The hosting industry is not all that stringent on rules and regulations. Anyone is free to price their services as they see fit and introduce any changes that they want to. Surprisingly, those industries that have got a union or a group of power heads are facing trouble implementing green technology while it is the hosting industry that is better adapted at these changes with no enforcer. Maybe other industries have to take a leaf out of the books of these green web hosting companies.
The industry has put forward unwritten rules that allow firms to qualify for green web hosting companies listing. These rules are more of a method devised by the rating agencies where they rate green companies based on the type of investment into renewable and non-conventional resources they have done. It is such a ranking system that propels many of the hosting firms to upgrade to green status even though such moves incur a high cost.