Form: EFFECT

Notice of Effectiveness

May 24, 2007

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Notice of Effectiveness

Effectiveness Date: May 24, 2007 4:15 P.M.
Form: S-1
CIK: 0001368265
Company Name: Clean Energy Fuels Corp.
File Number: 333-137124