Bob Gundersen, PSNH Hydro Manager

Transcription

1 PSNH s Renewable Hydro Power Fleet Bob Gundersen, PSNH Hydro Manager 1

2 PSNH is a Regulated Public Utility serving ~480,000 customers in New Hampshire. Its generation capacity plays a small but important role in the region. New England Capacity New Hampshire Capacity Other Other Generators Generators PSNH 97% 3% PSNH 70% 30%, 1,153 MW 2

3 Generating Plants The Hydro fleet has: 20 units at 9 sites throughout New Hampshire 69 megawatts total 3 work centers employ a total of 29 people. All are remotely dispatched from Manchester 3

4 PSNH HYDRO CONSTRUCTION DATES & CAPACITIES Const Date Cap MW AMOSKEAG G G G AYERS G Constructed by Utilities Power Co. in 1924, purchased by PSNH in 1928 and redeveloped in 1931 G G EASTMAN G Constructed by B&M Railroad in 1901 and redeveloped by PSNH in 1983 G GARVINS G Constructed by Manchester Traction & Light in 1901 and 1925 and refurbished in 1981 G G G JACKMAN G HOOKSETT G GORHAM G Site was purchased by PSNH in 1943 G G G SMITH G New more efficient runner installed 2006 CANAAN G

5 Hydropower plants harness water's potential energy and use gravity to convert that potential energy into kinetic energy and then into electricity. When there is a difference in height between the reservoir and the turbine, water flowing through the dam turns the turbine, which turns a generator, making electricity. 5

6 Site performance and climate MW-Hr 45,000 40,000 35,000 30,000 25,000 20,000 15,000 10,000 5,000 0 PSNH Monthly Hydro Generation Month Long Term Ave Generation 2007 Generation Average Capacity Factor SMITH JACKMAN HOOKSETT GORHAM GARVINS EASTMAN FALLS CANAAN AYERS ISLAND AMOSKEAG 0% 10% 20% 30% 40% 50% 60% 70% 80% Average Hydro Energy Contribution by Site 35.0% 30.0% 25.0% 20.0% 15.0% 10.0% 5.0% 0.0% AMOSKEAG AYERS ISLAND CANAAN EASTMAN FALLS GARVINS GORHAM HOOKSETT JACKMAN SMITH 6

7 Stakeholders FERC the principal licensing agency US Fish and Wildlife State Dam Safety Bureau NH Fish & Game NHDES State Historic Preservation Office Town Wetland, Zoning, etc. Neighbors Media Competing electrical generators Various non-governmental organizations (NGO s) Fishing groups Audubon & Wildlife Societies Boating groups About 20 interested parties took part in a scoping session at our 1.1 MW Unit up in West Stewardstown for its relicensing Many agencies, groups and people have a big say in what we do 7

8 Hydro Pros & Cons Pros Renewable, Reusable & Zero Emission Proven & Reliable No fuel bills! Offers recreational sites Cons Expensive to build Impacts fish and river habitat Depends on rainfall Takes a lot of prime land 8

9 Recent Projects Smith Runner Replaced after 48 years of service. 8% more energy annually. Shorter annual inspections. The incremental energy eligible for a Federal Production Tax Credit Considered Class Renewable in New Hampshire. 9

10 Recent Projects Jackman Penstock 10

11 Current Project Amoskeag rubber dam 400 ft of an Obermeyer system flashboards are being installed at Amoskeag this summer. 11

12 Some old pictures.. 12

13 Other Resources PSNH's Hydro sites: How hydro power works: PSNH's woodburning power plant: fuel diversity: PSNH Fossil plants: Misc water turbine ideas: / h/ bi Some other Links: New Hampshire Climate: data: Jackman Penstock replacement effort: New Penstock For Old Hydro Plant - 1/28/ New England Construction Obermeyer flash board system: 13

14 QUESTIONS? 14

15 GARVINS FALLS 12.4 MW 15

16 AYERS ISLAND 9 MW 16

17 EASTMAN FALLS 6.5 MW 17

18 Hooksett Hydro 1.6 MW 18

19 SMITH HYDRO 17.6 MW 19

20 CANAAN 1.1 MW 20

21 GORHAM 2 MW 21

22 AMOSKEAG 17.5 MW 22

23 JACKMAN 3.5 MW 23

24 PSNH Service Area: Key Facts 5,445 square miles 211 New Hampshire communities More than 480,000 customers 8,041,000 megawatt hours in annual sales 1,234 employees 1,000 miles of transmission and about 12,000 miles of distribution lines 24

25 Some Other Hydro Terms 1 Cubic Feet per Second (CFS): the flow of water equal to gallons per minute FERC: : Federal Energy Regulatory Commission issues federal licenses to dam owners listing all conditions Fish Ladder: devices over which water spills down from the dam to river in stages, allowing fish to swim upstream over a dam Fish Passage: : rules prescribing methods required to allow fish to move upstream and downstream according to their spawning behavior Head: the height of the water, in feet, from the top of the reservoir to the turbine. This is a measure of the potential energy available for generation 1 megawatt (MW) = 1 million watts, or 1,000 kilowatts 25

26 Fact Sheet w ww.hydro.org National Hydropower Association One Massachusetts Ave., NW Suite 850 Washington, DC PH: (202) FX: (202) Hydropower February 14, 2006 Hydropower is a domestic source of clean, renewable, reliable, and affordable electricity. No other energy source offers so many advantages. Clean - Hydropower uses water to generate electricity. It is climate-friendly and does not produce air pollution or create any toxic by-products. Renewable - Like wind, solar, and geothermal, hydropower s fuel is essentially infinite and is not depleted during the production of electricity. Hydropower facilities simply harness the natural energy of flowing and falling water to generate electricity. Domestic and Secure - Water from our rivers is a domestic resource that is not subject to disruptions from foreign suppliers, cost fluctuations, and transportation issues. Reliable Hydropower can go from zero power to maximum output rapidly and predictably. This makes hydropower exceptionally good at meeting changing demands for electricity and providing ancillary electrical services that maintain the balance between supply and demand. Efficient - Today's hydropower turbines are capable of converting more than 90 percent of available energy into electricity, which is more efficient than any other form of generation (the best fossil fuel power plant is only about 50 percent efficient). Flexible - Hydropower has the unique ability to change output quickly. Its unique voltage control, load-following, and peaking capabilities are critical for electric grid stability. This ability also provides an efficient and cost-effective way to support the use of intermittent renewable sources of power such as wind and solar energy. Popular - Nationally, 93 percent of individuals believe hydropower is important or very important for meeting future electricity needs. 1 Non-power benefits - Hydropower projects do more than just produce electricity; they create wildlife conservation lands,,provide stable habitat for many kinds of wildlife, support healthy fisheries, provide water supply, control floods, irrigate land for food production, and create recreational opportunities for millions of Americans. # # # public opinion poll by Bisconti Research Inc. 26