About Home energy storage field data
Here we present real-world data from 21 privately operated lithium-ion systems in Germany, based on up to 8 years of high-resolution field measurements. We develop a scalable capacity estimation method based on the operational data and validate it through regular field capacity tests.
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About Home energy storage field data video introduction
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6 FAQs about [Home energy storage field data]
Can a multi-year field measurement predict the battery capacity of home storage systems?
The multi-year field measurements provide insight into the operation of home storage systems. We subsequently developed a method for estimating the usable battery capacity of home storage systems tailored to their operational patterns.
Is there a capacity estimation method for battery energy storage?
Now, a large open-access dataset from eight years of field measurements of home storage systems is presented, enabling the development of a capacity estimation method. The global battery energy storage market has grown rapidly over the past ten years.
Can a lithium-ion home storage system be measured in a field?
To validate this method, we performed a total of 60 field capacity tests over the lifetime of 18 systems (Fig. 1a,b). To the best of our knowledge, there are no comparable multi-year field measurements of lithium-ion home storage systems. Fig. 1: Field capacity tests and validation of the capacity estimation method.
Are home storage systems the future of battery energy storage?
The global battery energy storage market has grown rapidly over the past ten years. Home storage systems have made an important contribution to this growth, representing one way for the public to participate in the energy transition.
How valuable is a field measurement dataset?
This paper contributes to both by analysing field measurements of 21 HSSs over a measurement period of up to 8 years. The dataset is, so far, valuable for a scientific dataset in terms of measurement duration and sample rate. It consists of 106 system years represented by 14 billion data points.
How much capacity does a home storage system lose per year?
We find that the measured home storage systems lose about 2–3 percentage points of usable capacity per year on average. Most systems still reach their given warranty period, owing to the inclusion of an ageing reserve in the capacity (that is, more capacity is installed than stated in the datasheet).