Let’s start with the ABCs: what are inertia services on an electricity grid? Even before that, what is inertia in a grid setting? Most of us should remember “inertia” from our younger years in primary school. Inertia is an object’s natural inclination to just keep moving (if it weren’t for friction) or just keep sitting still if that object is not moving. But on the surface, that’s confusing in terms of electricity, until you think a bit about how electricity is generated in old-school thermal power plants. I’ll let the UK’s National Grid ESO explain:
“Many generators producing electricity for …
