The problem is that solar energy costs too much.

That's how much extra energy Earth is gaining each day.

This means that due to the v2 term in the kinetic energy formula, millions of times as much energy is required.

Much progress in energy economics has been made through the conferences of the International Association for Energy Economics, the model comparison exercises of the (Stanford) Energy Modeling Forum and the meetings of the International Energy Workshop.

And just as these groups embrace the green energy challenge and it's really been amazing to me to watch how much brain power, how much money and how much serious thought has, really over the last three years, just poured into the green energy field.

Much of its wealth reflects the increased value of energy, not productive economic activity.

Much of the rest of the world, meanwhile, is brimming with energy and hope.

But Russia needs the revenue at least as much as Europe needs the energy.

Germany s move toward renewable energy is likely to have a much broader positive impact.

Germany is not only much closer physically to Russia it is also much more dependent on Russia in terms of energy security.

The paradox of today s quest for energy independence is that pursuing it actually increases energy insecurity. However much politicians who call for energy independence might prefer it otherwise, the market has chosen oil as a staple energy source.

But there is no political Europe and not much energy left in the economic Europe.

However, in humid climates much energy is required to remove excess moisture from ventilation air.

But even if his program succeeds, it will not do much to increase America s energy security.

No known process in the Universe can produce this much energy in such a short time.

More energy is coming in than going out, until Earth warms up enough to again radiate to space as much energy as it absorbs from the Sun.

The advances in materials science open the possibility of much more energy efficient residences and commercial buildings.

In Denmark, a group of researchers estimated by how much various energy crops would reduce CO2 emissions.

The other thing we discovered is that efficiency doesn't matter so much if your energy source is free.

Ironically, the lights out campaign also implies much greater energy inefficiency and dramatically higher levels of air pollution.

Even so, it radiates about as much energy in 20 seconds as does the Sun in a year.

If you put carpeting in your house, it's about a tenth of the embodied energy of the entire house, unless you use concrete or wood for a much lower embodied energy.

American citizens resistance to moderating energy consumption for the sake of the global environment is much more deeply embedded.

Much of this Caspian oil is in Kazakhstan, giving that country a critical role in the regional energy market.

This means that we need to invest much more in research and development aimed at developing low carbon energy.

In some cases, the technical potential of particular energy technologies may be much greater than the actual sustainable potential .

He has dedicated much energy to exploring ways and means to achieve a programme of work for this Conference.

This is the amount of energy that goes into any paper towel or embodied water, and every time I use a paper towel, I am using this much virtual energy and water.

By the same token, soaring energy prices shifted purchasing power from the United States and Europe to oil exporters, who, recognizing the volatility of energy prices, rightly saved much of this income.

These particles must have just as much mass and energy as is carried in by the proton and anti proton.

Moreover, the alternatives to nuclear energy and to fossil fuels are well known and technically much more advanced and sustainable.

The problem is that green energy mostly is still much more expensive, less effective, and more intermittent than the alternatives.

Accelerating a spacecraft to orbital speed requires more than 60 times as much energy as accelerating it to Mach 3.

This effect is much less significant than the total energy change due to the axial tilt, and most of the excess energy is absorbed by the higher proportion of water in the southern hemisphere.

The energy sector has a relatively slow rate of capital replacement because of the long lifetimes of much of its infrastructure.

Appropriate regulation and sufficiently long time horizons can make structures of all kinds much more energy efficient, without imposing burdensome costs.

Now, spray foam is an excellent insulator it fills in all the cracks but it is pretty high embodied energy, and, sprayed in cellulose or blue jeans is a much lower energy alternative to that.

Given this flow rate and the 96 metre fall, it is possible to calculate that the Inga Falls alone has a potential to generate 39.6 GW of mechanical energy and nearly as much electrical energy.

So that's the question. The question is, how much they are doing a similar amount of processing, similar amount of data the question is how much energy or electricity does the brain use?

While CFLs are more expensive to buy, they are much cheaper over their lifespan, because they use much less energy (even more so with the cost of CO2 factored into taxes on electricity).

The international community must make a much more serious commitment to renewable energy, efficiency, and other environmentally friendly energy sources. A business as usual approach would mean that by 2030 carbon dioxide emissions would be 70 higher than today, and renewable energy would account for a mere 4 of total energy usage, up from 2 now.

We are burning, as you heard, so much energy, not understanding that such an unsustainable way of life cannot last for long.

The much discussed energy water food nexus applies to mineral resources and land use as well, forcing extractive industries to address it.

Record high food and energy prices, combined with sharply rising wages in China, are pushing up inflation in much of the world.

And much of the additional spending needs be made by households, driven by a profound change in social attitudes to energy efficiency.