The name Gigafactory comes from the word Giga, the unit of measurement representing billions. A Gigafactory is a term coined by Tesla founder Elon Musk to describe his first high-volume plant for producing lithium-ion electric battery cells, deep in the Nevada desert.

Graphite is a grey crystalline allotropic form of carbon which occurs as a mineral in some rocks and can be made from coke. It is used as a solid lubricant, in pencils, and as a moderator in nuclear reactors. Graphite also often goes into batteries for electric vehicles. Lithium-ion batteries use graphite anodes because they cope well with the flow of lithium ions during charging and discharging. There are three main types of graphite: Flake, Vein, and Amorphous

Green ammonia is produced by ‎combining green hydrogen and nitrogen (from the air). Ammonia can be utilised as a hydrogen ‎carrier, providing advantages over transporting pure hydrogen.‎

Green hydrogen is made by using a process called electrolysis to split water into hydrogen and oxygen. If that process is powered by a renewable energy source, such as wind or solar power, then the hydrogen is referred to as being green. Green hydrogen is produced from the electrolysis of water, using renewable energy. It can be used ‎as a fuel and energy source in hard-to-decarbonise industries. 

Grey hydrogen is the most common form of hydrogen, it's created from fossil fuels and the process releases carbon dioxide which is not captured.