Nominal capacity of household energy storage products

What is the difference between nominal capacity and useable capacity?

Nominal or total capacity, described in kilowatt-hours (kWh), is simply the total amount of energy 1 a battery can store. Useable capacity is the amount of energy that can actually be accessed for your use. Using the example of a Sigenergy Sigenstor 5S-13, its datasheet indicates a total capacity of 13.44 kWh, and a useable capacity of 13 kWh.

What is a useable capacity in a home battery system?

Useable capacity is the amount of energy that can actually be accessed for your use. Using the example of a Sigenergy Sigenstor 5S-13, its datasheet indicates a total capacity of 13.44 kWh, and a useable capacity of 13 kWh. But the difference between nominal and useable capacities in home battery systems varies.

Is there a capacity estimation method for home storage systems?

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. You have full access to this article via your institution. The global battery energy storage market has grown rapidly over the past ten years.

What is the difference between nominal and useable battery capacity?

But the difference between nominal and useable capacities in home battery systems varies. The difference is particularly important to understand if trying to claim the federal battery rebate, for which the nominal (total) capacity of 5 kWh to 100 kWh will be eligible, but only the first 50 kWh of usable capacity is discounted.