Top products from r/energy

We found 50 product mentions on r/energy. We ranked the 161 resulting products by number of redditors who mentioned them. Here are the top 20.

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Top comments that mention products on r/energy:

u/cryptorchidism · 1 pointr/energy

>How do we determine the price

The same way we determine the price for anything -- by summing up the component costs. Sure, it's a distributed computation performed by many actors, but that's still fundamentally what's going on. (to head-off the cost != price debate, I'm including "profit" as a 'cost' here)

I'm of the opinion that markets are great means. Once you determine what a society values, a market is an excellent way to optimize those values. However, where I disagree is when the market is used as an end, when the market itself determines what it values.

Heresy, you say!

Contrary to libertarian thinking, I've come to discover that individuals are actually really quite lousy at figuring out what will make them happy. Of course, they're not helped by (imho borderline fraudulent) advertising, designed to make you think that new storm windows will give you more time to spend with your family.

As a Libertarian, I'm sure you acknowledge, as I once begrudgingly did, that people aren't quite rational actors. But we're close enough, right? It's worst than that though – we're not even close. Too harsh? Ok, so maybe we're rough approximations, but the small cracks where mushy brain stuff corrupts pure utility maximization are levered wide open by psych-savvy propaganda agencies. We may appear rational on a small scale, but if you sit back and look at the aggregate of our actions you see that the Invisible Hand has been replaced with the Subliminal Boot.

I don't expect you to agree with everything I've written, but if you're interested in understanding why I 'left the fold' so to speak, check out the excellent (and certainly not anti-capitalist) documentary The Century of the Self (here on google video). It really drove home the imbalance of power between the big guys and the little ones.

A good read about how this applies to ecology is Deep Economy (amzn).

EDIT: Note that I'm not suggesting that the gov't tell people what to buy. History has shown us that that can get really ugly. If you're way smarter than I, you might be able to translate these discontented ramblings into some action items.

u/Acanthas · 0 pointsr/energy

You might find this book interesting-
Solar Hydrogen- The Fuel of the Future

>Renewable hydrogen produced using solar energy to split water is the energy fuel of the future. Accelerated innovation in both major domains of solar energy (photovoltaics and concentrated solar power) has resulted in the rapid fall of the solar electricity price, opening the route to a number of practical applications using solar H2.

>New thermochemical water splitting using concentrated solar power (CSP) as well as CSP coupled to electrolysis has the potential to convert and store solar energy into clean hydrogen using a tiny fraction of the world's desert area to meet our present and future global energy needs. Photovoltaics, in turn, has the versatility required for supporting the creation of a distributed energy generation infrastructure in developing countries especially now that the price of PV solar electricity has fallen to unprecedented low levels.

>In all these cases, solar H2 will be used to store energy and release it on demand either for fuel cells (to power homes and boats) or internal combustion engines and turbines (for powering cars, trucks and in thermoelectric power units). This book on solar hydrogen is unique in its field and is a timely treatment of a hot topic in industry, academic, political and environmental circles. With reference to many examples as well as to new technologies, this accessible book provides insight into a crucial technology for our common future and numerous colour pictures contribute to the book's readability.

>Written by experts in the field who are engaged at the forefront of research, the book supplies readers with last minute insight from the frontiers of research. The book will be of interest to Politicians, solar PV companies, hydrogen and sustainability researchers, environmentalists, managers in the automotive and nautical industries, undergraduate and graduate students in physics, chemistry, energy and materials science.

Hydrogen produced with renewable energy is the very definition of De-Centralized Energy Production. Anyone with water and electricity can make it.

u/JAFO_JAFO · 4 pointsr/energy

> The scientist dismisses concerns some people have that hydrogen fuel, clean or not, will bring its own problems into the market.

I think the scientist (and the author) need to provide more detail of their dismissal of the problems...I'm no expert, but it does seem like there are more and bigger challenges for hydrogen to overcome, which also explains why it isn't disrupting existing industries like the battery electric vehicle is.

To start, Elon Musk raises a number of problems with hydrogen powered cars in a few minutes and I've not see substantive information refuting his assertions. If you want to replace gasoline, you need to spend a billions (maybe even trillions) replacing gasoline infrastructure.

Tony Seba speaks on this in a Stanford course BUS227 lecture. Even in commercially the costs can come down, the efficiency of a delivery network (energy from the source to the point of use) for hydrogen (hydrogen pipes or tanker trucks) will probably never match the efficiency of a battery electric network, especially if the energy produced comes from solar on the roof or local microgrids with very low transmission and distribution costs. Tony does this and it's about 19% - 23% efficient for hydrogen vehicles, and 70%-90% efficiency for battery electric (for reference ICE is 17-21% efficiency). So from a technology standpoint, hydrogen doesn't have an disruptive efficiency benefit when compared to battery electric cars, especially when a transport and distribution network is mostly in place already.

u/chopchopped · 2 pointsr/energy

If solar electricity is .01/kWh, a Kilogram of Hydrogen costs a whopping $0.50 CENTS! (50 kWh/Kg). A Toyota Hydrogen Mirai fillup would be $2.50- to go 300+ miles- but only take 3 minutes. This is why Solar Hydrogen is the fuel of the future- and the future is now. So when people keep asking why Toyota, Honda and Hyundai are pursuing hydrogen tech, maybe these companies have thought this out a bit more than others who couldn't see cheap renewable energy. The last laugh is the best.

u/clausy · 1 pointr/energy

Trading Natural Gas is a good read on how the financial and physical gas markets work written by an old colleague of mine (Enron trader).

Energy and Power Risk Management is good too, although I can't ever get past the 1st chapter, so if you're an economist you might do better.

They're expensive though, so try a library!

u/gershom45 · 4 pointsr/energy

I recommend a book on this subject that I found well worth the read. This author sees fast reactors as the answer to most of the drawbacks to nuclear power.

I'd be interested to hear if anyone on reddit has read this book and what they think.

u/Iamyourl3ader · 1 pointr/energy

> I provided you with seven general examples. Let me provide you just one specific example , out of curiosity of how your mind will twist and bend to make it not true

Because I understand the basics of certifying electrical equipment. The wind industry uses components designed for the wind industry.

> Xantrex C60 Charge Controller for Wind and Solar Generators

LMFAO. I should have expected this.

This has nothing to do with the wind industry. Nobody is buying residential wind turbines right now. It isn’t relevant.

> In terms of subsidies the most i would like to get rid off is the political and military expense of courting and keeping peace and order in oil rich countries. No wars for oil.

There isn’t any “wars for oil” right now.....

> But another one is disposal cost. We all have to pay for removal and proper disposal of our trash. Ewhen it comes with fossil fuels, disposing of the very harmful by products of fossil fuels is free, but it has a huge environmental cost in terms of climate change amd air quality.

That’s not a fossil fuel subsidy...

> We should all pay to chuck our fossil fuel garbage into the air we breath.

That’s and externality, not a subsidy. Might I suggest Econ 101?

u/[deleted] · 2 pointsr/energy

>super expensive bulbs

CFLs are, like, a dollar. Incandescent bulbs? About 50¢.

The price differential is almost negligible. LEDs, on the other hand, are substantially more expensive than CFLs, even when accounting for energy use. They're still cheaper than incandescent lights, though.

u/kolm · 2 pointsr/energy

An excellent general book on electricity and more generally energy trading is the book by Eydeland and whatshisname, and it's not outrageously overpriced either.

u/eleitl · 1 pointr/energy

Neither methanol nor its derivates are sources of energy, if renewable. They're energy carriers, just like hydrogen. As such EROEI doesn't apply here.

u/Archimid · 1 pointr/energy

I provided you with seven general examples. Let me provide you just one specific example , out of curiosity of how your mind will twist and bend to make it not true

Xantrex C60 Charge Controller for Wind and Solar Generators

In terms of subsidies the most i would like to get rid off is the political and military expense of courting and keeping peace and order in oil rich countries. No wars for oil.

But another one is disposal cost. We all have to pay for removal and proper disposal of our trash. Ewhen it comes with fossil fuels, disposing of the very harmful by products of fossil fuels is free, but it has a huge environmental cost in terms of climate change amd air quality. We should all pay to chuck our fossil fuel garbage into the air we breath.

If we did just one of the two I mentioned fossil fuels become uncompetitive.

u/yoda17 · 1 pointr/energy

The first and by far the most important step is to become conscious of your energy use.

To start, buy one of these
and one of these.

u/ItsAConspiracy · 3 pointsr/energy

This is great. In the "make fuel from air" section of my climatecolab contest entry I advocate several ideas like this, including the Green Freedom plan mentioned in the presentation. Other options include STEP and methanol. Hadn't come across the ammonia idea.

I can't edit the entry right now while judges pick finalists, but I've added an ammonia link in the proposal comments..

u/Independent · 1 pointr/energy

For <$20 you can get a Kill a Watt and measure every 110V device in your house to see what devices are power vampires in both the on and off modes. Also, I would highly recommend plugging all electronic devices into a surge strip and simply turning off the surge strip when not in use.

u/PortlyPlatypus · 1 pointr/energy

This is a great book for you to check out:

It focuses on some of the problems with our current, oil-centered economic model, and how we need to change to a more local, community based system. Particular emphasis is placed on the fall of industrial agriculture, and the emergence of smaller, local farms.

u/Sunny_McJoyride · 2 pointsr/energy

Well I haven't read Malthus, but I have read a modern take on it.

u/icarusrex · 2 pointsr/energy

Bill Gates recommends this book. I wanted to but have not (yet) read it.

u/Apply_Science · 2 pointsr/energy

You can buy it from Amazon India

Edit: that's the paper copy (hardback or paperback). I don't know which e-book retailers retail in India, so I can't advise where to look if you want an e-book. If you're at a university, check via your library.

u/eyefish4fun · 3 pointsr/energy

Depends on which nuclear power you are talking about. There is a case to be made for Energy cheaper than coal

u/leavage01 · 2 pointsr/energy here it is... let me know if you have questions
-nuclear engineer

u/technologyisnatural · 2 pointsr/energy

Perhaps ...

Fundamentals of Power System Economics

just be aware that it is 10 years out of date.

u/hitssquad · 6 pointsr/energy

Chernobyl Unit 4 was a military plutonium-production reactor making weapons-grade plutonium for nuclear warheads. To do that, it needed to have its fuel rods changed out once-a-month (and then reprocessed to extract the plutonium), and thus couldn't have a containment-building around it. Leaving the fuel rods in for the 18-24 month fuel-cycle that commercial reactors use would allow too much of the wrong plutonium isotopes to build up, thus rendering the resulting plutonium in the rods non-weapons-grade.

No commercial nuclear power reactor has ever been used to make plutonium for warheads. See: Megawatts and Megatons by Richard Garwin and (Nobel Prize laureate {in Physics for 1992}) Georges Charpak:

u/uin7 · 2 pointsr/energy

If you get a 12 volt fan it will use about 1 amp, so 8amp hours for all night = 20% of carbatt capacity. Some car batteries will only do that every night for a week before they start to suffer, some will do it for a few months.

This sort of thing looks intresting:

"150 Watthours" lithium Ion battery pack (rather good), "100" Watt solar input , built in 100 watt inverter (that's lowish power but still useful) and usb and 12 volt outputs. cost $160

the specification of the solar input may be questionable, limited to 25 actual watts and nominal 13~14 v level (MC4 connector). That may or may not be compatible with nominal 100 watt, 12v or 18v panel setups.

Then you'd just need a $20 12v fan, and bargain lightweight solar panel deal...

"50W" bendable panel kit for $100 ?

There is a "100W" version for $170 - possibly overkill.

1 kilogram, frameless :

u/ioncloud9 · 5 pointsr/energy

Try this:

Tells you how much power draw is happening. Your TV and router use a VERY small amount of power. Things that use a lot of power: furnace, hot water heater, electric heat, AC, incandescent bulbs, desktop computers that are always on, old appliances like an old fridge, old dishwasher, ovens. $300 does seem excessive. Check the bill and see what your fixed delivery fee is and the price per kw/h. Where I live its around $0.11 per kwh and the fixed connection fee is about $11 a month.

This is also the winter time and your heating, even in NC might be forced hot air with an electric heating element. That is crazy power hungry and costs a lot to run. My average bill is between $100-$130 a month and last January we had a cold snap with 7" of snow and it cost me $250 a month for electricity because of the extra heat. Try turning your heat down to 65. Now that the winter is nearing an end, you might see your electric bill go back to some semblance of normal for a month or two before AC season.

u/mhornberger · 0 pointsr/energy

> Your argument would be better if you could provide some numbers.

There are numbers on the slides in those talks. I also recently read Seba's book Clean Disruption and I'm almost done with The Grid. Both have ample sources. All of the talks refer to specific real-world cases where deals have already been made, investment and divestment decisions already made, based on the current state of the technology and the economics of the issue. There is no hippie stuff in any of this. All of these talks use exclusively economic arguments.

>There is potential for future improvements, but this assumes R&D and time spent on that.

I consider R&D a given, unless/until our society collapses. All technology comes from and depends on R&D. New nuclear plant designs and new extraction and refining methods for natural gas also assume R&D and time spent on the problems.

u/agoldin · 2 pointsr/energy

> How's that?

We would have to exploit more of biosphere (rather then augment the parts of biosphere that we already use with such things as mineral fertilizers). We would need to use much more arable land, destroying remaining wilderness. The total efficiency of anything we do would be greatly reduced. Mass starvation would follow really fast.

Apparently no more then the half of current Earth population would be alive now if not for this invention ( Vaclav Smil, )

Industrial agriculture allows as to have much lower impact on biosphere that would be possible otherwise.