Distributed. New transmission lines have big nimby issues, and many existing corridors are already getting overloaded. There are recurring attempts to reform the permitting process (in the last Congress it was called EPRA/energy permitting reform act), but… we’ll see.

Bureaucracy is the main thing holding back clean energy right now, rather than economics. You can see this in how Texas, which has lax grid regulation but isn’t biased towards clean energy has far surpassed CA, which subsidizes and got a big head start, in wind/solar generation in a few years.