Hi sroyle,
For sake of comparison, the recommended size of a football field is 64,000 square feet (105m x 68m).
MNS has less than a third of a football field.
Even if they took the whole 200,000 square feet under that lease, they would only have about 3 football fields.
Tesla's Gigafactory is 5,800,000 square feet.
Here's a picture to understand the scale (my notes in red):
Tesla'a Gigafactory apparently produces 20 gwh as of 31 July 2018:
https://electrek.co/2018/07/31/tesla-gigafactory-panasonic-battery-cell-production-model-3/
Geez they have a long way to go, and a lot of capital to raise to get there.