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Domain: elp.com
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Comments · 8
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Buried lines are expensive
It seems logical in a place prone to get hit at least once if not more a summer by a hurricane that there should be an emphasis on burying the lines, particularly the high voltage transmission backbone lines.
Puerto Rico get hit by a hurricaine about every three years on average.
As for burying lines, it's a fine idea but an expensive one. Burying lines costs about 5X as much per mile just to lay the lines. And maintenance becomes an issue when you have to dig to solve a problem. Remember that Puerto Rico has a lot of financial problems so spending extra to bury the lines is going to be difficult for purely financial reasons if nothing else.
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Re:Laying cable
Great! Can you please elaborate? Particularly about equipment costs and stuff?
Cost is a complicated and depends on the situation but a very simple case probably would be somewhere between $5000-20000 per user for data cable for a simple run presuming there were multiple users along the route. High power lines can be far more expensive. Underground cable is somewhere between 4-8X as expensive to lay as overhead cable. The biggest costs are typically the civil engineering involved. Especially if you have to dig up or work around any existing infrastructure.
Equipment? Depends on what you are doing and where you are doing it. Ignoring the equipment to hook into existing infrastructure you're looking at trenching equipment, cable feeding equipment, and a variety of other goodies. You also have to watch for buried power, data, gas, water, and sewer lines which aren't always well documented. Dig by hand? Don't make me laugh. To do it right you have to lay the cable below the frost line in most cases which can be several feet deep in many places. I know code near me for a simple drop requires a minimum depth for cable TV cable of 18 inches.
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Re:Enron down under
Seeing as we are speaking about wind it's the most costly energy you can get with the possible exception of diesel. So you are shipping expensive energy over distance and large distance which requires expensive infrastructure
http://www.elp.com/articles/po...
Yes it is a loss.
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Re:Enron down under
IA typical new 69 kV overhead single-circuit transmission line costs approximately $285,000 per mile as opposed to $1.5 million per mile for a new 69 kV underground line (without the terminals). A new 138 kV overhead line costs approximately $390,000 per mile as opposed to $2 million per mile for underground (without the terminals)."
http://www.elp.com/articles/po...
You really should try and look. You might learn something.
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Re:Easier said then done.
Sears, Roebuck was selling gas light fixtures in 1910 because less than 2% of the US was electrified in 1910.
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Re:A different source
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No good info yet
Even EL&P's coverage doesn't say anything substantive. When we start seeing articles with diagrams of the feeders, maybe we'll know something.
An enclosed stadium in Louisiana in winter shouldn't be anywhere near its electrical load peak. No air conditioning load.
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Re:glow, baby, glow!
A major part of the expense and construction delays are due to every reactor design being one-off and requiring individual approval by the government. The industry is now (finally) trying to get 'type acceptance' for a few well-engineered designs that can be built exactly to spec much quickly and for a lot less money.
My local utility had chosen (see legend) the GE ESBWR but has switched to the Mitsubishi US-APWR.