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Comment The utilities have reason to be upset (Score 5, Informative) 514

Many of the utility companies, such as the ones in Arizona and Hawaii, are griping about people adding solar PV to their homes. These people have, typically, used Net Metering; any power they produce in excess of what they consume at any moment is fed back into the grid and, when their demand exceeds their supply, they draw from the grid. The utility company gets to "reimburse" them for the power they contribute. In some areas (California), 1 kWh contributed during peak hours = > 1 kWh they can withdraw during off-peak hours. But that's pretty generous; most power companies don't even like 1 : 1.

If you put enough PV on your home, you can eliminate your electric bill. At which point, many utilities argue, the costs of maintaining the grid (that's rolled into your electric bill, but not as a separate line item) are covered by the less-wealthy. The poor are subsidizing the grid for the wealthy, they argue. And they argue, further, that they should be able to charge people who are using Net Metering even if they ARE producing as much power as they're consuming.

Where I live, I pay a monthly connection charge ( < $20 / month) + $0.085 / kWh. In short, my electrical co-op breaks these out as separate line items on the bill. Even if I put in enough PV to go Net Zero, so long as I'm connected to the grid, I'm at least paying the monthly connection charge. The Arizona utility wanted a connection charge / kWh installed PV, to the point that the homeowners who installed the PV ended up paying the same, without or without the PV. In short, they wanted to eliminate any incentive to add PV and connect to the grid. They did get approval for a connection charge / kWh installed, but it was a fraction of what they wanted.

In Hawaii, where power is routinely $0.39 / kWh (it's made, largely, from imported petroleum), solar PV and Net Metering are so widespread that entire neighborhoods are producing excess power during the height of the day. It's to the point where HECO gets to veto whether or not you can add PV to your home; you have to get permits from them and they're getting harder to acquire. Because the transformers which convert distributed power (typically lower frequency and higher voltage) to the household power (60 Hz / 240 VAC split-phase) are made to work efficiently, one-way. Going the other way, they are considerably less efficient. If you are a net producer and your neighbor is a larger, net consumer, you're supplying your neighbor and the local transformer simply converts less power going into that neighborhood. When the entire neighborhood is a net producer, the transformer has a problem. So they limit how much power can be produced in each neighborhood.

I used to think this was all about the power/utility companies trying to defend their bottom line. That's still part of it, but I've come to realize there are technical reasons, too. Installing efficient, bi-directional transformers would require:
  1. installing a second, bi-directional transformer
  2. taking down the power to an entire neighborhood while they switch over
  3. decommissioning and moving the old transformer

at considerable expense. And that latter part, well, you KNOW they're not going to let their executives and/or shareholders eat that cost. And many utilities are regulated, such that they have to get approvals for rate increases. Which aren't easy to get. So there's technical reasons AND financial reasons for the utilities to grip.

Put a battery pack on your home, like one of these. Get an inverter which feeds excess to the battery and NEVER exports to the grid. The power company loses their only technical reason to gripe, because you are no longer doing Net Metering. At that point, it's all about the Benjamins.

Indeed, if you get to the point where your home is truly Net Zero, long-term, you can go completely off-grid. At which point they no longer have a say in the matter.

Comment Re:gosh (Score 1, Insightful) 164

Let me put it very simply: because I have no power to vote for or against American politicians, they should have NO power to influence my life.

So, should China have had any power to influence the lives of people in Japan when Japan started its whole Pacific Rim debacle some decades ago? Should the people of Eastern Europe have considered it just too rude to think about modifying the capabilities or behavior of their friendly neighbors, the Ottomans, as those neighbors gathered up a head of steam and sought to spread their friendly culture westward?

Do you live in a country that begins its legislative sessions with group chants about the destruction of other countries? Does your country aggressively support groups that state their objective of slaughtering others specifically because of their religion and/or heritage, and then indeed actually go and help them do it? Do you really think that the world isn't connected, and that people bent on an apocalyptic world view aren't a good fit for having the leverage of nuclear weapons as they seek to control, among other things, major global shipping lanes?

Do you think that just because you don't think someone else should be able to impact your life, that that will actually stop someone who thinks you should be killed for allowing your daughter to read, or for trimming your beard, etc., from not exactly seeing the world in a way reciprocal with you? Being an isolationist doesn't work when someone trapped in a brutal, medieval, theocratic mindset thinks you're suitable only for death, and thinks that isolationism by others is for the weak, and is to be exploited.

Comment Re:WTF? It's Methanol (Score 1) 486

Methanol is part of the process. But it's not the end of the process.

Gasoline and diesel aren't good for you, if you get physical exposure to them. Methanol makes them look like water, by comparison. There's a reason why very, VERY few places use methanol as a fuel. It's a potent neurotoxin, very carcinogenic and exposure to the vapors from it can cause permanent blindness.

They create methanol, as an intermediate step in the process, but they process it further to make it into longer-hydrocarbon-chain fuels. The main component of diesel is one of them. Not as clean, but much safer.

I'm partial to DiMethyl Ether (DME). Chemically similar to propane/LPG, and equipment for storing/transporting LPG works fine for storing/transporting DME. Propane heaters, stoves, etc. run on DME without further modification. Cars which are converted to run on LPG run, with no further modification, on DME. It works well in diesel engines, too (better than propane/LPG; as with a spark-ignition engine, some conversion is necessary). And it's a good turbine fuel. Yes, you need propane-like tanks (DME needs about 5 bar pressure to liquify) but it burns really clean. Indeed, since it has no carbon chains (formula: CH3-O-CH3), diesel engines can burn this and have ZERO particulate emissions. Russia and Japan have been making it from Natural Gas for a couple decades, because both countries have significant "stranded" natural gas supplies and DME is easier to ship and store.

Comment Re:danger vs taste (Score 1) 630

Except they aren't losing weight, they're just gaining weight at a slightly reduced rate.

But ... the administration says that slightly reducing the rate at which we add on trillions more in debt is a proud accomplishment. So, this has to be similar.

Comment Re:So they've invented the plant? (Score 5, Interesting) 486

Not really. Plant metabolism is usually < 10% efficient at turning sunlight, CO2 and water into useful biomass. And the process for turning useful biomass into hydrocarbon fuels is < 100% efficient, so solar -> fuel is very low.

In their case, they're using intermittent power, from wind and solar, to do a modified Sabatier reaction and make methanol, which then goes into an integrated Fischer-Tropsch process to make longer-chain hydrocarbons.

The resulting solar -> fuel conversion efficiency is HIGHER than going through biomass production.

Comment Re:times smaller,,, (Score 1) 60

I get it. It's just too much trouble for you to choose between multiple ways of saying something in order to be succinct instead of vague. People who don't value clarity never realize that they people they're talking to - every time that happens - value that communication (and the person attempting it) less and less over time.

What's so hard to understand? This forum is full of people correcting others' poor use of communication when talking about everything from natural selection to global warming to employment demographics. Someone makes a sloppy choice of phrase, and the simple thing they're trying to convey turns into a four-step back and forth during which everyone from trolls to the merely dim decide to screw up the thread or just rant because the OP couldn't trouble themselves to just speak clearly in the first place.

This particular lapse in clarity, which comes up regularly in lazy science and technology reporting, isn't the point. The larger point is the grinding erosion in careful communication, and the erosion in clear and critical thinking of which that is an indicator. You think this is about ego? It's about understanding the power and value of properly nuanced communication, especially in the shortened format that venues like this tend to encourage.

I need to learn English? What you're really saying is, I need to forget English, because it's just too much trouble to quickly sort through the differences found in several ways to say the same thing, each of which contributes to a more quickly digested communication of different ideas. You're cranky because I'm not a fan of lazy thinking, and the fact that you think "learning English" means forgetting how to distinguish between different words is exactly the larger problem I'm pointing out.

Comment Re:times smaller,,, (Score 1) 60

There is nothing in there constraining SizeA or SizeB relative to anything else, just the size relative to each other.

No, no constraints in that sense. Just the larger constraints introduced by the fact that the purpose of saying anything at all, in that context, is to communicate something meaningful about A's size. And by choosing the "ten times more" construction, part of what you're communicating is the fact that B, the thing to which you're comparing A, is by implication already considered small. That format (rather than saying, "A is a tenth B's size") is a choice of words that communicates the understand that B is small, and A is even more small. The phrase "ten times smaller" is using the word "smaller" in the sense of "more small."

The words "ten times" is a multiplier. It's used, in a comparison, to say that one value is LARGER than another. In this usage, the smallness of A is ten times larger than the smallness of B. Trotting out that multiplier is a deliberate choice made to focus on smallness in both A and B, with A having ten times more of it. That doesn't describe the size of B, but it communicates that notion that B is already - in the scheme of things - considered small, and A more so.

Comment Re:times smaller,,, (Score 1) 60

It's a shame that your own literacy is so limited, and that your own ability to parse the differences between words is disabled by a lack of vocabulary breadth. That's got to be frustrating. Or maybe not, since perhaps ignorance is bliss in some way, right?

Saying that something is "ten times smaller" is like saying "ten times more small." The phrase "ten times" is a multiplier. It means that you're describing an aspect of something, and saying that there is ten times as much of that aspect. In that usage, the aspect you're describing and comparing is the smallness.

By choosing that construction ("A is ten times smaller than B"), you're deliberately focusing on B's size, and implying that the smallness of B is the thing that's being multiplied ... that B's smallness is important in what you're communicating, and that it's of note because A's size is even more so (small, that is). If we're not trying to convey B's smallness as part of the concept being communicated (perhaps B isn't really thought of as small at all, in the scheme of things), a different construction makes more sense. Makes for better communication: "A is tenth of B's size." We're still describing the relationship, but doing so without including words that suggest B's size is already considered small.

That you don't have the cognitive and communication skills to understand the difference, or that you DO, and prefer to have communication dumbed down and muddied, and require more back and forth to clarify what you mean, says a lot about you. Which is unfortunate. That you think you have to insult someone else in order to feel better about it is just kind of pathetic, really.

Comment Re:times smaller,,, (Score 1) 60

That has nothing to do with the wording people are arguing over

No, that's EXACTLY what people are arguing about. You say "A is ten times smaller than B" when B is already understood to be small compared to something else. The implication in that sentence is that B is already known for its smallness, and A is even smaller. Except, people use that same construction even when B isn't considered small. They use that incorrect connotation when what they're really trying to say is, "B is big, but A is only a tenth as big."

Comment Re:times smaller,,, (Score 1) 60

Just like every time someone says, "Product A is $2 cheaper than Product B," I have to guess that, "Product B is $2 more than Product A." Maybe we shouldn't have slept through math class.

Math doesn't help in the absence of context. If Product A is $2 cheaper than Product B, but Product B costs $10,000 ... does it really matter? That's a little different than Product B costing $3, right? Right. In real life, context actually matters, or you're just wasting people's time.

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