Energy

In my view, more funding and more R & D is required for fast development of Solar Energy. Indeed, Solar Power has potential to replace other sources of energy in the Future

Mahesh Thapa

USA

The solar experiment has been here for decade now, these utilities are at this point curbing on nuisance value in respect to knowing the proper, most reliable and most efficient units availability, So much so that even I get e mail from people in the Americas and Canada seeking my prices on these wonderful energy accumulators.(I'm research solar powered vehicles) but enough digression.

I believe that there is one element that is not utilised enough to create solar energy and you may laugh at my alternative, it's a matter of economics I guess.

THE ROAD: Yes* the highways and byways around the world are by far the greatest unused useless surface ever to be forgotten by many forms of science.

The road is there as a surface to experiment with for the creation of ruggedised solar panels, (and experimentations of other surface also) with sufficient power accumulation capabilities and with success the highways can be producing power for the nations thereby giving the greatest surface area for this technology to use.

You may say it's not feasible:

what is feasibility it's a set of economics, of possibilities or just plain good management.

The road does what? it's a great way to fly (in you 57 chev) to name but a few.

it's a smoother surface to drive on YES - it's cost effective NO -it produces something on it's own NO. it gets worn out replaced, and cost the road user billions in up keep.

So why not give it some class (esteem) as we enter the electronic vehicle age and produce a road that powers the country. "Copywrite open to all with my complemets mdbobbo"

I don't know much experienceyou have in road construction and maintenence, but if you have even a little(like me) you might not be wondering so much what the feasibility problems are. For one thing, as you said, roads require regular maitenence. Most people think of roads as just a flat space to drive that just lays there on the ground and doesn't move. In fact the constant pounding of multi-ton vehicles rolling over them takes it's toll. The surface paving alone needs to be replaced about every 5 to 10 years depending on the actual amount of traffic, and that's if it's asphalt, and there are no other issues with the roadbed that would cause premature structural failure. You can get a little more life from concrete if it's in an area with relatively stable temperatures so it doesn't fail due to expansion. Concrete also has a high initial cost. Both are relatively simple to repair though. If you constructed a road from some sort of "ruggedised solar panels", whatever those are, I cannot imagine the up front cost, let alone maintanence and repair. Do you even know of a material that has those properties? I would think that if such a thing even existed in a lab somewhere we would have seen news of such a breakthrough on the front page as soon as it was confirmed, whether or not it was even close to economically viable. I could personally concieve of some sort of thermal energy collection. Although converting that into some sort of usable electrical energy source would take engineering skill way beyond my experience(which, in engineering, is zero. I'm a plumbing contractor). I'm sure if someone knew of a way to take small amounts of thermal energy and accumulate it somehow until it could be converted into electrical energy they would have marketed it and retired to Tahiti. I just don't think we have the technology for that sort of thing yet. I do think that we are not using the technology we have to it's fullest potential, but that is primarily due to the fact that it's not enough for something to be better. In human society it also has to either make money for someone or not cause someone else to lose money.

In my view more funds and R & D is required for the development of the projects of solar energy generation. I am completely agreed with your suggestion of use of solar energy. However there is a great potential to replace the energy sources.

Talha Ifzal

talhaifzal@hotmail.com

Sun has a very large store of heat energy. It sends a large amount at a time but sends it in all directions. Only a microscopic part reaches earth.

The amount present in say 10 metre radius is very small not even 1/100th of the energy in a few drops of a fuel like petrol, diesel, kerosene, natural gas i.e. it is not concentrated.

And it cannot be stored and carried.

So, use of sun's energy is limited.

It's true that the R & D on developing the solar technology is really poor. But, the main trouble would be on the vast area size required to produce the output of KW. For example, you would require 100X100 M2 to produce 200Kw. Therfore, area compared to the outage is relevently is not feasiable.

Mohd Hammadi

Dubai

We humans are crisis motivated. When we have no other alternative, we'll do it. If we haven't poisoned ourselves by then.

Development of solar power has not been slow. Solar came first. Solar power can replace other energy sources if we go back to the future.

My Mom had a solar hot water heater for bath water and a solar clothes dryer of steel. The solar clothes dryer was adequate to dry clothes for six kids. Her mom had a similar solar clothes dryer made of chestnut from the 1800's. Solar clothes dryers are cost effective, environmental friendly and use local renewable energy but the 240V style powered by 50% coal is more convenient and very quick.

Let us be honest. Modern alternatives, Impatience, inconvenience, tolerance, diversity, and ignorance of solar alternatives prevent widespread use of solar power in much the same way that heating homes with corn energy is not attractive to many people.

Will solar require Federal funding, federal enforcement, tax breaks, tax incentives, large corporate advertising campaigns, and endorsements by large utilities to create a major job market of highly paid and skillful workers that support local economies. Can local private citizens actually utilize solar energy without endorsement by the major oil companies? Existing off-the-shelf solar of 100 watt continuous can heat any house in America in conjunction with local renewable 34% hydrogen energy encapsulated in small packages commonly called whole kernel shelled corn in a tennesseecornstove. Sun, sand, shucks and corn stalks may be dirty words that repell those that dispel the use of solar energy.

Solar energy is known for centuries in many applications.

Hot water is the simple utilization.

Now, most appliances in home are electric- powered.

So to deliver necessary energy to run them the energy converters must be used. From Sun light to electricity. The Si PV (Silicon PhotoVoltaic technology) panels are expensive and require large surface to produce required power (measured in kW). The efficiency depends also on their location (geographical). I.e. number of Joules (or kWh) of energy received for storage in batteries or sent to electric grid (electrical networks) depends on sunshine hours per day /month / year. You may find proper statistics as a function of geographic location on the globe

Present ROI (Return On Investment) for these installations are 16 to 30 years.

To be in his interst, a resident of a house must have the new panels of ROI = 4 to 7 years.

We still waiting for new material solutions and their manufacturers,

Mitsubishi builds a plant in North Carolina / USA.

Do you know others? Their addresses / contacts?

Joe W

Perhaps low price Organic Solar Cells are on the way to drastically reduce the cost. They can be printed in your Inkject printers and hence can be Home made in minutes. I think some people do not want these to reach public. Some lobby problem I suppose.

Ceratinly cost is a huge hindrence to the current solar cell market, not to mention that they are easily damaged by hurricanes, or other natural phenomen. I think that a futuristic city will have to be able to use the sun's energy and protect from nature's forces.

Using roads, as someone described above would mean creating vehicles that do not depend on friction since ice and snow will clearly be a problem in many industrialiazed areas. Perhaps the magnetic nature of some modern trains is a good solution to that problem.

Shyam writes that Organic solar cells are viable but some market forces are hindering their widespread use. I think it makes the point that the only problem with the development of new technology is whether people will cooperate with one another. When it is made clear to how everyone will benefit from a given course, you generally don't have any problem getting them to cooperate. It's when some think that maybe "the other guy will get more from this than I will, so let him work on it", that's when folks don't tend to contribute. We are selfish creatures. A bit of a philosophical perspective on the subject to be sure, but I still think it's relevent even if not quite constructive.

one of the problems with solar cells (especially Solar Voltaic ) is that they are produced for remote locations where the cost of replacing them are high so cells have to be designed to have very long life with minimum failure times ( mean time between failure) as a result, they are very expensive. However if cells are to be placed where they are easily accessible and easily replaced, they do not have to have such long mean time between failure and can be made less expensive. Less expensive cells would mean more applications and better acceptance Harry L. Goldman

Renewable energy will return back from the future. Present day excuses are void of intelligence. Let's use the common clothes dryer as an example. Why do we all expend expensive coal generated electrical energy for a clothes dryer?

Cost - No Solar clothes dryer cost less than a string. No power source for the clothes dryer cost less than sunshine.

Availability - Everyone has access part of the day to a string, tree limb, or sunny spot.

Size - No clothes dryer is smaller than a string or any flat spot on the earth.

Space - Everyone has the space to hang a string or find a flat sunny surface.

Highway - Why Excuse away the highway for solar power? Pardon the French but less than 0.001% of the median and side berms of the highway are presently being used to hang solar cells that power traffic signals, night lighting, safety observation cameras, ticketing, etc. As previously asked, why not expand the use of public space for public power? Is it because the same public owns and operates the utility that sells power to the public?

Convenience - Could it be that a string is not as convenient as the electrical clothes dryer? Perhaps we are preoccupied during sun light and prefer to dry during night?

Ignorance - Ignor knowledge of solar power. The presence and existence of solar power is not dimenished by existing ignorance. Solar power for clothes drying was common practice prior to widespread use of electricity.

Social Acceptance - Ah! Hah! Is it socially acceptable to hang private clothes in the presence of public sunny spots?

Tidays world is business like. You spend something and you get return on investment. If return is positive, then it makes business sense. People live fast life to survive with ideas and hardly care if that is the optimum way. Life for each person thus differs considerably. You weigh what is good for you now and not what is good for the world. You find out the next day how to survive in new way and set new rules for yourself. This is the life of today for many.

In India, old men used to put up a fruit Garden not for themselve but for their great Grand children yet to be born after their life is over. That tradition is no longer there. you cut the tree to get fire wood and finish your great grandfather's idea in warming yourself just for few hours. 100 years plan gets ruined in few hours. Vision for future is lost and you don't even know your own tomorrow. People do not plan for their great grand children any more. They don't even plan for happiness with their life partners. They think children are burden so not now.

People need to be mission oriented for helping those who have no great vision, but are part of our jouney of life in this universe. I was there, I am there and I will be there in this universe forever gives you thought of living with the universe with lot calmness and clealiness and happiness. You live forever so you plan forever.

Using solar energy is very common. People dry their food and cloths in sun. Now they also cook and light up the house in night. Solar energy storage panels (not solar cells but FL panels) can be inverted inside the house in the night to get light entire night from day time stored energy.

You have to find ways to face nature. You can't fully avoid it as nature has its own plans to run the earth's system. It will not send a notice to you to get ready. You are part of its game plans and it is an arena where we are now to survive and we are at the receing end so face it boldly.

I have a plan to help millions of children in India if I can do that. I hardly have any funds but that never stops me to do what I want to do. You invent new ways and keep trying and never give up. When it is harder to achive, it is also more sweeter to feel, else why some one will ever go to the Everest height. Mission idea makes people to be like God in simple motal life. Believe and work for idea.

Coming back to solar cells, there is lots of Silica on earth in sand. Use it as much we like. There is largest amount of Aluminum in metals so make reflectors, focus energy, make steam and run turbines. Lots of proper plans will help. See how people used wind energy in early time. People do not plan even that much. You you build hourse from cards then what to expect. Did you ever hear of house collapsing in Singapore? Learn from them if you run out of Ideas.

I totally agree with Shyam. We 'live for the moment', but those moments may not be there for our children, grandchildren, or great grandchildren UNLESS we modify our behaviors soon.

The VERY best use of Solar Power is *passive* and mostly free. Our grandfathers and great grandfathers knew this. They planted deciduous trees to shade our homes and workspaces in summer, but let warming light in during winter. They planned and designed their homes to work with what nature gives us rather than fight it. They designed their southern exposure windows under wide porches, so that summer sun was shaded from the interior, but allowed in during winter months for warmth. They planted evergreen trees thickly on the northern sides to slow the winter's cold winds...

If everyone practiced some of these 'tricks', and in our designs, we as engineers USED what nature gives us, rather than trying to 'overcome' nature with technology, we could greatly minimize the problems we are now facing!

Thanks, Shyam and Guest, for seeing sun energy in a different light. I understand both India and China need a cooker or an oven. Ovens are few and expensive commodities in both societies. Why not take a corn combustion oven or corn grill to demo on the next trip. Anywhere people exist also produces local maize, corn, soy, beans, seeds, biomass or kernels. No matter how hot the climate, a corn cooker could be useful. A corn cooker can run without electricity or on limited solar electricity. In the US a corn cooker is relegated as a high priced novelty. The corn grill, for example, is almost extinct and few realize it exist. Some societies would pay attention and toast to the occasion.

If you haven't eaten a corn fed, corn bred, corn cooked "T" Bone, you have missed a tasteful delight. No smoke, no charcoal, no ash but with the sweet smell of corn bread - Wow! what a feast that few have found! Great grandfathers didn't cook with corn because corn cost then the same as now with no adjustment for inflation.

There are two ways to look at solar energy.

1. Using it for personal use at home, office or while on the way

2. Mass production and mass storage of energy

For personal requirement, solar energy use for building heating, small power on the move, night lamps power are ideal things. However, using for cooking may be cheaper and convenient only for very poor nations and they can't even buy a cooking pots. You can go up the sky to get your meal cooked in 20 story building or keep food in windows.

Industrial use requires collection of solar power from a massive area and focussing it on a point requires large size reflectors, handling problem, large space, and weather mercy. However this has been tried.

What I feel may be good is to use power for medium leven industries where drying, cooking may be of benefit.

It can also be useful in utterly remote area where there is no way for power line to reach.

One special use I found for these is a formation of a chain of road side power sources for charging electric cars. This can be clean energy, and free energy except of initial capital investment which car companies and the government can share 50-50. After all you are saving on import of oil, getting country clean, and you don'r have to run power lines to light up the roads.

I have seen one garbage processing can that uses solar power to automatically compress the garbage and keep in highly conpressed cubes and needs no man to help in this operation. This development must be promoted and is very environmental friendly.

[quote]one special use I found for these is a formation of a chain of road side power sources for charging electric cars. This can be clean energy, and free energy except of initial capital investment which car companies and the government can share 50-50. After all you are saving on import of oil, getting country clean, and you don'r have to run power lines to light up the roads.[quote]

Thanks for that comment I know that in Sweden there are many of these road side scheme's. I also have research changeovers to solar highways utilising the Maglev principal for high-speed intercity traffic where the wheels of the Solar powered car fold to horizontal so that :

1. the vehicle in standard mode (wheel vertical) can be used as a standard transport

2. the vehicle in maglev mode (wheels horizontal) would ride on the maglev type roadway(maglev incorporations under the same Solar powered vehicle). with in this system the highspeed roadway is especially designed to incorporate solar units within that highspeed system to collect the energy that will ultimately refuel the solar powered vehicle on the go at speed in excess of 600km + at the other end of the highspeed maglev type roadway the Solar powered vehicle can revert back to standard vehicle and drive you all the way home on standard roads amongst standard traffic.

You may say that's a big cost for a special road way for a system originally designed for many tons of train and that is ultimately my main point.

Where the solar cars to have such a highway the cost is less prohibitive because of the lessening of the load values that the highspeed road needs to handle, Solar cars are not that heavy at present at lease half the weight of a standard vehicle of the same capacity and you can now subtract the drive train and gearbox and engine weight in that formular making more capasity for passengers and small to medium sized freight.

The automation can also be brought into effect with a change over system like this allowing the road makers suffecent of time to expand the system.

In the interim a flat transfer paneling can be constructed on standard roads, along with the first highspeed maglev type roads spaced sufficiently close together to be able to have the new Solar cars range maximized in distance capability without increasing the battery load of the production solar cars.

I've searched far and wide and most system of this change over type ideas have been from especially built transfer units to be affixed to trains that travel the distances for them you drive on bolt up (engine gearbox and all) and at the destination there is a waiting time interval before the whole mechanism is un-attached and you move on with the eventuality of having bottle necks at these change over point.

That is why I've taken the trouble to invent a newer system that incorporates the completeness into one solar vehicle.

I've looked from the angle of absurdity to the sublime and seen what I find constructive, versatile and affordable in electrical change over plans capable of being employed in such small enterprises as theme parks zoo's and such the like, to global highway superstructure on the ground or raised in the air matters not, except for high construction expense.

Having driven my self on the interchanges and highways of the Canadian and America's systems, I can not believe there would be much opposition to the relevant cost (yet unresolved). the costs of the said solar vehicles world be in the range of $60,000 to $80,000 dollars each with a DC alternative SPssATV system complete with maglev ability built in and a free standing range of estimated 60km to 100km on normal roads and much more accessible with the previously mentioned high speed refueling intercity lanes (all at the easy of a lane change) complete with DSDN ruggedised cable switching interlocked broadband and Electrification of the national grid at the project completion.

I can not understand why there's no interest except for one a invite to the Texas conference on nano technology which without an in put collateral I must sadly decline.

although I have got a rudimentry white paper ready, so annoy me for more info at www.treezone.co.nz to chat direct and take alook at the many other projects for cleaner enviroment thats presently under construction.

You have observed rightly.

In fact solar powered battery or solar charged battery powered cars should cost much less than normal cars. Unfortunately they are same people who make other cars so they don't want to scrap their plant, put new plant, through out old engineers, get new engineers in, put lot on advertizement. They are just keeping quite and are waiting some one to do it for them. Who so ever is doing for first time is also paying for all those problems, which causes price hike. Not so easy.

When you do somehting at home, you only have to decide and you do it.

At corporate, to do something, you have to have money, project that will start the nest day and will make profit and will not affect your current profit. To have anew project, one need public funds, their own funds and perhaps few years time.

If you refuse to buy those car you use now then they will rethink in new cars as investment for future business else will smoke cigars at your cost and at the world cost of ++++CO2++++.

How about adding into renewables on the road the piezo electric generators to generate electricity as you travel the road.

else we will smoke cigars at your cost and at the world cost of ++++CO2++++.

yes your right.. by the way my alternative SPssATV has also another advantage to aid changeover.

you get your buik's oldsmobiles, Rollses and CAddilacs and take out the whole drive train, gear box axles and wheels set up the new SPssATV wheels on semi alternative suspension Drop in a pint size motor with a loud hailer for boy racer sound effects and driver the whole "I wishI was a electric boy racer" senario through a generator save two thirds on your fuel cost and beat everyone off the mark at the local illegal drags down the main street, It should (persay) make millions and they''d be wondereing whats under the scewwed tight bonnet (probably for those cars mentioned it's a four stroke motor bike engine or such the like feeding a couple of small deep cell batteries. then on to a DC drive all within each of the wheel housings ( not quite 0 to 60 in 3 secs ut what can you expect from an Oldsmobile - the body weight being i's main disadvantage. with New Solar cars the weight factor reduces to one third of any conventional foeeil fuel guzzling car and that makes it go faster.

it's the weight reduction that counts apparently becaust the two electric cars now produces

1. the X1 by Ian Wright @ www.wrightspeed.com

1. tesla motors newest addition (forgotten name)

both do 0 to 60 in faster speeds than ferrari and proche ( even hurbie)

the X1 is one second faster because of body and battery weight reductions and that the only difference. In saying that (speed veration one sec over quarter mile) the X1 also has a reduced rainge 120km before recharge and the Tesla 250 so they are evaluation the variation posibilities.

Of course more range in these cases = more batteries and thus more expence.

with a solar road running the newly developed nanotubed condensr batteries along with solar collectivity and national grid connection powering DCcurrent would make the complete system viable because DC it more efficent over small distances.

The solar cars collect a mojor part of the outter power from collection usints and by traveling th distance at already 600km + the power can travel as DC by car too.

A DC power redistribution alternative. but that's what CR4 is all about we type in the solutions and they reap the profits you do have got to ask yourself why are these people soOooo generous with there space (sorry CR4 it's probably not what your up to but it does seem to be questionalable espesially with new inventoins like mine)

any how returning to these alternatives. It is possible and that the bottom line.

it is ecconomical sense and thats why I write about it

it's a consious vote need to be made by the people whom still pay three times as much for thier cars running cost on Fuel per kilometer.

and it's good for the TREES, the OIL (coolent of the earth left in the ground) less steel production ( also less furnaces because of this fact), the consumer get to keep the profit, the manufacture ends up with a cleaner working and development enviorment, and the scientest and space explorer has more toys to play with (as do all the consumers) the packaging industry gets set on it's head with recyclicable pacakging that drives it's self back to the redistribution housing and cleans it's self and waits for the next product (just drop the empty product and it scurries off by it's self) most items now produced "to advance the statis quo" (and cigar sales) are made obsolete due to less demand for heavy industry and more people stop smoking because the city's AIR IS CLEAN and SMELLS NICE and does not need cigars to cope with everyday smog issues - (Sickening Mornning Orange Glow) - the list goes on and on anon and on and on and on and on and
On, all because of a solution to the construction developed to make the SPssATV wheel. from super trucks (100 tonners) to miniturization just at the top end of the nano scale.

Well at least thats why I have done research and developmet to this end it's an alternnnnnnnative to the emmissions control and reduction for all vehicles and all transportation solution and has taken me 18 years to come up with. and those unbelievers please read the tag line toO...

I don't know about the rest of you, but I use Solar Power every day of my life. In fact, almost ALL of the energy I consume is Solar. I turn on my electricity, it is derived from solar sources. I drive my car, it is powered by pure solar energy. I even exercise and I am powered by pure Solar energy! My energy comes from 3 sources, Hydroelectric generation, Fossil Fuel generation and bio-chemical conversion.

Hydroelectric generation takes place ONLY because the solar energy falling on the earth TODAY is vaporizing water from the oceans (the lowest possible surface point), which condenses at a higher surface points and runs back to the lowest by virtue of gravity. On its way down, we extract the solar energy used to lift it up. Every Day!

Fossil fuels are also pure solar energy, collected and concentrated by a form of bio-solar cells (plant leaves) from the infinitesimally small amounts that fell upon the earth every day for MILLIONS of years before someone tapped into it and pumped in into my Power Company's turbine or my vehicles fuel tank.

Food, whether vegetable or animal, is ALL derived directly from Solar energy. When I eat it, my body chemically reduces that energy into a useful form, mainly glucose, so that I can continue to live.

My point is, we already have a wealth of Solar Energy available to us right now. Using our injenuity and resouces to try to make a PV cell that can stand up to being driven on by a massive truck is a collosal waste. The cost-benefit ratio will ALWAYS be too high, no matter how cheaply we can make the cells. That energy cannot be transported and used where it doesn't exist.

We need to focus on the fact that eventaully, the reserve of Solar Energy stored as fossil fuels is going to run out. It may still take several generations to happen (much to the contrary of conventional wisdom), but it will eventually be a problem for our progeny. The best thing we can do for them is to stop being so selfish with the cheap forms of energy we have now. Spend our efforts on expanding hydro-power without sacrificing the environment and other species, extracting all the energy we can from wind and tides and increasing utilization efficiency to the greatest extent possible. Then when we have exhausted all of the lowest cost solutions, develop better methods of energy storage so that we CAN take advantage of every opportunity to extract Solar Energy in whatever form it comes to us as.

We need to work smarter, not wander off into never-never land.

JREF is correct. Let us do the math. Grid power is presently more costly than off grid power - no matter which grid. Let us utilize existing and common off-the-shelf products and calculate the ROI. I will give one specific example. Please feel free to add to the list.

100 watts continuous Off grid electrical power for a corn stove generated with a $167 1000 watt generator running 10% of the time at $3/gallon for gasoline will cost less than $10 per month off grid. The corn fuel to heat the largest house in Tennessee with a Tennesseecornstove will cost $300 max per season. Total cost for 6 months winter is less than $600. Grid power per month for heat alone would be $300 per month for some homes in Tennessee. The above numbers are the actual consistent cost for several large log and conventional homes in Tennessee heated with Tennesseecornstoves. Do your favorite search engine search and verify the figures from actual comsumers across the US.

If only there were solar, wind, stirling, or hydro to generate 100watts continuous locally. Anybody have any actual sources for either of these please respond with cost and source. We need that technology immediately. A solar cell that will generate 100 watts continuous from the heat, light, or flame of the corn stove is needed immediately. Somebody has one. Who?

We really hate generating with a gasoline

I agree that Solar power is the best way. Use transparent roof wherever possible to light up the house in day time. Use batteries to store power and also use water to store heat of solar radiation. Use grees, green grass to convert solar energy into good environment and food items. If properly planned then solar energy is good enough for lots of use.

Use wind power if you have good wind in the zone.

Use water flow power if you are on hil and there is water flow near by.

Do not burm bio-material, Put it to composting and use gas to power heaters. Use composet as manure to your Garden. Use bio fertilizer. Wood ferniture, wodden benches in the Garden and lots of green cover around the house.

You live in heaven.

I'm really not here to make other people money with my innovation but to make a point there are many ways to create electricity thats not used todate

That said here's a perfectly standard idea that can be used on every floating wharf around the world, of course this design is perfectly rotatable and can operate from the waters hydrolics from the wharf it's self or it can be used from a tether on the sea floor which I would also recomend. Designed by............KleijByKleij and shows to our community with the hope of royalties heading back to me.

you can pay me a pre-arranged royalities to the info place on my web site accompaning the design: with reference to the wharf or application that you propose to use it at to my e mail robbiekleij@treezone.co.nz and please read all of the conditions which at present needs spel chacking and updating for legality's.

or visit http://www.treezone.co.nz to talk to me personally about the same.

the basic artistic model can be viewed at

http://www.treezone.co.nz/hydrolic_charger.html

further explanation will be made avalible on correspondence to my email

mailto:robbiekleij@treezone.co.nz

Because oil is cheaper right now so Solar is expensive which would you pay for; economy.