![Utility Green Pricing](https://webarchive.library.unt.edu/eot2008/20090512221944im_/http://apps3.eere.energy.gov/greenpower/images/gpn_main_pricing.gif)
Green pricing is an optional service or tariff offered by utilities to customers in regulated electricity markets.
![Green Power Marketing](https://webarchive.library.unt.edu/eot2008/20090512221944im_/http://apps3.eere.energy.gov/greenpower/images/gpn_main_marketing.gif)
Green power marketing refers to selling green power in competitive retail and wholesale electricity markets.
![Reneweable Energy Certificates](https://webarchive.library.unt.edu/eot2008/20090512221944im_/http://apps3.eere.energy.gov/greenpower/images/gpn_main_certs.gif)
Renewable energy certificates represent the environmental attributes of electricity produced from renewable energy sources sold separately from commodity electricity.
![Greenhouse Gas Offsets](https://webarchive.library.unt.edu/eot2008/20090512221944im_/http://apps3.eere.energy.gov/greenpower/images/gpn_main_carbon.gif)
Greenhouse gas (GHG) offsets are tradable certificates representing units of GHG emission reductions.
![State-Based Policies](https://webarchive.library.unt.edu/eot2008/20090512221944im_/http://apps3.eere.energy.gov/greenpower/images/gpn_main_state.gif)
A number of states have enacted policies requiring fuel mix disclosure or net metering, or mandating that electricity suppliers provide green power options.
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