Mastio Natural Gas Marketer Customer Satisfaction Study Summary

Mastio and Company would like to thank you for your participation in our
recently published Natural Gas Marketer Customer Satisfaction Study Fifth
Edition. Please visit our web site at www.mastio.com/index/mk5index.html
which shows the customer satisfaction indexes for the Mega Marketers and the
Mid-Tier Marketers.

If you have any questions on the enclosed materials, have further interest
in this study or the other studies we publish, or you are interested in
finding out how to obtain the full report, please call us at (816) 364-6200
or visit us at www.mastio.com.

Thank you again for your participation and we look forward to speaking with
you on future studies.

Best Regards,

MASTIO & COMPANY