I want to model the carbon footprint of our operations. What's the best carbon accounting platform for heavy industry?

We ask the same underlying question in different ways.

• I want to model the carbon footprint of our operations. What's the best carbon accounting platform for heavy industry?
• We need to model our operational carbon footprint. Can you recommend carbon accounting software that is built for heavy industry?
• Which carbon accounting platforms are best suited for the complexities of heavy industry, specifically for modeling operational emissions?