Quick Answer
Open the Control room, then follow the generator cables to charge the batteries. In We Were Here Tomorrow, Office Area and Power Restoration takes you from the office mechanisms to the Lambda generator network. You and your partner need access to the mechanisms and the generator groups across your separate areas.
How do you reach the office area Control room?
In the office area, you need to activate the mechanisms associated with the lights above the Control room entrance before you can enter. Follow the office area Control room access route for the connected office paths and access requirements.
You enter the office area here, before working toward the Control room.
Shown at 159:41 in Morrigh4n’s video.Where does the Lambda generator network fit into power restoration?
After the office section, the Lambda generator network connects the generator groups that charge the large batteries, with connections spread across both players' areas. Continue with the Lambda generator network when you reach the power cables and need to work out how the groups connect.
Once the batteries are charged, continue to TRC and Symbol Synthesis.
FAQ
Your immediate destination is the Control room, whose entrance depends on the office mechanisms.
Lambda belongs to the generator network you work through to restore power to the large batteries.
Yes. You work through the office section before tackling the generator connections for power restoration.