Table 8. CCTI Requirements for Qualifying Combined Heat and Power Systems

System Sizea Minimum Electric or Mechanical Power (Percent) Minimum Useful Thermal Output (Percent) Minimum Overall System Efficiency (Percent)
Less than 50 Megawatts 20 20 60
Greater than 50 Megawatts 20 20 70
aThe minimum size requirement is 67 horsepower for mechanical systems. The 50-megawatt system size corresponds to 67,000 horsepower.
Source: U.S. Department of the Treasury, General Explanation of the Administration's Revenue Proposals (Washington, DC, February 1999), pp. 45-46.