UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                  FORM 12b-25

                          NOTIFICATION OF LATE FILING

[ ]Form 10-K    [ ]Form 20-F     [ ]Form 11-K    [X] Form 10-Q    [ ]Form N-SAR

For Period Ended:  9-30-05                                       SEC File Number
                                                                     0-25097

[ ]Transition Report on Form 10-K                                 CUSIP Number
[ ]Transition Report on Form 20-F                                  00764G 10 0
[ ]Transition Report on Form 11-K
[X]Transition Report on Form 10-Q
[ ]Transition Report on Form N-SAR

For the Transition Period Ended: 9-30-05

Nothing  in this  form  shall be  construed  to imply  that the  Commission  has
verified any information contained herein.

If the notification  relates to a portion of the filing checked above,  identify
the Item(s) to which the notification relates:

PART I - REGISTRANT INFORMATION

Full Name of Registrant:

              WORLD ENERGY SOLUTIONS, INC.

Former Name if Applicable:

              ADVANCED 3-D ULTRASOUND SERVICES, INC.

Address of Principal Executive Office (Street and Number)

             3900A 31st Street North

City State and Zip Code

              St. Petersburg, Florida 33714

PART II - RULES 12b-25(b) AND (c)

If the subject report could not be filed without  unreasonable effort or expense
and the registrant seeks relief pursuant to Rule 12b-25(b), the following should
be completed. (Check box if appropriate)

       | (a)  The reasons  described  in  reasonable  detail in Part III of this
       |      form  could  not be  eliminated  without  unreasonable  effort  or
       |      expense;
       |
       | (b)  The subject annual report,  semi-annual report,  transition report
       |      on Form 10-K,  Form 20-F,  11-K or Form N-SAR or portion  thereof,
  [X]  |      will be filed on or before the  fifteenth  calendar day  following
       |      the  prescribed  due  date; or  the  subject  quarterly  report of
       |      transition  report on Form 10-Q, or portion  thereof will be filed
       |      on or before the fifth  calendar day following the  prescribed due
       |      date; and
       |
       | (c)  The  accountant's  statement  or other  exhibit  required  by Rule
       |      12b-25(c) has been attached if applicable.


PART III - NARRATIVE

State below in reasonable  detail the reasons why Forms 10-K,  20-F, 11-K, 10-Q,
N-SAR, or the transition  report or portion  thereof,  could not be filed within
the prescribed period of time.

     Registrant  requires  additional  time to properly  reflect its
     merger with Professional Technical Systems, Inc.


PART IV - OTHER INFORMATION

(1)  Name  and  telephone  number  of  person  to  contact  in  regard  to  this
notification:

                Bruce Brashear               352-336-0800

(2) Have all other  periodic  reports  required under Section 13 of 15(d) of the
Securities and Exchange Act of 1934 or Section 30 of the Investment  Company Act
of 1940  during the  preceding  12 months or for such  shorter  period  that the
registrant  was  required to file such  report(s)  been filed?  If answer is no,
identify report(s). [X]Yes [ ]No

(3) Is it anticipated that any significant  change in results of operations from
the  corresponding  period for the last  fiscal  year will be  reflected  by the
earnings  statements to be included in the subject report or portion thereof?
[ ]Yes [X]No

If so, attach an explanation of the  anticipated  change,  both  narratively and
quantitatively, and, if appropriate, state the reasons why a reasonable estimate
of the results cannot be made.

Name of Registrant as Specified in Charter:   WORLD ENERGY SOLUTIONS, INC.

has caused this notification to be signed on its behalf by the undersigned
hereunto duly authorized.

Date:  November 14, 2005                          /s/ Benjamin C. Croxton
                                                  ---------------------------
                                                  By:  Benjamin C. Croxton
                                                       CEO/CFO

INSTRUCTION: The form may be signed by an executive officer of the registrant or
by any other duly  authorized  representative.  The name and title of the person
signing the form shall be typed or printed  beneath the signature.  If the state
is signed on behalf of the  registrant  by an authorized  representative  (other
than an executive officer),  evidence of the representative's  authority to sign
on behalf of the registrant shall be filed with the form.