I'm sure you mean MW. Diablo Canyon supplies about 8.5% of the states energy.
Unlikely, 2.2MW is pretty much nothing, it's the nameplate capacity of a single relatively large wind turbine (but not a huge one, the current record-setter is the 8MW Vestas V164). Even in SMR few commercial design go that low, there's only ABV (3~10MWe) and the quite odd ELENA effort (68kWe), but most designs are 2~3 digits electrical.
Diablo Canyon has a nameplate capacity of 2240MWe over two reactors, which is about 2.2GW.