Daily Electricity Generation Calculation for a 300-Ton/Day MSW Incineration Power Plant
Estimated Daily Output
Based on industry benchmarks and operational data from Chinese waste-to-energy plants (e.g., a 300-ton/day plant with a 6MW turbine), the daily electricity generation ranges between 82,000–110,000 kWh/day (or 82–110 MWh/day).
Typical value: ≈ 92,000 kWh/day (mid-range estimate).
Key Calculation Basis
Benchmark Data:
Annual generation for a 300-ton/day plant: 30–40 million kWh/year (historical industry standard).
Daily output = Annual output ÷ 365 days:
Lower bound: 30,000,000 ÷ 365 ≈ 82,000 kWh/day
Upper bound: 40,000,000 ÷ 365 ≈ 110,000 kWh/day
Per-Ton Efficiency:
Average generation: 300–360 kWh/ton of waste (for typical Chinese MSW with LHV of 1,000–1,200 kcal/kg).
Calculation:
300 tons/day × 300 kWh/ton = 90,000 kWh/day
300 tons/day × 360 kWh/ton = 108,000 kWh/day
Result aligns closely with the benchmark range.
Influencing Factors
Waste Calorific Value (LHV):
Higher LHV (e.g., >1,400 kcal/kg) may push output toward 110,000 kWh/day.
Lower LHV (e.g., <800 kcal/kg) may reduce output to ~82,000 kWh/day.
Technology & Efficiency:
Grate furnaces (most common): Achieve 22–25% electrical efficiency.
Fluidized beds: Require auxiliary fuel, lowering net output.
Operational Losses:
Load factor (70–90%), downtime, and energy consumption by flue gas treatment systems (e.g., wet scrubbers consume 15–20% of generated power).
Real-World Reference
Shanghai Plants:
Average 310 kWh/ton generation across 16 facilities. For 300 tons/day:
300 tons/day × 310 kWh/ton = 93,000 kWh/day
Turbine Capacity Correlation:
A 6MW turbine's theoretical maximum output = 6 MW × 24 h = 144,000 kWh/day.
Actual output is ~65% of theoretical max due to efficiency losses (typical for WtE plants), resulting in 93,600 kWh/day.
Recommendations
Optimization Actions:
Conduct waste composition analysis to determine exact LHV.
Monitor steam parameters (temperature/pressure) to maximize turbine efficiency.
Final Estimate:
82,000–110,000 kWh/day (92,000 kWh/day typical), subject to local waste properties and plant design.