Deloitte unveils framework to quantify sustainability's business value

Deloitte is a big company that gives advice to other businesses.

It has created a new plan called 'The RoI of Responsibility.'

For a long time, companies only cared about being sustainable because the rules told them to.

Deloitte says that is not enough anymore.

The new plan helps companies see how taking care of the environment can also help them grow and make money.

Some benefits are easy to see, like saving money on electricity and using less water.

Other benefits take longer, like winning loyal customers and getting better deals from banks.

Deloitte also says companies should plan for the next 5 to 10 years instead of just following today's rules.

One example is a sugar company that made its factories greener, which helped it sell more products to other countries.