Notes
Slide Show
Outline
1
Economics of
Electric Generation
Technologies
  • Eric Blake
  • The Prime Group LLC
2
Fuels Used to Generate Electricity
  • Coal
  • Natural Gas
  • Nuclear
  • Oil
  • Hydro
  • Renewable Sources (Wind, Solar, Geothermal, Biomass)
3
Fuel Types
4
What’s Being Constructed
  • Planned Generation Additions in 2004
    • Natural Gas – 23,166 MW (97.0%)
    • Biomass – 558 MW (2.3%)
    • Coal – 105 MW (0.4%)
    • Geothermal – 21 MW (0.1%)
    • Oil – 17 MW (0.1%)
    • Hydro – 3 MW (0.0%)
    • Wind – 1 MW (0.0%)
    • Other – 0 MW (0.0%)




5
Coal-Fired Generation vs. Conventional Gas Combustion Turbine
  • Conventional Coal
    • Capacity Cost (~$1,200/kW)
    • Fixed O&M (~$23/kW/Yr)
    • Variable Cost (~$0.013/kWh)
  • Conventional CT
    • Capacity Cost (~$350/kW)
    • Fixed O&M (~$6/kW/Yr)
    • Variable Cost (~$0.070/kWh)
6
Load Duration Curve
7
CT versus Coal
8
CT Operation
9
Combustion Turbine Technology
10
Combined Cycle Technology
11
Combined Cycle CT vs. Conventional Gas Combustion Turbine
  • Combined Cycle
    • Capacity Cost (~$550/kW)
    • Fixed O&M (~$16/kW/Yr)
    • Variable Cost (~$0.046/kWh)
  • Conventional CT
    • Capacity Cost (~$350/kW)
    • Fixed O&M (~$6/kW/Yr)
    • Variable Cost (~$0.070/kWh)
12
Annual Costs
13
Coal-Fired Generation vs. Fuel Cells
  • Conventional Coal
    • Capacity Cost (~$1,200/kW)
    • Fixed O&M (~$23/kW/Yr)
    • Variable Cost (~$0.013/kWh)
  • Fuel Cells
    • Capacity Cost ($2,000 - $5,000/kW)
    • Fixed O&M (~$15/kW/Yr)
    • Variable Cost (~$0.035/kWh)
14
Fuel Cells Technology
15
Fuel Cell Electric Generation
16
Fuel Cells versus Coal
17
The Fuel Cell Horizon
  • The Good News – the capital cost of a fuel cell generating set is projected to decrease (projected to drop to as low as $1,000 to $1,500/kW in the next 10 to 20 years)
  • The Bad News – at this cost, fuel cells still won’t be competitive with coal-fired generation
18
Wind Generation
  • Large Turbines (~1,000 MW)
    • ~$1,000/kW
    • Require 13 MPH (6 m/s) average wind speeds
  • Small Turbines (~50 kW)
    • $2,000 to $6,000/kW
    • Require 9 MPH (4 m/s) average wind speeds


19
Coal-Fired Generation vs. Wind Generation
  • Conventional Coal
    • Capacity Cost (~$1,200/kW)
    • Fixed O&M (~$23/kW/Yr)
    • Variable Cost (~$0.013/kWh)
  • Wind Turbine
    • Capacity Cost (~$1,000/kW)
    • Fixed O&M (~$26/kW/Yr)
    • Variable Cost (~$0.000/kWh)
20
Wind versus Coal
21
Prospects for Wind Generation
  • Advantages
    • Low cost per kWh
    • Declining capacity cost
    • Environmentally friendly (expect for those birds)
  • Disadvantages
    • Availability dependent on wind (might not be available during peak conditions)
    • Expect availability to be <40%
    • Must be integrated with other resources
22
Photovoltaic Technology
  • Relies on semi-conductor technologies
    • Silicon-based wafers (e.g., single crystal, multi-crystalline, amorphous)
    • Thin-Film semi-conductors (experimental)
    • Organic film semi-conductors (experimental)
  • Currently has high capacity cost, but projected to decline
  • May be cost effective in remote areas (e.g., livestock pumps)
23
Coal-Fired Generation vs. Photovoltaic Cells
  • Conventional Coal
    • Capacity Cost (~$1,200/kW)
    • Fixed O&M (~$23/kW/Yr)
    • Variable Cost (~$0.013/kWh)
  • Photo Cells
    • Capacity Cost (~$4,000/kW)
    • Fixed O&M (~$10/kW/Yr)
    • Variable Cost (~$0.000/kWh)
24
Photovoltaic versus Coal
25
Prospects for Photovoltaic Cells
  • Advantages
    • Renewable energy
    • Likely to be available during peak summer conditions
    • Declining capacity cost
  • Disadvantages
    • Currently has high capacity cost
    • Availability dependent on sunlight
    • Unknown Asset Service Life