POWER FROM WASTE:COST OF ENERGY FROM WASTE PLANTS

COST OF ENERGY FROM WASTE PLANTS

The capital cost of equipment to generate electricity from waste is generally much higher than for conventional power generation equipment to burn fossil fuel. Plant design is specialized and must include refinements for emission control that are not necessary in a fossil fuel plant. Grate design is unique too.

Against this must be offset the revenue of the plant, not only from the electricity generated but also from the fuel itself, the waste. Industry and municipalities expect to pay to dispose of their waste. Consequently, the economics of a project should be designed so that the revenue from the waste disposal con- tracts are adequate to enable the power from the plant to be sold competitively. It should be remembered, however, that a waste to energy plant has as its pri- mary purpose the treatment and elimination of MSW. Electricity is a useful by- product of this process but generation is not the main function of the plant.

A study carried out for the Mayor of London and published in 2008 looked at the cost of the principle waste combustion technologies. The main findings are shown in Table 16.2. The study concluded that a conventional incineration facility would cost around £45 m for a plant with the capacity to treat 100,000 tonne/y of MSW while for a 200,000 tonne/y plant the cost would

Power Generation Technologies-0338

be £76 m. With the maximum power output from the smaller plant put at 6 MW, this equates to £7500/kW while the larger plant has a maximum output of 12 MW, equating to 6300/kW.

Advanced thermal treatment plants such as gasifiers and pyrolysis plants have slightly higher costs, as shown in the table. Their potential power outputs are also slightly lower. As a consequence the unit cost of a 100,000 tonne/y advanced plant is £9100/kW while for the 200,000 tonne/y plant the unit cost is £7700/kW. Operating costs for the plants are broadly similar at between £40/ tonne and £70/tonne depending upon plant size.

U.K. costs are similar to estimates for plants in the United States where the cost of a typical municipal waste combustion plant was put at $5,000–10,000/ kW during the middle of the first decade of the 21st century. Again smaller plants are relatively more expensive than larger plants.

Related posts:

Power Transformers:Transformer Failure Modes.
The commercial drive.
Electrical Power System Grounding and Ground Resistance Measurements:Understanding Ground Resistance
Electrical Power System Grounding and Ground Resistance Measurements:Ground Resistance Values
Capacitor Application:Failure Modes and Case Ruptures
Mechanical fuel systems:Fuel filters and water separators
AN INTRODUCTION TO ELECTRICITY GENERATION:RENEWABLE ENERGY AND DISTRIBUTED GENERATION
COAL-FIRED POWER PLANTS:COAL TREATMENT AND LOW NITROGEN OXIDE COMBUSTION STRATEGIES
TIDAL BARRAGE POWER PLANTS:TWO-BASIN PROJECTS
Another Groups of Thermal Optimized Modulation Methods of Three-Level Neutral-Point-Clamped Inverter...
BIOMASS-BASED POWER GENERATION:FUEL HANDLING
State-of-the-Art for Wind Power Generation
Reliability-Cost Models for the Power Switching Devices of Wind Power Converters
The Current Situation and Perspectives on the Use of Wind Energy for Electricity Generation:Austria
The Current Situation and Perspectives on the Use of Biomass in the Generation of Electricity:Denmar...

Leave a comment

Your email address will not be published. Required fields are marked *