Eric Hanson wrote:I totally agree with your thoughts on habitat loss from hydro. At least in the US, that last hydro ship sailed back in the 70s, but elsewhere these plants are still going up. Further, hydro power is sort of but not really emissions free. A real conundrum now that we actually have them.
Eric Hanson wrote:Actually I have heard of that as well but in the context of reviving the Aral Sea. In my personal opinion, the destruction of the Aral Sea is the single greatest environmental crime ever.
Chris Kott wrote:I think electric systems with small-efficient petroleum power plants are a great transitional technology until batteries catch up.
Eric Hanson wrote:I don’t know how fast or even if these batteries will develop. The lithium ion battery was developed largely for the power tool industry. These batteries were s huge improvements over the previous nicad batteries. Nicads were notoriously heavy and did not have great runtimes. My old nicad battery packs for my 18 volt ridgid tool set were 2 amp hour batteries and were HEAVY! The new batteries for the same tools are 4 amp hour batteries (coincidentally the same physical dimensions) and are LIGHT! But honestly, I can just barely use up a single 4 amp battery even after a day of heavy use. I was once hammer drilling into cement and driving in Tapcons all day and only used up 1/2 a charge. 4 amp hour batteries are plenty for me, but my tool line now has 6 and 9 amp hour batteries.
I am not certain what one does with a 6 amp hour battery, let alone a 9 amp hour battery, but the technology is mature, the market big, and the need just about right for lithium batteries. I am also not certain what force would drive a change in battery chemistry right now, but if it could be done, electric cars could have some real range to them.