| 2009 Rank | PFC Energy 50 Rank | Company Name | Market Cap ($US Bil.) | % Share Price Change (YoY) | Primary Business | HQ Country | Ticker/Exch. |
| 1 | 1 | PetroChina | 353.1 | 36 % | Integrated NOC | China | 601857 CH |
| 2 | 2 | ExxonMobil | 323.7 | -15 % | Integrated IOC | US | XOM US |
| 3 | 3 | BHP Billiton | 201.1 | 80 % | General Mining | Australia | BHP AU |
| 4 | 4 | Petrobras | 199.2 | 103 % | Integrated NOC | Brazil | PETR3 BZ |
| 5 | 5 | Royal Dutch Shell | 186.9 | 16 % | Integrated IOC | Netherlands | RDSA NA |
| 6 | 6 | BP | 181.8 | 26 % | Integrated IOC | UK | BP/ LN |
| 7 | 7 | SINOPEC | 159.3 | 101 % | Integrated NOC | China | 600028 CH |
| 8 | 8 | TOTAL | 151.4 | 19 % | Integrated IOC | France | FP FP |
| 9 | 9 | Chevron | 154.5 | 4 % | Integrated IOC | US | CVX US |
| 10 | 10 | Gazprom | 144.2 | 67 % | Integrated NOC | Russia | GSPBEX RU |
| 11 | | EdF | 110.1 | 3 % | Electricity | France | EDF FP |
| 12 | 11 | ENI | 102.2 | 8 % | Integrated IOC | Italy | ENI IM |
| 13 | | China Shenhua | 100.8 | 98 % | Coal | China | 601088 CH |
| 14 | 12 | GdF Suez | 98.1 | -9 % | Gas/Utilities | France | GSZ FP |
| 15 | 13 | Rosneft | 89.2 | 125 % | Integrated NOC | Russia | ROSN RU |
| 16 | 14 | E.ON | 83.9 | 4 % | Gas/Utilities | Germany | EOAN GR |
| 17 | 15 | Statoil | 79.6 | 57 % | Integrated NOC | Norway | STL NO |
| 18 | 16 | Schlumberger | 78.2 | 54 % | Oilfield Services | US | SLB US |
| 19 | 17 | Reliance | 76.6 | 85 % | R&M | India | RIL IN |
| 20 | 18 | ConocoPhillips | 75.8 | -1 % | Integrated IOC | US | COP US |
| 21 | 19 | CNOOC | 70.3 | 68 % | Integrated NOC | Hong Kong | 883 HK |
| 22 | 20 | Occidental | 66.0 | 36 % | E&P | US | OXY US |
| 23 | 21 | BG | 61.1 | 30 % | Integrated IOC | UK | BG/ LN |
| 24 | 22 | Suncor | 55.5 | 83 % | Integrated IOC | Canada | SU CN |
| 25 | 23 | RWE | 54.5 | 8 % | Gas/Utilities | Germany | RWE GR |
| 26 | | Enel | 54.6 | 3 % | Electricity | Italy | ENEL IM |
| 27 | 24 | ONGC | 54.2 | 85 % | Integrated NOC | India | ONGC IN |
| 28 | | Iberdrola | 50.2 | 4 % | Electricity | Spain | IBE SM |
| 29 | 25 | Ecopetrol | 49.2 | 42 % | Integrated NOC | Columbia | ECOPETL CB |
| 30 | 26 | LUKOIL | 47.8 | 76 % | Integrated IOC | Russia | LKOH RU |
| 31 | 27 | Canadian Natural | 39.4 | 81 % | E&P | Canada | CNQ CN |
| 32 | | Endesa | 36.4 | -15 % | Electricity | Spain | ELE SM |
| 33 | 28 | Apache | 34.7 | 38 % | E&P | US | APA US |
| 34 | | Tokyo Electric Power | 34.2 | -24 % | Electricity | Japan | 9501 JP |
| 35 | 29 | Imperial Oil | 33.0 | 15 % | Integrated IOC | Canada | IMO CN |
| 36 | 30 | Repsol YPF | 32.8 | 26 % | Integrated IOC | Spain | REP SM |
| 37 | 31 | Devon | 32.6 | 12 % | E&P | US | DVN US |
| 38 | | Exelon | 32.2 | -12 % | Electricity | US | EXC US |
| 39 | 32 | Surgutneftagaz | 31.9 | 60 % | Integrated IOC | Russia | SNGS RM |
| 40 | | OGX | 31.7 | 336 % | E&P | Brazil | OGXP3 BZ |
| 41 | 34 | Woodside | 31.7 | 65 % | E&P | Australia | WPL AU |
| 42 | 35 | Anadarko | 30.7 | 62 % | E&P | US | APC US |
| 43 | 36 | TNK-BP | 27.3 | 165 % | Integrated IOC | Russia | TNBP RU |
| 44 | 37 | Halliburton | 27.1 | 66 % | Oilfield Services | US | HAL US |
| 45 | 38 | XTO | 27.0 | 32 % | E&P | US | XTO US |
| 46 | | Southern | 26.7 | -10 % | Electricity | US | SO US |
| 47 | 39 | Transocean | 26.6 | 75 % | Drilling & Seismic | US | RIG US |
| 48 | 40 | Gazprom Neft | 26.3 | 171 % | Integrated NOC | Russia | SIBN RU |
| 49 | 41 | Sasol | 25.8 | 36 % | Integrated IOC | South Africa | SOL SJ |
| 50 | | China Coal | 25.7 | 110 % | Coal | China | 601898 CH |
| 51 | 42 | Tenaris | 25.3 | 103 % | Equipment & EPCI | Luxembourg | TS US |
| 52 | | EOG | 24.6 | 46 % | E&P | US | EOG US |
| 53 | 44 | Formosa Petrochemical | 24.5 | 28 % | R&M | Taiwan | 6505 TT |
| 54 | 45 | EnCana | 24.5 | 31 % | E&P | Canada | ECA CN |
| 55 | 46 | Husky | 24.4 | 13 % | Integrated IOC | Canada | HSE CN |
| 56 | | Fortum | 24.2 | 27 % | Electricity | Finland | FUM1V FH |
| 57 | 47 | Centrica | 23.3 | 17 % | Gas/Utilities | UK | CNA LN |
| 58 | | Dominion Resources | 23.2 | 9 % | Electricity | US | D US |
| 59 | | Eletrobras | 23.0 | 88 % | Electricity | Brazil | ELET3 BZ |
| 60 | | Duke Energy | 22.5 | 15 % | Electricity | US | DUK US |
| 61 | 48 | Marathon | 22.1 | 14 % | Integrated IOC | US | MRO US |
| 62 | | FPL Group | 21.8 | 5 % | Electricity | US | FPL US |
| 63 | | Kansai Electric Power | 21.5 | -21 % | Electricity | Japan | 9503 JP |
| 64 | 49 | PTT | 20.9 | 46 % | Integrated NOC | Thailand | PTT TB |
| 65 | 50 | Iberdrola Renovables | 20.1 | 11 % | Alternatives | Spain | IBR SM |
| 66 | | Gas Natural | 19.4 | -6 % | Gas/Utilities | Spain | GAS SM |
| 67 | | Hess | 19.8 | 13 % | Integrated IOC | US | HES US |
| 68 | | Talisman | 19.2 | 88 % | E&P | Canada | TLM CN |
| 69 | | Cenovus | 19.0 | -6 % | E&P | Canada | CVE CN |
| 70 | | Korea Electric Power | 18.8 | 28 % | Electricity | Korea | 015760 KS |
| 71 | | Chubu Electric Power | 18.7 | -21 % | Electricity | Japan | 9502 JP |
| 72 | | National Oilwell Varco | 18.4 | 85 % | Oilfield Services | US | NOV US |
| 73 | | INPEX | 17.9 | -2 % | E&P | Japan | 1605 JP |
| 74 | | AREVA | 17.7 | 2 % | Electricity | France | CEI FP |
| 75 | | Scottish & Southern | 17.3 | 6 % | Electricity | UK | SSE LN |
| 76 | | Novatek | 17.2 | 243 % | E&P | Russia | NOTK RM |
| 77 | | Tullow | 16.9 | 119 % | E&P | UK | TLW LN |
| 78 | | Public Service Enterprise | 16.8 | 14 % | Electricity | US | PEG US |
| 79 | | Chesapeake | 16.8 | 60 % | E&P | US | CHK US |
| 80 | | Southwestern | 16.6 | 66 % | E&P | US | SWN US |
| 81 | | American Electric Power | 16.6 | 5 % | Electricity | US | AEP US |
| 82 | | PG&E | 16.6 | 15 % | Electricity | US | PCG US |
| 83 | | Hong Kong China Gas | 16.4 | 67 % | Gas/Utilities | Hong Kong | 3 HK |
| 84 | | Iindian Oil | 16.0 | 50 % | R&M | India | IOCL IN |
| 85 | | EDP | 16.3 | 18 % | Electricity | Portugal | EDP PL |
| 86 | | CLP Holdings | 16.3 | 0 % | Electricity | Hong Kong | 2 HK |
| 87 | | Entergy | 15.5 | -2 % | Electricity | US | ETR US |
| 88 | | Saipem | 15.3 | 107 % | Equipment & EPCI | Italy | SPM IM |
| 89 | | Enersis | 15.1 | 80 % | Electricity | Chili | XENI SM |
| 90 | | Galp Energia | 14.4 | 73 % | Integrated IOC | Portugal | GALP PL |
| 91 | | Yanzhou Coal | 14.3 | 180 % | Coal | China | 600188 CH |
| 92 | | EnBW Energie | 14.3 | 7 % | Electricity | Germany | EBK GR |
| 93 | | FirstEnergy | 14.2 | -4 % | Electricity | US | FE US |
| 94 | | Endesa | 14.0 | 49 % | Electricity | Chili | ENDESA CI |
| 95 | | Shanxi Xishan | 14.2 | 242 % | Coal | China | 000983 CH |
| 96 | | Sempra | 13.8 | 31 % | Gas/Utilities | US | SRE US |
| 97 | | Diamond Offshore | 13.7 | 83 % | Drilling & Seismic | US | DO US |
| 98 | | OMV | 13.2 | 67 % | Integrated IOC | Austria | OMV AV |
| 99 | | Origin | 13.3 | 33 % | E&P | Australian | ORG AU |
| 100 | | Verbund | 13.1 | -7 % | Electricity | Austria | VER AV |