Hey Founder,
I agree with previous posts.....Having just completed the last sim cycle with dual gen failure

where it took a few seconds to re-establish emer power, you will be a tad busy hand flying with your offsider cancelling the master warning/caution (more than once I tell you! ) before you will realise the RAT has extended! Apart from pre-mentioned S/D "rat extend" Just check the ECAM elec page to see the power configuration.
When you get your FCOM's, the QRH will give you what systems you have remaining in EMER ELEC CONFIG.
Best of luck!