3 ms·
What's the total ROeI (return on energy invested) to engineer, build, deploy any piece of renewable? Multiple decades. What is is with nuclear? A day? A few wee
by slackfan 4y ago
What's the total ROeI (return on energy invested) to engineer, build, deploy any piece of renewable? Multiple decades. What is is with nuclear? A day? A few weeks at most?
That's why I point out the physics bit. This isn't about the cost, this is about being able to generate energy, not just try to build what is in essense a perpetual motion machine.
- Panzer04 4y agoIt’s on the order of a few years for solar and wind, if I recall. It sounds hilariously optimistic to me that ROEI for nuclear would be days/weeks. The amount of infrastructure required to support a nuclear plant is huge. Regardless, so long as ROEI is reasonably positive, then cost is all that really matters (and regardless cost should include the effects of ROEI anyway)
- Schroedingersat 4y agoLook up an LCA or fermi estimate it yourself. It's roughly on par with solar (4mo-2yr depending on just how unreliable it is). The biggest part they don't usually include is a couple thousand people driving to and from and working for 20 years, but even that is tiny. The mines (especially in a mass expansion scenario) are a little worse. Each fuel load takes up to a few months to pay off from a low yield open pit mine. The industry always uses Ranger or Cigar Lake for comparison which are anomalously high yield.
- Schroedingersat 4y agoThe EPBT of new solar (<160 micron wafer monocrystalline on simple stakes) is 4 to 18 months depending on how far you ship it and what the weather is like. New onshore wind is about 6 months. The nuclear plant is a few months to a couple of years, but each load of fuel is up to 3 months in every six years depending on where it comes from and how it is enriched. All are firmly in the category of "you're lying and spreading fossil fuel propaganda".