1 March 10, 2009 Electrical Interconnection Approval of NON-HONI Biogas Projects Prepared By: Martin Lensink, P. Eng. Principal-In-Charge CEM Engineering 26 Hiscott Street, Suite 201 St. Catharines, Ontario, L2R 1C6

2 March 10, 2009 Table of Contents 1.Introductions 2.Description of Proponents Operations 3.Description of Electrical Supply 4.Description of Biogas Projects 5.LDC’s and LDC Approval 6.Conclusions

3 March 10, 2009 Introduction – CEM Engineering Engineer consulting firm (9+ people). Specialize in “thermal power”. Committed to helping energy intensive customers manage energy use & reduce energy cost, through proper application of high efficiency energy conversion technology. Established in early Lead by Martin Lensink: –28+ years in cogen/energy sector

4 March 10, 2009 Introduction – Martin Lensink McMaster University, Mech. Eng. & Mgmt, 1980 Five (5) Energy Firms Between 1982 and present –Union Gas Ltd. (cogeneration via natural gas) –SNC Lavalin (cogeneration engineering) –U.S. Turbine Corp. (cogeneration major equipment) –Toromont Energy Ltd. (sale of cogenerated energy) –CEM Engineering (thermal power engineering)

5 March 10, 2009 Description of Proponents Operation Bayview Flowers Ltd. –Jordan Station – –Established 1971 –340,000 ft 2 –Potted plants & bedding plants –High quality cut flower arrangements –Hot water heating system

6 March 10, 2009 Description of Proponents Operation Vandermeer Greenhouses Ltd. –Niagara-On-The-Lake – –Established 1976 –280,000 ft 2 –Specialists in spray chrysanthemums –Hot water heating system

7 March 10, 2009 Description of Proponents Operation Morningside Greenhouses Ltd. –Beamsville –Established 1992 –100,000 ft 2 –Cut lilies (year round) –Heating system is steam/hot water hybrid

8 March 10, 2009 Description of Electrical Supply Bayview Flowers Ltd. –Supplied at 27.6 kV (3 phase). –1,000 kVA transformer (wye-wye). –600 V distribution bus (2,000 A; 50 kA). –Secondary metered. –180 kW emergency genset.

9 March 10, 2009 Description of Electrical Supply Vandermeer Greenhouses Ltd. –Supplied at 27.6 kV (3 phase). –1,000 kVA transformer (wye-wye). –Secondary metered. –600 V distribution bus (1,200 A; 18 kA). –Distribution bus being upgraded to 50 kA. –200 kW emergency genset.

10 March 10, 2009 Description of Electrical Supply Morningside Greenhouses Ltd. –Supplied at 4.8 kV (single phase). –167 kVA transformer. –Secondary metered. –Two (2) emergency gensets (190 kW; 122 kW). –Loads served off two (2) buses.

11 March 10, 2009 Description of Biogas Project Bayview Flowers Ltd. –1,200 m 3 Primary Digester. –1,200 m 3 Secondary Digester and storage of both biogas & digestate. –15 m 3 dry feeder (TMR type). –Biogas Cogeneration System (250 kW e and 250 kW t ). –Retrofit an existing boiler to burn biogas (with biogas blower).

12 March 10, 2009 Description of Biogas Project Bayview Flowers Ltd.

13 March 10, 2009 Description of Biogas Project Vandermeer Greenhouses Ltd. –1,526 m 3 Primary Digester. –1,526 m 3 Secondary Digester. –3,184 m 3 digestate storage. –30 m 3 Dry Feeder. –Biogas Cogeneration System (335 kW e and 400 kW t ). –40 m 3 buried tank (for liquid input). –Digestate separator. –Remote monitoring & control via Internet.

14 March 10, 2009 Description of Biogas Project Morningside Greenhouses Ltd. –1,526 m 3 Primary Digester. –1,780 m 3 Secondary Digester and storage of both biogas & digestate. –15 m 3 dry feeder (TMR type). –Biogas Cogeneration System (1900 kW e and 320 kW t ). –Remote monitoring & control via Internet.

15 March 10, 2009 LDC and LDC Approval Bayview Flowers Ltd. –LDC was Peninsula West Utilities Ltd. at the time. –LDC is now Niagara Peninsula Energy Inc. –Application was based on 1 MW e (ultimate). –Request to connect submitted August, –Need for CIA waived December, –1 MW e much less than 50% of historic minimum feeder load. –No remote trip needed. –Metering configuration changed for two (2) meters (Series Metered).

16 March 10, 2009 LDC and LDC Approval Bayview Flowers Ltd. Metering Configuration – Series Metered, Secondary Metered

17 March 10, 2009 LDC and LDC Approval Vandermeer Greenhouses Ltd. –LDC is NOTL Hydro. –CIA application submitted October, –CIA based on 750 kW e. –NOTL Hydro retained AESI to do CIA. –CIA report completed on January, –No modification required.

18 March 10, 2009 LDC and LDC Approval Morningside Greenhouses Ltd. –LDC is Grimsby Power. –CIA application submitted January, –Grimsby Power retained Dromey Design Inc. (Ian Dromey) to complete CIA. –CIA report received May, –No remote trip required.

19 March 10, 2009 Conclusions Two (2) CIA’s took 3-4 months to process In one case, CIA was not needed at all. Another LDC recently waived need for CIA for a 250 kW e system on a 27.6 kV 3 phase feeder in Southwestern Ontario. Each LDC liked our proposed protection and control system (based on SEL-451). In each case, we had/have to demonstrate that we are off-line in <160 ms (in event of abnormal conditions on LDC feeder).