By making our homes more efficient and conserving on automotive fuel use, we could theoretically save 40 percent or more on our total energy consumption.
"My guess is that solar energy will be 40 to 70 percent of the total energy consumption, 30 to 60 years from now, " he said.
According to a European target that Britain has signed up to, renewables will account for 15% of total energy consumption by 2020, up from 3% today.
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Environmentalists like the idea because they believe it has the potential to reduce total energy consumption and thus help to curb carbon emissions and stop global warming.
China's industrial sector accounts for 70% of total energy consumption.
Between 1990 and 2010, according to data from the IEA, the share of renewables in total energy consumption has fallen slightly or remained stagnant in virtually all African countries, with the interesting exceptions of Mozambique, Kenya, and Angola.
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What this is all suggests is that the human spirit in its most daring moments has actually manifested physical attenuations of energy expenditure, reducing the tally of total energy consumption by exponential multiples undreamed of a few generations ago.
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China will "endeavor" to cut emissions of carbon dioxide -- the most prevalent of the greenhouse gases that cause climate change -- by "a notable margin" in coming years, Hu said, adding that China also will "vigorously develop renewable energy and nuclear energy" with the goal of increasing the share of non-fossil fuels in total energy consumption to 15 percent by 2020.
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It says the proposed power station should help the UK hit its renewable-energy target of 15% of total UK energy consumption by 2020.
Bioenergy is also a crucial element in the country's energy sector, supplying almost 20% of total primary energy consumption.
The estimates of total primary energy consumption are those of the EIA. For GDP figures, the EIA used data from Global Insight.
Every day the global economy requires 86 million barrels of oil per day, and that is only 40% of the total daily world energy consumption.
Every three years we look ahead 30 years and we look at the total need or consumption of energy in the world as we see it at that point.
The increase alone would be greater than America's total consumption today, yet China's energy use per person would still be only half that in America.
In fact, renewable energy production is dropping in European Union member states as a percentage of total consumption.
And the looming block obsolescence of its existing nuclear energy infrastructure -- which currently supplies 8% of total U.S. daily consumption -- means that, unless steps are promptly taken to prepare, certify and bring on-line safe, modern replacement reactors, America will become still more vulnerable to threats, or actual interruptions of, its overseas oil supplies.
Deploying advanced power electronics could reduce electricity consumption up to 30%, or 12% of total U.S. energy use.
The Soviet shares of total oil and gas consumption respectively should be limited to about 30%, mirroring the intent of the International Energy Agency Agreement of May 1983 pertaining to West European dependency on Soviet gas supplies.
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In total, cities house more than half the world's population, and account for two-thirds of its energy consumption and over 60% of its greenhouse-gas emissions.
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