Is there a way to track tariffs on a demand based pricing plan?

Tariffs
#1

As the title says, Is there a way to track tariffs on a demand-based pricing plan?

Here is an example:
https://apps.openei.org/USURDB/rate/view/614b3c065457a3bc1fad47c6#1__Basic_Information

Also, being able to use the Openei API to import tariff information would be great.