How do I write a letter to a Member of Congress about significantly reducing energy consumption?

I've posted some links below that may be helpful to you. 
One of them suggests handwriting the letter and sending it by postage rather than merely
emailing it.  This seems to be good advice.

I would also
suggest some of the following tips:

• Refer to
  specific legislation you either endorse or oppose.


• Be as
  clear and specific as possible about your reasons for endorsing or opposing the
  legislation.


• If you have no specific legislation in mind
  but would like to suggest possibilities for future legislation, try to be practical.
  Make suggestions that are affordable and likely to win broad support.
  


• Show that you are familiar with feasible, practical
  solutions to any problem you want Congress to address.
  


• If you have access to some particular source of
  information that you think may be helpful, provide references and/or web
  links.


• Make sure that someone besides you proofreads your
  letter before sending it. Preferably this person should know what constitutes clear
  writing and should know the rules of grammar and
  punctuation.


• Consider this possible model letter:
  http://www.calvert.com/climate-action-congress.html


• Show
  that you are reasonable and are aware of the real-world problems involved in achieving
  the goals you support.


• Indicate ways in which the goals
  you support can be useful in supporting other goals, such as job creation, reducing the
  budget deficit, reducing the size of government,
  etc.


• Here is another link worth looking at, since it
  contains sample letters:
  http://www.efficiencyfirst.org/policy/


• Indicate any
  special expertise you may possess.


• Consider reinforcing
  your letter with phone calls to the relevant offices, especially local
  offices.


• Consult this web site for highly specific
  information about whom to contact:
  http://www.contactingthecongress.org/


• Remember the words
  of former Representative Lee Hamilton in his book Strengthening
  Congress:

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Members of Congress
typically give high priority to responding to letters from constituents, and you will
almost certainly receive a
response.