Wind and solar are expensive, inefficient and intermittent.
Batteries won't solve the problem.
Brilliant mathematician David Wojick explains the unforgiving numbers in an important article at CFACT.org:
First comes the cost of utility scale battery facilities. This is much more than just the cost of the batteries. At utility scale these are large, complex facilities. Connecting all of the batteries involved and getting them to work properly together is a big challenge in itself. AC-DC-AC conversions are also a big deal, plus there are buildings, transmission stuff, etc...
Suppose we want to store enough juice to back up the wind farm for just one day, when the wind speed is too low to generate any power. Let’s say we simply need 100 MW for 24 hours, or 2,400 MWh.
At $1.5 million per MWh that is a whopping $3,600 million or $3.6 billion. In short, the batteries cost 24 times more than the “backed up” wind farm costs. In fact in this case the battery cost will be the number of hours times the wind farm cost.
This huge cost certainly makes the wind farm unaffordable, but it gets much worse. Under standard conditions a wind farm produces no power around 25% of the time, due to low wind conditions. Low wind periods of up to a week are fairly common, created by stagnant huge high pressure systems. The power battery system has to be big enough to accommodate these long periods of no wind power.
A week has 168 hours so we need 16,800 MWh of battery storage capacity, at the enormous cost of $25.2 billion, just to make a $150 million wind farm reliable. This would obviously be absurd, which makes the whole idea of battery backup absurd. Even if the cost of batteries were to come way down, say by 90%, the cost would still be wildly prohibitive.
Climate campaigners, and the corporations cashing in on wind and solar subsidies, like to say that the wind and the sun are "free." The reality cannot be further from the truth.
Unfortunately, batteries do not present a viable means to get wind and solar to make sense.
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Originally Posted by Mike
My generator charges the batteries and is controlled by the system voltage. If I was hooked to the grid I could sell power during the day and buy it at night. But if I was hooked to the grid I wouldnt go thru the battery brain damage either.
