194MWh would be a lot for you but it's not enough for this context. Suppose it's dark for just 10 hours. 194MWh over ten hours is 19.4MW which is enough to power a small town.
The primary purpose of that Tesla battery is to manage short-term discrepancies, it can do 200MW power output for ten minutes without problems and that's enough time for relatively slow standby systems to spin up.
To give a comparison hydro storage systems of 10GWh (almost two orders of magnitude more) are totally a thing. Why didn't Australia buy one of those? Well the problem is geography, the hydro storage needs a mountain because what it's really storing is gravitational potential energy, and er, that bit of Australia is a bit flat.
The primary purpose of that Tesla battery is to manage short-term discrepancies, it can do 200MW power output for ten minutes without problems and that's enough time for relatively slow standby systems to spin up.
To give a comparison hydro storage systems of 10GWh (almost two orders of magnitude more) are totally a thing. Why didn't Australia buy one of those? Well the problem is geography, the hydro storage needs a mountain because what it's really storing is gravitational potential energy, and er, that bit of Australia is a bit flat.