Environmental Groups Environmentally-focused allowance buyers may be interested in contacting an organization that specifically acquires and retires allowances, preventing them from being used to cover SO2 emissions. The certificates may also be purchased as a gift for someone else. The Acid Rain Retirement Fund accepts donations and educates kids about acid rain. See the list below for contact information. Yet another option is an allowance broker.
Brokers bring together parties that have allowances to buy and sell.
Brokers are more appropriate for higher-volume allowance transactions. The following list represents the brokers and traders that we know about and does not represent an EPA endorsement in any way. If you're a broker or trader and would like to be added to the list, please let us know. Contact Information for Obtaining SO2 Allowances All of the links below take you out of EPA's Web site, so we can't guarantee the accuracy of the information they present. The second table lists organizations that are only involved in retiring allowances to benefit the environment.