Post #1883143

2023-06-04 10:15 UTC

Enter batteries. Here, we use the term for electro-chemical assets which can both consume (charging) and produce (discharging) power. But they charge/discharge DC, so, like with PV power, you need to connect a string of batteries to your (AC) grid through an inverter which converts between AC/DC. The combination of a string of batteries and an inverter is often called an "AC battery" and usually controlled as a singular asset. Like combustion generators, battery inverters are grid-forming.

Replies (2)

@sbi@toot.berlin 2023-06-04 10:21

Important properties are their lifetime (energy capacity decrease after a number of charging/discharging cycles), the amount of energy they can store, the power they can charge/discharge with, and their power/energy ratio, the C rate. The properties of the inverter and the battery chemistry are responsible for all these factors. Currently, mostly Lithium ion batteries are connected to grids. They provide high C rates and less energy capacity decrease per charge cycle than other batteries.

Open ##1883144
@albonycal@fosstodon.org 2024-04-07 11:28

@sbi There's also this which can be used https://en.wikipedia.org/wiki/Pumped-storage_hydroelectricity Which is a "battery" that stores the potential energy which can be converted back to electricity when needed

Open ##1883184