Exhibit 10.21

TRANSPORTATION SERVICE
AGREEMENT
Contract Identification FT8742
This
Transportation Service Agreement (Agreement) is entered into by
Great Lakes Gas Transmission Limited Partnership (Transporter) and
TRANSCANADA PIPELINES LIMITED (Shipper).
WHEREAS, Shipper
has requested Transporter to transport Gas on its behalf and
Transporter represents that it is willing to transport Gas under
the terms and conditions of this Agreement.
NOW, THEREFORE,
Transporter and Shipper agree that the terms below constitute the
transportation service to be provided and the rights and
obligations of Shipper and Transporter.
1.
EFFECTIVE DATE : December 06, 2007
2.
CONTRACT IDENTIFICATION : FT8742
3.
RATE SCHEDULE : FT
4.
SHIPPER TYPE : Other
5.
STATE/PROVINCE OF INCORPORATION : Canada
6.
TERM : November 01, 2008 to October 31, 2010
Transporter and Shipper
agree that Shipper may extend the primary terns of this Agreement
by exercising a contractual Right of First Refusal, pursuant to the
procedures set forth in section 16 of the General Terms and
Conditions of Transporter’s FERC Gas Tariff.
7.
EFFECT ON PREVIOUS CONTRACTS :
This Agreement
supersedes, cancels and terminates, as of the effective date stated
above, the following contract(s): N/A
8.
MAXIMUM DAILY QUANTITY (Dth/Day): 470,000
Please see Appendix A
for further detail.
9.
RATES :
Unless Shipper and
Transporter have agreed to a Discounted Rate, pursuant to
Section 19.2 of the General Terms and Conditions, or to a
Negotiated Rate, pursuant to Section 4.5 of the Rate Schedule
named above, rate