prices for entire storage systems are also coming down. There is a clear demand for robust systems consisting of tried and tested components.

Often, what is called for is emergency power supply for a company, a hotel or a hospital in case of grid failure. In such a case, it is worth looking at commercial storage units above 15 kilowatt hours in capacity, with no real upper limit. Large industrial companies or utilities have been known to set up battery containers of 10 megawatt hours in capacity – and even more.

Need for further clarification

Storage units in commercial settings are financed differently from privately-owned domestic storage, especially, because cogeneration units and wind turbines are often installed alongside PV. An uninterruptable power supply (UPS), commonly referred to as emergency power, is a key feature when many companies are planning their storage.

Many potential users are beginning to get very interested in the topic. The price for solar panels has fallen to significantly below 40 eurocents per watt. And the prices for lithium batteries are also coming down, slowly reaching those of lead storage.

Precise calculation required

In contrast to smaller domestic units for private customers, when the technology is used in a commercial or municipal setting, a precise calculation is required. Cookie cutter solutions are rarely called for and also make very little sense. Every project should be assessed and planned individually.

Most suppliers and retailers of commercial storage offer to support their B2B customers in planning and designing large-scale storage solutions. (HS)

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