<PAGE>


                                OPTION AGREEMENT

         This Option Agreement ("Agreement") is made this August 13th of 2003 by
and  between  Composite  Technology  Corp  ("the  Company")  and Brent  Robbins,
("Robbins"), of 1000 Campanile, Newport Beach, California 92660, USA.

                   WHEREAS, under that certain employment agreement ("Employment
Agreement") between the parties, the Company has agreed to provided Robbins with
options to acquire  Company  shares under its share option plan ("Option  Plan")
and in satisfaction  of its  obligations  under the Option Plan, the Company has
granted  to Robbins  an option to  purchase  seven  hundred  and fifty  thousand
(750,000)  shares  of the  Company's  common  stock,  subject  to the  terms and
conditions of this Agreement.

         NOW, THEREFORE, the parties agree as follows:

1.       Option

         The  Company  grants to Robbins  the right to  purchase  ("Option")  an
aggregate of seven hundred and fifty thousand  (750,000) shares of the Company's
common stock  ("Shares")  at the price set forth in Section 4 below.  The vested
portion  of the  Option  may be  exercised  at any  time,  whether  in a  single
transaction  or in  multiple  transactions,  and in the amounts and at the times
determined by Robbins.

2.       Vesting

         50,000  shares  under  the  Option  shall be  vested on the date of the
signature of the present  Agreement and,  subject to Sections 3 and 7 below, the
remaining  700,000  shares  under the  Option  shall  vest at the rate of 35,000
shares under the Option (one twentieth of the balance  granted under the Option)
vesting per quarter. The first 35,000 options of the unvested portion shall vest
on October 1st, 2003 and thereafter each  successive  vesting shall be effective
on  the  first  day  following  the  end of  each  successive  calendar  quarter
thereafter until all the options are vested.

         The vested portion of the Option shall be nonforfitable,  and shall not
be  affected  by the  termination  of the  Employment  Agreement,  the  death or
disability of Robbins,  or for any other reason.  Notwithstanding the foregoing,
if the entire  portion of this Option has not been  exercised as of December 31,
2011, the unexercised portion shall lapse and shall be of no force or effect.



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<PAGE>


3.       Effect of Termination of Employment Agreement

         If Robbins  voluntarily  terminates  the Employment  Agreement  without
cause,  or if the Company  terminates the Employment  Agreement due to Robbins's
breach,  then as of the effective date of such  termination the unvested portion
of the Option shall terminate and shall be of no force or effect. This paragraph
shall not apply to any voluntary  termination by Robbins as a result of a Change
in Control specified in Section 7 below.

         If the Company voluntarily  terminates the Employment Agreement without
cause,  or if Robbins  terminates the Employment  Agreement due to the Company's
breach, or if the Employment  Agreement is terminated due to death or disability
of Robbins,  then as of the  effective  date of such  termination  the  unvested
portion of the Option shall be immediately and fully vested.

         The  termination  of Employment  Agreement  shall not affect  Robbins's
right to exercise the vested portion of the Option at any time prior to December
31, 2011.

4.       Purchase Price

         The purchase price for each Share subject to the Option  (including any
additional Shares granted to Robbins under Section 8 below) shall be $0.53.

5.       Manner of Exercise

         If at any time Robbins elects to exercise all or any part of the vested
portion of the  Option,  it shall so notify  Company in  writing.  Such  written
notice  shall  specify  the  number  of  Shares  to be  purchased,  and shall be
accompanied  by cash or a check equal to the full purchase  price for all Shares
purchased.  "Full  purchase  price"  means  the  per-share  price in  Section  4
multiplied by the number of Shares purchased.

6.       Issuance of Certificates

         As soon as practicable after the exercise of any portion of the Option,
the Company  shall  deliver to Robbins a  certificate  evidencing  the Shares so
purchased.  Upon such  delivery  Robbins  shall  have all  rights,  powers,  and
interests  of a  shareholder  of the  Company  with  respect  to the  Shares  so
acquired.

7.       Change in Control

         Notwithstanding Section 2 above, in the event of a Change in Control of
the Company the unvested  portion of the Option  shall be fully and  immediately
vested as of the earlier of (i) the date any proposed Change in Control has been
approved by the Company's board of directors, whether or not all of the terms of
such  transaction  have been  determined,  (ii) the date  Change in Control  has
actually  occurred,  or (iii) the occurrence of an event specified in subsection
(c) below.


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<PAGE>

         As used herein, "Change in Control" shall mean any of the following:

                  (a)      The sale or transfer of more than fifty percent (50%)
                           of the  assets of the  Company,  whether  in a single
                           transaction or a series of  transactions  during a 12
                           months period.

                  (b)      The sale or transfer  to any person or Common  Group,
                           or  acquisition  by any  person or Common  Group,  of
                           twenty  percent  (20%)  or  more  of the  outstanding
                           common  stock  of the  Company,  whether  in a single
                           transaction  or a  series  of  transactions.  "Common
                           Group"  means five or fewer  persons  related in some
                           manner.  This  subsection  shall  not apply to common
                           stock  acquired  by C.  William  Arrington  or Benton
                           Wilcoxon.

8.       Nonalienation.

         Neither of the Option nor any  rights  thereunder  may be  transferred,
assigned,  pledged or  hypothocated  in any way,  whether by operation of law or
otherwise, and shall not be subject to execution, attachment or similar process.

9.       Entire Agreement

         This  Agreement  represents  the entire  agreement  of the parties with
respect  to  the  subject   matter   hereof,   and   supercedes   any  prior  or
contemporaneous written or oral agreement with respect thereto.

10.      Choice of Law

         This  Agreement  shall  be  governed  by  the  laws  of  the  State  of
California.

11.      Amendment

         This Agreement may be amended only by a writing executed by the parties
hereto.

12.      Attorney's Fees

         In the event either party incurs legal expenses to enforce or interpret
any  provision  of this  Agreement,  the  prevailing  party shall be entitled to
recover its legal expenses, including, without limitation, reasonable attorney's
fees, costs and necessary disbursements in addition to any other relief to which
such party shall be entitled.

         (Space left Blank)


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<PAGE>


         In WITNESS WHEREOF, the parties have entered into this Agreement on the
date first above written.


COMPOSITE TECHNOLOGY CORPORATION

By:
         --------------------------------------
         Benton H Wilcoxon, Chairman and CEO

By:
         --------------------------------------
         Brent Robbins



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