IRVING, Texas President Bush has been famously quoted as saying America "is addicted to oil."

For 35 years, politicians of every stripe have decried America's dependence on foreign oil.

And in an era when energy alternatives -- hybrid, hydrogen, renewable, bio, wind and lots of others are being touted as the wave of the future, along comes the world's biggest oil company with a study that says our and the world's addiction to oil and other fossil fuels isn't going away any time soon.

In fact, says ExxonMobil, even as the use of renewable energy sources -- wind, solar and biofuels -- grows rapidly at about 9 percent per year, aided by government subsidies and mandates, they aren't going to displace traditional energy sources very quickly.

According to ExxonMobil, these renewable and alternative energy sources currently represent about one-half of one percent of world energy. The oil giant expects them to reach roughly 2 percent by 2030.

Ponder that for a moment. Despite all of today's talk, the world isn't going to make much of a dent in its dependence on oil during the next 22 years.

Meanwhile, hydrocarbons will continue to account for about 80 percent of energy demand through 2030; with oil and gas alone accounting for approximately 60 percent, says ExxonMobil.

The findings are included in Outlook for Energy: A View to 2030, the latest version of an ongoing process that has been conducted over decades. The energy study is used to assist ExxonMobil's business planning and, says the company, to increase public understanding of the world's energy needs and challenges.

The outlook is developed through a detailed analysis of approximately 100 countries, 15 demand sectors and 20 fuel types, and it is underpinned by economic and population projections and expectations of significant energy efficiency improvements and technology advancements.

A fundamental finding of the study is that continued economic progress, population growth and the pursuit of improved living standards in the developing world will be the key driver of global energy demand over the next two decades. Among other key findings in the study:

Energy demand growth is expected to average 1.3 percent annually from now to 2030.

Energy demand growth in the developing world, which includes countries that are not members of the Organization for Economic Cooperation and Development (OECD), is expected to be 2 percent per year - four times that of the developed world at 0.5 percent per year.

A wide variety of energy sources will be required to meet global demand, which is expected to be one-third higher by 2030 compared to today, reaching close to the daily equivalent of 325 million barrels of oil.

Energy efficiency as measured by energy intensity - global energy demand divided by global GDP - has been improving by approximately 1 percent per year since 1980. Improvements are expected to accelerate with development and deployment of advanced technologies and average 1.6 percent per year in the future.

Projected growth of emissions of carbon dioxide from energy use varies in the developed and developing world. Increased reliance on coal and strong growth in all fossil fuel use is expected to increase energy-related CO2 emissions in the developing world by 2 percent per year. Overall low energy demand growth combined with a shrinking reliance on coal will keep CO2 emissions in the developed world almost constant through 2030.

Slowing the growth of carbon dioxide emissions will require global participation, steep changes in energy efficiency, technology gains and massive investment over decades. Substantial and cost-effective CO2 reduction efforts will need to maximize the use of markets and reach broadly across the economy, involving everyone from producers to consumers.

"The energy challenges faced by the world are undeniable," said Rex W. Tillerson, ExxonMobil chairman and chief executive. "Economic progress will drive energy demand, oil and gas will remain indispensable for the foreseeable future, and a global effort will be required to tackle greenhouse gas emissions."