POWER OF ATTORNEY

I, Karel Huijser, hereby authorize and designate each of Heidi
M. Hoard, Kristin A. Stokes, Timothy P. Phillips, Amy C. Seidel,
Nicole Kroetsch, and Sharon Stuckmayer, signing singly, as my true
and lawful attorney-in-fact to:

(1) execute for and on my behalf, in my capacity as an officer
and/or director of Tennant Company (the "Company"), the Form ID
and Forms 3, 4 and 5 in accordance with Section 16(a) of the
Securities Exchange Act of 1934 (the "Exchange Act") and the rules
and regulations promulgated thereunder;

(2) do and perform any and all acts for and on my behalf which may
be necessary or desirable to complete and execute any such Form ID
and Form 3, 4 or 5 and timely file such form with the Securities
and Exchange Commission, any stock exchange or similar authority,
and the National Association of Securities Dealers; and

(3) take any other action of any type whatsoever in connection
with the foregoing which, in the opinion of such attorney-in-fact,
may be to my benefit, in my best interest, or legally required of
me, it being understood that the statements executed by such
attorney-in-fact on my behalf pursuant to this Power of Attorney
shall be in such form and shall contain such terms and conditions
as such attorney-in-fact may approve in such attorney-in-fact's
discretion.

I hereby further grant to each such attorney-in-fact full power
and authority to do and perform any and every act and thing
whatsoever requisite, necessary, or proper to be done in the
exercise of any of the rights and powers herein granted, as fully
to all intents and purposes as I might or could do if personally
present, with full power of substitutes or revocation, hereby
ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or
cause to be done by virtue of this Power of Attorney and the
rights and powers herein granted.  I hereby acknowledge that the
foregoing attorneys-in-fact, in serving in such capacity at my
request, are not assuming, nor is the Company assuming, any of my
responsibilities to comply with Section 16 of the Exchange Act.

This Power of Attorney shall remain in full force and effect until
I am no longer required to file Forms 3, 4 and 5 with respect to
my holdings of and transactions in securities issued by the
Company, unless earlier revoked by me in a signed writing
delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, I have caused this Power of Attorney to be
duly executed as of this 19th day of August 2008.


Karel Huijser