Technology
This is the battery chemistry for starting gasoline vehicles
What is lead-acid?
State with most grid-scale battery storage in the US
What is Cali?
This is the typical unit of measurement for power
Whats a watt?
This chain reaction causes lithium-ion batteries to overheat and potentially catch fire.
What is thermal runaway?
Name three types of grid energy storage
Pumped Hydro, Batteries, Flywheels, Compressed Air, Thermal Energy
This family of battery chemistry is most commonly used in electric vehicles and grid-scale storage today.
What is a lithium-ion battery?
This time period represents the peak discharge time of battery storage on the grid.
This term describes the percent of electric energy in during charging to electric energy out during discharging.
What is Round-trip-effiency
This metal, often mined in the Democratic Republic of Congo, is used in many lithium-ion batteries.
What is cobalt?
the predominant mode of energy storage on the grid in the US
This is the method of energy storage for batteries
What is electrochemical?
how batteries are able to generate revenue on the grid
what is arbitrage (buy low, sell high)?
This term describes how many times a battery can be charged and discharged before degrading significantly.
What is cycle life?
This system monitors voltage, temperature, and current to prevent battery failure.
What is a battery management system (BMS)?
This type of battery is based on an element very close to Li on the periodic (and kitchen) table
What is a sodium ion?
prismatic and cylindical are two types of this battery component
what is a cell
Two reasons battery energy storage is important for renewable energy adoption
Peak Shifting
Reliability
Stabilize Voltage and Frequency
Generate Revenue
Avoid the Need to Scale up Transmission Networks with Peaky Generation
The amount of energy storage (aka capacity, in kWh) in a typical Tesla power wall
What is 13.5 kWh? (would accept 10-15 kWh)
This emerging and now widespread battery chemistry is safer than LiNMC
What is lithium iron phosphate (LFP)?
The round-trip-efficiency of pumped hydro
70-80%
The electrode in a battery that is the "electron donor" during discharge?
What is an annode
This key grid service provided by batteries helps maintain a stable system frequency (around 60 Hz in the U.S.)
What is frequency regulation?
This metric (Wh/kg) describes how much energy a battery stores relative to its mass
What is energy density?
These are three options for reducing need or new mineral mining
What is Recyling, Reuse, Refurbishing
store excess heat or cold in materials like water, molten salt, or rocks for later use
thermal energy storage