| Total AM radio stations authorized to operate at night in the US: | 4172 | |||||||||
| Class A stations: | 74 | |||||||||
| Class B stations: | 1770 | |||||||||
| Class C Stations: | 1062 | |||||||||
| Class D Stations: | 1265 | |||||||||
| Total power consumed by AM radio stations operating from midnight to 6 am: | 119367.9 | kWh/Day | 43569291.7 | kWh/year | ||||||
| Station class | Total RF power (Kilowatts) | Ave RF station power (Kilowatts) | Efficiency (%) | Total AC Power (Kilowatts) | kWh/Day (all stations) | kWh/Year (all stations) | Cost per day (all stations) | Cost per year (all stations) | ||
| A | 3155 | 42.63 | 0.57 | 5535.1 | 33210.5 | 12121842.1 | $3,653.16 | $1,333,402.63 | ||
| B | 6560 | 3.73 | 0.536 | 12238.8 | 73432.8 | 26802985.1 | $8,077.61 | $2,948,328.36 | ||
| C | 1020 | 0.96 | 0.536 | 1903.0 | 11417.9 | 4167537.31 | $1,255.97 | $458,429.10 | ||
| D | 87.11 | 0.069 | 0.4 | 217.8 | 1306.7 | 476927.25 | $143.73 | $52,462.00 | ||
| Totals | 10822.11 | 19894.7 | 119367.9 | 43569291.7 | $13,130.47 | $4,792,622.09 | ||||
| Total cost per year based on electric rate of: | 0.11 | per kWh | ||||||||
| Total CO2 emissions based on: | 1.7 | pounds of CO2 per kWh | 74067796.0 | Pounds/year | ||||||
| Total SO2 emissions based on: | 0.00412 | pounds of SO2 per kWh | 179505.5 | Pounds/year | ||||||
| Total Nox emissions based on: | 0.00348 | pounds of Nox per kWh | 151621.1 | Pounds/year | ||||||
| Notes: | ||||||||||
| Power consumed is based on the transmitter power output multiplied by the average AM solid state transmitter efficiency, | ||||||||||
| It does not include such things as air conditioning or suplimental cooling loads, or other loads which may not be present | ||||||||||
| if the transmitter is turned off. | ||||||||||
| Radio station data from the FCC data base as of April 23, 2009 and includes all stations authorized to transmitt at night time. It does not include | ||||||||||
| Construction permits, applications, planned us or critical hours use. | ||||||||||
| Transmitter efficiency data is an average obtained from US solid state transmitter manufactures, Harris corporation, Nautel and Broadcast | ||||||||||
| Electronics. Among those manufactures, the average Power Line to RF efficiency is 53.6% | ||||||||||
| Electrical power rate data is from the US department of energy and is an agrigate for all US locations, individual rates may vary | ||||||||||
| Emissions data is from the US environmental protection agency | ||||||||||