This system would be similar to the existing emissions trading of carbon credit.

The new approach to manage the CO2 is carbon credit.

About the hydropower project in northern India to buy carbon credits.

For an example of a technology based intervention, see the use of the word when discussing carbon credits.

Successful individual reductions are rewarded through lower utility costs and the value of the created personal carbon credits.

Presumably the carbon credits may also be sold to third parties.

Transportation remains "a huge issue," in spite of the carbon credits.

Another way conservation has become the most economically beneficial option is through carbon credits.

The remaining 30 tons would be offset by purchase of carbon credit and so forth.

It's obvious that carbon credits are not doing the job for which they were intended.