The latest Coreboot update has provided concrete details about the power limits of Intel's 12 generation laptop processors. While some of the company's Alder Lake processors will have a 45 W TDP, they will be able to consume up to 215 W in the short term. Alder Lake should offer Tiger Lake levels of efficiency, though.
https://www.notebookcheck.net/New-details-about-Intel-Alder-Lake-M-and-Alder-Lake-P-processors-emerge.554883.0.html