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Dominant Source of Energy in 2040...

What will the Dominate source of ENERGY be in 2040?

  • Biofuels (Algae Based)

    Votes: 0 0.0%
  • Biofuels (Crop Based)

    Votes: 0 0.0%
  • Coal

    Votes: 3 8.8%
  • Nuclear Fission (PWR, LFTR)

    Votes: 3 8.8%
  • Nuclear Fusion (LPP)

    Votes: 1 2.9%
  • Natural Gas

    Votes: 6 17.6%
  • Solar PV

    Votes: 19 55.9%
  • Wind

    Votes: 1 2.9%
  • Other

    Votes: 1 2.9%

  • Total voters
    34
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What you THINK... voting for what you WANT would put coal at a tremendous disadvantage :wink:

Then I think it will likely be coal. Even if developed countries do everything they can to veer away from coal, and China peaks coal production in the 2030's, then the developing world will still more than make up for it. It's quick, dirty and "cheap", and countries are hell-bent on improving their standard of living and providing more for their people, and who can blame them really? It's the classic tragedy of the commons. It will take a truly seismic shift to change this path, and my hope is that the falling cost of solar + cheaper battery storage will be that seismic shift. It is too early to tell though. Countries around the world are still thinking that greater economic growth inevitably means more fossil fuel use, including the U.S. I don't currently disagree, as if you look in the past, that is indeed the case. We need to build a model for the world that can grow and prosper with clean energy, but it's a truly enormous undertaking. But that's what I love about it, it's a great challenge.
 
I suspect we're going to go through phases. Right now there's a move towards solar as a known technology that works from small to large scale.

Nuclear generally has a bad reputation and increased use is going to carry with it the waste issue. The potential for plasma fusion is huge but there's no proven technology yet.

I doubt anything new could become dominant in 25 years so I voted "Solar"
 
Natural gas is already on the cusp of being dominant in electric generation, and with the massive retirements of coal forced by MACT and CO2 regulations, NG will take the top spot absolutely by 2015.

I don't see anything likely to change that by 2040. People tend to forget how expensive generation capacity is, and how much of it we've built over the decades. Just in the three northeast power pools (PJM, NY, New England), we've got about 220,000 MW of generation. In round numbers, that's $400 billion of capital. We don't throw away asset bases like that lightly.

In 2013, electricity generation in the US had the following sources:
Coal: 40%
Natural gas: 26%
Nuclear: 20%
Hydro: 7%
Other Renewables: 7%

And that's just electric generation; if you add in transportation and other primary energy, fossil fuels have an even bigger role. We might all want a lot of renewables in the future, but don't underestimate the inertia of trillions invested in the fossil-fired infrastructure.
 
Natural gas is already on the cusp of being dominant in electric generation, and with the massive retirements of coal forced by MACT and CO2 regulations, NG will take the top spot absolutely by 2015.

I don't see anything likely to change that by 2040. People tend to forget how expensive generation capacity is, and how much of it we've built over the decades. Just in the three northeast power pools (PJM, NY, New England), we've got about 220,000 MW of generation. In round numbers, that's $400 billion of capital. We don't throw away asset bases like that lightly.

In 2013, electricity generation in the US had the following sources:
Coal: 40%
Natural gas: 26%
Nuclear: 20%
Hydro: 7%
Other Renewables: 7%

And that's just electric generation; if you add in transportation and other primary energy, fossil fuels have an even bigger role. We might all want a lot of renewables in the future, but don't underestimate the inertia of trillions invested in the fossil-fired infrastructure.

I agree that Natural Gas will play a vital role in our energy mix for the foreseeable future. I also agree that utilities will be unwilling to replace existing generation with Solar PV at great cost. However, the expansion of Residential solar is playing a larger and larger role... this is an area where utilities have very little control. As the BOS cost of systems falls, more financial institutions offer financing for Solar PV systems and consumer confidence in solar rises the deployment of Residential PV systems will continue to expand and displace existing generation regardless of the wishes of the local utilities. When utility costumers can finance a PV system for $150/mo for 15yrs and displace a $150/mo electric bill that PV system is effectively free.
 
Energy in general... crap; I meant to add petroleum to that list... well, I guess that can count as "other" :redface:

While oil-based generators are in use in places where it is hard to get anything else (islands, Australian outback, for example), it's pretty clear that they can't possibly expand, so I don't think it matters that you left it out.
 
I voted solar, because I think advances in storage technology costs in the next ten 10 years, combined with incremental improvements in solar and growth in electric vehicle ownership, will allow it to reach a tipping point. Beginning with the sunny southwest the ubiquity of solar power will help scaling, and companies like SolarCity will bring down total system costs, allowing it to spread into areas that are currently marginal. The use will be supported on the grid with cheap natural gas back-up, but with an increasingly smart grid, the amount of natural gas burned will contjnue to decrease, even as the amount of natural gas capacity increases.
 
I volted solar because it's the only politically acceptable solution. I'd really like a combined nuclear for the grid and solar for houses combination. I really hope natural gas dies a quick death because I'm not looking forward to the poisoned water and earthquakes fracking causes.
 
If coal is still dominant globally in 2040 the planet is even more screwed than it already is.

It has to be solar. Advances in PV efficiency and decreasing costs along with battery storage should drive the solar revolution in the developed world to the point that it is dominant by 2050 in temperate and tropical climates. Northern countries are a challenge because for half the year they just don't get enough insolation. Those may have to be a mix of hydro and nuclear.

We have to stop burning natural gas and oil. That stuff is poison.
 
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