PROMISSORY NOTE

$300,000.00
May 21, 2011

FOR VALUE RECEIVED, CLENERGEN CORPORATION, a Nevada corporation (hereinafter
referred to as the “Borrower”) promises to pay to the order of TCA GLOBAL CREDIT
MASTER FUND, LP, a Cayman Islands limited partnership, with a mailing address of
1404 Rodman Street, Hollywood, Florida 33020 (together with its successors
and/or assigns, hereinafter referred to as the “Lender”), the principal sum of
THREE HUNDRED THOUSAND AND NO/100 DOLLARS ($300,000.00), together with interest
at the “Stipulated Rate” (as hereinafter defined) on the “Outstanding Principal
Balance” (as hereinafter defined) of this promissory note (this note, and all
modifications, extensions, future advances, supplements, and renewals thereof,
and any substitutions therefor, hereinafter referred to as the “Note”), which
principal and interest shall be payable as follows:

 
(i)
On November 21, 2011, the entire Outstanding Principal Balance, together with
all accrued and unpaid interest and all other sums due and payable hereunder
and/or under any documents now or hereafter securing this Note, shall be due and
payable in full.

The term “Outstanding Principal Balance,” for purposes of this Note, shall mean
that amount which, at any given time, is equal to the sum of THREE HUNDRED
THOUSAND AND NO/100 DOLLARS ($300,000.00), less all principal payments (whether
by prepayment or otherwise) theretofore paid pursuant to this Note.  Interest is
calculated on the basis of a three hundred sixty (360)-day year during the term
of this Note.  This Note is not a revolving Note and no portion of the loan
evidenced by this Note may be re-borrowed once repaid.

For purposes of this Note, the “Stipulated Rate” shall mean the rate of interest
calculated as ten percent (10.00%) per annum.  If all or any portion of the
payments of principal or interest due hereunder are not received by the Lender
within five (5) days of the date such payment is due, then Borrower shall pay to
Lender a late charge (in addition to any other remedies that Lender may have)
equal to the greater of: (i) five percent (5%) of each such unpaid payment or
sum; or (ii) Fifty and No/100 Dollars ($50.00).  Any payments returned to Lender
for any reason must be covered by wire transfer of immediately available funds
to an account designated by Lender, plus a $50.00 administrative fee
charge.  Lender shall have no responsibility or liability for payments
purportedly made hereunder but not actually received by Lender; and Borrower
shall not be discharged from the obligation to make such payments due to loss of
same in the mails or due to any other excuse or justification ultimately
involving facts where such payments were not actually received by Lender.

The Outstanding Principal Balance may be prepaid, in whole or in part, at any
time without premium or penalty; provided, however, upon payment of the this
Note in full, whether at maturity, through prepayment, acceleration, foreclosure
or otherwise, the Borrower hereby agrees to pay loan commitment fees which were
deferred from payment at the origination hereof in the amount of seven and
one-half percent (7.5%) of the original face amount of the indebtedness
evidenced hereby, as same may be increased from time to time.  All payments
hereunder shall be applied first towards costs and expenses, if any, due under
this Note or any other Loan Documents, second towards the payment of accrued and
unpaid interest, and third towards the Outstanding Principal Balance.

All sums payable to the order of Lender hereunder shall be payable in lawful
dollars of the United States of America at the office address of Lender set
forth in the heading hereof, or at such place as Lender, from time to time, may
designate in writing.
 
 
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The indebtedness evidenced by this Note is secured by that certain Stock Pledge
and Escrow Agreement (“Pledge Agreement”) by and between Borrower and Lender
made of even date herewith.  This Note, the Pledge Agreement, and all other
documents and instruments heretofore or hereafter executed in connection with
the loan evidenced by this Note, and all modifications, extensions, future
advances, and renewals thereof, and any substitutions therefor, being herein
collectively referred as the “Loan Documents.” All of the agreements,
conditions, covenants, provisions, and stipulations contained in any of the Loan
Documents which are to be kept and performed by Borrower are hereby made a part
of this Note to the same extent and with the same force and effect as if they
were fully set forth herein, and the Borrower covenants and agrees to keep and
perform them, or cause them to be kept or performed, strictly in accordance with
their terms.

Time is of the essence hereof and if any payment of principal, interest or any
other sums due hereunder are not paid when such payment shall be due and
payable, the amount thereof shall bear interest at the highest non-usurious rate
of interest permitted under the law of the jurisdiction governing this Note (the
“Default Interest Rate”).  The occurrence of any of the following events shall
constitute an “Event of Default” hereunder: (i) the Borrower shall fail to pay
any installment of interest or principal due under this Note when any such
payment shall be due and payable; (ii) Borrower makes an assignment for the
benefit of creditors; (iii) any order or decree is rendered by a court which
appoints or requires the appointment of a receiver, liquidator or trustee for
Borrower, and the order or decree is not vacated within thirty (30) days from
the date of entry thereof; (iv) any order or decree is rendered by a court
adjudicating Borrower insolvent, and the order or decree is not vacated within
thirty (30) days from the date of entry thereof; (v) Borrower files a petition
in bankruptcy under the provisions of any bankruptcy law or any insolvency act;
(vi) Borrower admits, in writing, its inability to pay its debts as they become
due; (vii) a proceeding or petition in bankruptcy is filed against Borrower and
such proceeding or  petition is not dismissed within thirty (30) days from the
date it is filed; (viii) Borrower files a petition or answer seeking
reorganization or arrangement under the bankruptcy laws or any law or statute of
the United States or any other foreign country or state; or (ix) Borrower shall
fail to perform, comply with or abide by any of the material stipulations,
agreements, conditions and/or covenants contained in this Note, the Pledge
Agreement or any other Loan Documents on the part of Borrower to be performed
complied with or abided by.  Upon the occurrence of one or more Events of
Default, the Lender, at its option and without further notice, demand or
presentment for payment to the Borrower or others, may declare the Outstanding
Principal Balance immediately due and payable, together with all accrued and
unpaid interest thereon and thereafter all such sums shall bear interest at the
Default Interest Rate, together with all attorneys’ fees, paralegals’ fees and
costs and expenses incurred by the Lender in collecting or enforcing payment
thereof (whether such fees, costs or expenses are incurred in negotiations, all
trial and appellate levels, administrative proceedings, bankruptcy proceedings
or otherwise), and all other sums due by the Borrower hereunder and under the
Pledge Agreement and the other Loan Documents, all without any relief whatsoever
from any valuation or appraisement laws and payment thereof may be enforced and
recovered in whole or in part at any time by one or more of the remedies
provided to the Lender at law, in equity, or under this Note, the Pledge
Agreement or the other Loan Documents.

Notwithstanding any provision in this Note, the Pledge Agreement or the other
Loan Documents, the total liability for payments of interest and payments in the
nature of interest, including, without limitation, all charges, fees, exactions,
or other sums which may at any time be deemed to be interest, shall not exceed
the limit imposed by the usury laws of the jurisdiction governing this Note or
any other applicable law.  In the event the total liability of payments of
interest and payments in the nature of interest, including, without limitation,
all charges, fees, exactions or other sums which may at any time be deemed to be
interest, shall, for any reason whatsoever, result in an effective rate of
interest, which for any month or other interest payment period exceeds the limit
imposed by the usury laws of the jurisdiction governing this Note, all sums in
excess of those lawfully collectible as interest for the period in question
shall, without further agreement or notice by, between, or to any party hereto,
be applied to the reduction of the Outstanding Principal Balance immediately
upon receipt of such sums by the Lender hereof, with the same force and effect
as though the Borrower had specifically designated such excess sums to be so
applied to the reduction of the Outstanding Principal Balance and the Lender
hereof had agreed to accept such sums as a penalty-free payment of principal;
provided, however, that the Lender of this Note may, at any time and from time
to time, elect, by notice in writing to the Borrower, to waive, reduce, or limit
the collection of any sums in excess of those lawfully collectible as interest
rather than accept such sums as a prepayment of the Outstanding Principal
Balance.  It is the intention of the parties that the Borrower does not intend
or expect to pay nor does the Lender intend or expect to charge or collect any
interest under this Note greater than the highest non-usurious rate of interest
which may be charged under applicable law.
 
 
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The Borrower hereby waives and releases all benefit that might accrue to
Borrower by virtue of any present or future laws exempting any property that may
serve as security for this Note, or any other property, real or personal, or any
part of the proceeds arising from any sale of any such property, from
attachment, levy, or sale under execution, exemption from civil process, or
extension of time for payment, including, without limitation, any and all
homestead exemption rights of Borrower; and Borrower agrees that any property
that may be levied upon pursuant to a judgment obtained by virtue hereof, on any
writ of execution issued thereon, may be sold upon any such writ in whole or in
part in any order or manner desired by Lender.

The remedies of the Lender as provided herein, in the Pledge Agreement or the
other Loan Documents shall be cumulative and concurrent and may be pursued
singly, successively or together, at the sole discretion of the Lender, and may
be exercised as often as occasion therefor shall occur; and the failure to
exercise any such right or remedy shall in no event be construed as a waiver or
release thereof.

The Borrower and all others who are, or may become liable for the payment
hereof: (i) severally waive presentment for payment, demand, notice of
nonpayment or dishonor, protest and notice of protest of this Note, the Pledge
Agreement or the other Loan Documents, and all other notices in connection with
the delivery, acceptance, performance, default, or enforcement of the payment of
this Note, the Pledge Agreement or the other Loan Documents; (ii) expressly
consent to all extensions of time, renewals or postponements of time of payment
of this Note, the Pledge Agreement or the other Loan Documents from time to time
prior to or after the maturity of this Note without notice, consent or further
consideration to any of the foregoing; (iii) expressly agree that the Lender
shall not be required first to institute any suit, or to exhaust its remedies
against the Borrower or any other person or party to become liable hereunder or
against any collateral that may secure this Note in order to enforce the payment
of this Note; and (iv) expressly agree that, notwithstanding the occurrence of
any of the foregoing (except the express written release by the Lender of any
such person), the undersigned shall be and remain, directly and primarily liable
for all sums due under this Note.

Lender shall not be deemed, by any act of omission or commission, to have waived
any of its rights or remedies hereunder unless such waiver is in writing and
signed by Lender, and then only to the extent specifically set forth in the
writing.  A waiver on one event shall not be construed as continuing or as a bar
to or waiver of any right or remedy to a subsequent event.

The provisions of this Note may be changed only by a written agreement executed
by Borrower and Lender.

This instrument shall be governed by and construed and enforced according to the
laws of the State of Florida.

This Note shall be binding upon Borrower and the successors and assigns of
Borrower and shall inure to the benefit of Lender and the successors and assigns
of Lender.

In the event any one or more of the provisions of this Note shall for any reason
be held to be invalid, illegal, or unenforceable, in whole or in part, in any
respect, or in the event that any one or more of the provisions of this Note
operates or would prospectively operate to invalidate this Note, then and in any
of those events, only such provision or provisions shall be deemed null and void
and shall not affect any other provision of this Note.  The remaining provisions
of this Note shall remain operative and in full force and effect and shall in no
way be affected, prejudiced, or disturbed thereby.
 
 
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Whenever used, the singular shall include the plural, the plural shall include
the singular, the use of any gender shall be applicable to all genders, and the
words “Lender” and “Borrower,” shall be deemed to include the respective heirs,
personal representatives, successors and assigns of Lender and Borrower.

Lender may from time to time sell or assign, in whole or in part, or grant
participations in this Note and/or the obligations evidenced hereby without the
consent of Borrower.  The holder of any such sale, assignment or participation,
if the applicable agreement between Lender and such holder so provides, shall
be: (a) entitled to all of the rights, obligations and benefits of Lender (to
the extent of such holder’s interest or participation); and (b) deemed to hold
and may exercise the rights of setoff or banker’s lien with respect to any and
all obligations of such holder to Borrower (to the extent of such holder’s
interest or participation), in each case as fully as though Borrower was
directly indebted to such holder.  Lender may in its discretion give notice to
Borrower of such sale, assignment or participation; however, the failure to give
such notice shall not affect any of Lender’s or such holder’s rights hereunder.

BORROWER HEREBY KNOWINGLY, VOLUNTARILY, INTENTIONALLY AND IRREVOCABLY WAIVES ALL
RIGHT TO A TRIAL BY JURY WITH RESPECT TO ANY LITIGATION BASED ON THIS NOTE, OR
ARISING OUT OF, UNDER OR IN CONNECTION WITH, THIS NOTE OR ANY OTHER DOCUMENTS
THAT MAY SECURE THIS NOTE, OR ANY COURSE OF CONDUCT, COURSE OF DEALING,
STATEMENTS (WHETHER VERBAL OR WRITTEN) OR ACTIONS OF OR BETWEEN ANY PARTY HERETO
AND BORROWER AGREES AND CONSENTS TO THE GRANTING TO LENDER OF RELIEF FROM ANY
STAY ORDER WHICH MIGHT BE ENTERED BY ANY COURT AGAINST LENDER AND TO ASSIST
LENDER IN OBTAINING SUCH RELIEF.  THIS PROVISION IS A MATERIAL INDUCEMENT FOR
LENDER ACCEPTING THIS NOTE FROM BORROWER.  BORROWER’S REASONABLE RELIANCE UPON
SUCH INDUCEMENT IS HEREBY ACKNOWLEDGED.
 

 
BORROWER:
         
CLENERGEN CORPORATION
         
 
By:
/s/ Mark LM Quinn     Name:  Mark LM Quinn     Title: Executive Chairman  

 
 
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