I'm buying carbon credits to cover the power usage at our hosting facility, because it is the only way I have to encourage the creation of zero carbon power sources through my purchasing power. We rent space at the facility, so I have no control over the utility vendor selection.

I think that carbon credits were designed for exactly that sort of situation, to create a proxy which restores the price communication between the purchaser and supplier, in situations where there is a third party in the middle who is not communicating a green power preference.

They're not perfect, but I agree with you, the advantages are significant.

We're happy to be able to offer 100% zero carbon green Linux hosting.