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The data were obtained from the Emissions and Generation Resource Integrated Database (eGRID), hosted on the US Environmental Protection Agency's website.

The table and graph display the heat input in MMBTU (the energy industry's way of writing millions of BTUs) and the CO2 output (in tons) for most electricity generation plants in California for 1997.  Other state data are available in EGRID97.  By comparing heat input to CO2 output, one can get a measure of the "pollution efficiency" of each plant.  By examining the scatter plot, clearly there is one power plant that produces an excessive amount of CO2 for its heat input.  Is this power plant an outlier because of false information, or is it truly wasteful?

One BTU is the quantity of heat necessary to raise the temperature of one pound of water one degree Fahrenheit from 58.5 to 59.5 degrees under standard pressure of 30 inches of mercury at or near its point of maximum density. One BTU equals 252 calories, 778 foot-pounds, 1,055 joules or 0.293 watt-hours.

The Emissions & Generation Resource Integrated Database (EGRID) is a comprehensive data base of environmental attributes of electric power systems. EGRID is based on available plant-specific data for all US electricity generating plants that provide power and report data to the US government. Data reported includes electricity generation (in MWh), resource mix (for renewables and nonrenewables), emissions (in tons for NOx , SO2, and CO2 ), emission rates (in both pounds per megawatt-hour [lbs/MWh] and pounds per million BTUs [lbs/MMBTU] for NOx , SO2, and CO2 ), heat input (in MMBTU), and capacity (in MW).

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View the Data

 Emissions and Generation Resource Integrated Database (1997 data) United States EPA California Power Plants plant annual heat input (MMBTU) Plant annual CO2 emissions (tons) ALAMITOS 45179353 2684889 ALMOND POWER PLANT 1000518 57891 BROADWAY 1902299 113051 CARSON ICE CG 3334351 196727 COACHELLA 85819 5031 CONTRA COSTA 13897014 825884 COOL WATER 22107006 1306883 DIVISION 4937 410 EL CAJON 12418 733 EL CENTRO 4602222 490758 EL SEGUNDO 12128073 720753 ELLWOOD 14034 812 ENCINA 26266069 1565218 ETIWANDA 11670247 693486 GIANERA 109260 6322 GLENARM 62306 3605 GRAYSON 2449635 203338 HARBOR 3722729 221181 HAYNES 7928255 471165 HIGHGROVE 95438 5673 HUMBOLDT BAY 2234326 133163 HUNTERS POINT 12607403 751899 HUNTINGTON BEACH 8479950 503772 KEARNY 247236 14413 KINGS BEACH 3408 283 LONG BEACH 1854822 108170 MAGNOLIA 139463 8076 MANDALAY 13840019 823269 MCCLELLAN 53520 3099 MCCLURE 39998 2979 MIRAMAR 122522 7125 MORRO BAY 16364372 972513 MOSS LANDING 57304904 3405559 NAVAL STATION 71053 4148 NAVAL TRAINING CTR 9961 589 NORTH ISLAND 26901 1761 OAKLAND 44496 3699 OLIVE 1796859 106735 ORMOND BEACH 16377805 973311 PEBBLY BEACH 311866 25925 PITTSBURG 40099067 2383037 PORTOLA 3379 281 POTRERO 8345753 519699 REDDING POWER 10339185 608293 REDONDO BEACH 26923176 1600006 ROCKWOOD 44467 2659 SAN BERNARDINO 287218 17070 SANTA CLARA COGEN 833261 48213 SCA 4487554 2340088 SCATTERGOOD 9889331 537922 SOUTH BAY 23038851 1353523 SPA 2460438 145701 WALNUT 40594 2349 WOODLAND 466256 27088

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