difference between photovoltaic and solar energy?

what is the difference between them both? Or are they the same? and what is solar thermal energy? its all really confusing! can someone explain what they are?

Thanks in advance!

Photovoltaic is one form of solar energy utilization. But not the sole manner of producing energy.

Passive solar energy uses simply the heat energy from sunlight to heat a space, heat water, etc. with no external power inputs. It is broadly used terminology but has one point in common- the primary energy input is from sunlight. Whether it is used to heat water, to heat air to heat a house, or to create electricity, the common factor all is just the power of sunlight.

To look at a good long list of projects, and general and specific information, check out http://www.builditsolar.com

Posted in solar thermal energy | 3 Comments

Where can I find funds for solar energy & electric vehicles start up business?

Executive Summary
Soletev is a new business providing high-quality, full service distribution of solar systems, electric vehicles, electric charge stations and energy storage, specialty solar energy and electric vehicles-related supplies to off grid solar systems to home & business users & electric vehicles with electric charge stations throughout Southern California & SE Asia markets.
The principal owners are Tung Vo and Hanh Nguyen, whose combined experience brings office management, high levels of customer service, and over 20 years in marketing and sales management. At this time we are seeking additional equity capital to compliment our own investment and are seeking to arrange a bank line for working capital and receivables financing. We have firm commitments to distribute several high-quality new age off grid solar systems, energy storage, electric vehicles & charge EV stations, and have verbal commitments from independent distributors & wholesalers throughout the Southern California & SE Asia to carry our products. We currently have three solar system modules; M-24-00, M-24-01 & M-24-02 and two electric scooters in our branch office in Tan Phu, Vietnam for the demonstration of their functionalities. We plan to distribute our first products within 90-180 days of finalizing financials arrangements.
Sales projections for Soletev are estimated to begin at approximately $3,904,360 the first year, increasing to approximately $7,808,720 in Year 2 and approximately $11,713,080 in Year 3. Our net profit is projected at approximately $780,872 the first year, increasing to $2,342,616 by the end of the third year of operation. This based on a 20% net profit margin.
Distinguishing characteristics of our business will be the combination of management experience, sales and distribution networking relation in SE Asia, high-quality, innovative products and exceptional customer service. In particular, what really sets up apart is that we are the ONLY exclusive distribution company for MCV of San Diego, BYD of Southern California, SI of Shanghai, China & ZEV Corporation of West Virginia for Southern California & SE Asia distributing solar systems, solar energy storage, electric vehicles and electric charge stations. In addition, Soletev is going to partner with Minh Anh Corporation & Thuy Tien Group to manufacture our own high end but very affordable all electric scooters for Vietnam market using US high quality specs.

1.1 Objectives
•To open and operate a successful distribution company for solar technologies including solar systems, solar energy storage, electric vehicles charge stations and all electric vehicles in the Southern California and SE Asia market
•To employing eight to fifteen employees the first year.
•To obtain at least 1 main distributor and/or 1 wholesaler for one of the 6 countries; USA, Vietnam, Laos, Thailand, Cambodia & Philippines the first year of operation.
•Sell a minimum of 300 solar systems,120 e-scooters, 2 energy storage & 4 EV stations.
•Achieve first year sales of $3,904,360 and maintain gross profit margin of 20%.
•To produce a net profit of at least $780,872 by the end of the first year of operation.
•To break even end of first year of operation & maintain 20% net profit margin thereafter.

Venture capitalists.
Banks.
US Small Business Administration. (US government) http://www.sba.gov/
You might try also the California Department of Commerce. They might have some contacts to individuals, ventrure capitalists who have wanted to cultivate business in the state, or potentially grants or tax exemptions as well. Start here: www.ca.gov Then go through the departments such as Secretary of State’s office for corporate registration, and the department of commerce.

It looks like you have the essentials to provide a sound business plan presentable to any of the first three entities mentioned, and the fourth might seek more information, or they may be adequately informed from your summary to direct you accordingly.

Posted in solar energy systems | 5 Comments

I have to write a cost in a project related to wind energy and solar energy.?

I want to know its cost for home purpose. Cost of a small one.

Ask your parents if there is someone nearby who has one. I have no idea of your local costs, unfortunately.

A cardboard box solar oven with aluminum foil could be made for practically nothing here in the US. A solar water heater would be perhaps $3000 at the low end. The smallest solar electric that would actually save money would be on the order of $10000. None of this includes tax breaks and incentives, which will be different in your country.

Posted in wind solar energy | 1 Comment

how can we store electrical energy generated by solar photovoltaic system?


there isn’t a good way at home.
on a very large scale, there was a double reservoir that generated electricity as water flowed from the upper to the lower sections, and when there was excess capacity, it pumped water from the lower back up to the upper.

at home, batteries are pretty much your only choice, and for that purpose, they’re really expensive.

Posted in photovoltaic solar energy | 3 Comments

How much to start a wind-solar energy farm?

I am a farmer who is looking to retire. I would like to invest in an operation to feed the energy grid. A turnkey operation with available parts and sales reps? Or did I just invent a new industry? I want to retire to the desert southwest, USA.

Solar is easy, lots of vendors
Wind may be more expensive and you may have more "environmental" restrictions.

Best is to call the Local Power Company (where you plan to retire) and ask them.

Posted in wind solar energy | 2 Comments

Cost and energy generated by solar panel?

I want to install a solar panel on my car. I want to know that how much energy can be generated by a panel of size 4 foot by 6 foot. and the cost of installation.

A little more than 10 watts per square foot, so that size panel would generate 250 watts under ideal conditions, which is noon on a sunny but not too hot day, near the equator. That’s about 1/3 horsepower, or the same power as a man working hard.

That is larger than needed to keep the battery of the car charged, unless you plan to run a laptop or something off it at night. The power is also too small to power the car for driving. If it’s an electric car, you could get maybe another 2 miles per day out of the car, again, under ideal conditions.

An RV store might have an idea of how much installation would cost. They would be accustomed to solar panels for RV’s, but probably not small cars. A panel of that size would cost perhaps $500-800 just for the panel.

Posted in solar energy panel | 2 Comments

How does Temperature affect the function of a charge controller in a Solar energy system?

I’m looking specifically at the charge controller within a solar system as part of an assignment, i’ve covered everything but the charge controller now and I’m struggling to find out how it acts under temperature alone

Hey Harry, Billruss is correct. Most batteries are engineered to work optimally at some certain temperature. Car batteries are set up for 77 degrees F. As the temperature of the cells is reduced, the internal resistance to the flow of electricity and movement of the sulfate from the lead plates back into the liquid sulfuric acid bath occurs at a higher voltage. In most cases, this is not a huge problem. A car charges its battery the entire time it is running, so even if the charge rate drops, there is plenty of time to finish the job. This anomally became more important with the advent of solar electric panels, because all the charging had to be done during peak sun hours, so wasting some of the time of day waiting for a reaction to occur was not desireable. Many charge controller manufacturers today offer optional remote temperature sensors with their products that tell the controller what temperature the battery is at, and the controller can then tailor the charge voltage accordingly.

In many solar/battery installations, an effort is made to locate the batteries in a place that stays near the same temperature most of the day and night. Our home for example has them in the crawl space, where even from summer to winter the temperature only changes 30 or 40 degrees at most, so the added expense complication of temperature compensation is not really worth it.

I’ve clipped a weblink to Ample Powers website explaining thier product, they happen to be the ones that invented the idea. You can also learn about battery charging in Richard Perez’s book, which might be in your local library. Good luck Harry, and take care, Rudydoo

Posted in solar energy systems | 3 Comments

hey can you plz review this essay of mine ( plz help me with RUNON SENTENCES AND GRAMMAR?

this essay is due tomorrow so please review and correct it for me / you are my only hope nd

Making a Difference
Anyone who has seen the movie Avatar by James Cameron would remember the fight of the Na’vi indigenous people of Pandora to save their environment from the destructive "Sky People." Another aspect that stands out in this movie is the immensely important leadership role of Jake Sully in rallying and organizing the Na’vi to the eventual successful routing of their enemies. Leaders are extremely important in a world where human brains comprehend through categorization. John C. Maxwell notes in his book, Developing the Leader Within You, that leadership traits can be learned. Leadership is rooted in how much one influences others. Teachers influence their students, parents influence children, and students influence other students. Thus teachers, parents and students are leaders in a microcosm of society. All citizens are exposed to the education system. The degree of exposure depends on the level of education to which they aspire. An excellent way to prepare future leaders for the task of protecting the planet is therefore through the education system. My school is a high school, Fleetwood Park Secondary. That school can be improved to prepare future leaders to protect the environment through a simultaneous and integrated approach. The approach depends on changing the infrastructure, decreasing energy and waste requirements, incorporating green principles into the Fleetwood Park Secondary syllabi, and promoting mentorship programs. Changing the infrastructure of the school involves replacing most of the petroleum-fuel-dependent electronics to becoming solar-dependent. The school is situated in the country of Trinidad and Tobago, which is approximately ten degrees north of the equator. Its vibrant tropical climate ensures that solar energy is a dependable and renewable source of energy.
The approach is to all students to be mini-leaders in any environment. Fleetwood Park Secondary can accomplish this by exposing all its students to a manner of living that ingrains the habits and concepts of protecting the environment deep within the student psyche.
Apart from installing solar panels for energy, Fleetwood Park can also decrease its energy needs by opting to use one day in the week for on-line lectures, tutorials or study sessions, where students and teachers are not required to be at the campus. On that day, the campus utilizes only the most essential energy and the students do not utilize any transportation fuel.
The school can request that the government subsidize a drive to grant all new students a netbook or laptop upon registration. All assignments should be mandated to be emailed, not printed; recommended textbooks should be obtained electronically to decrease photocopying; lecture notes should be typed and sent to students, and students should have a program installed in their laptops that allows them to complete handwritten notes during classes electronically rather than in a paper notebook. This decreases the waste generated by paper, by pens, and by printer ink. Fleetwood Park Secondary and the government can specify that all laptop/notebook material should be recyclable, and ensure that all students sign an agreement regarding disposal of these technical devices.
Sustainability and good environmental practices should be listed as mandatory courses for all new students. Fleetwood Park Secondary can also direct that certain subjects, such as chemistry and engineering, should teach green chemistry and green engineering principles and integrate these into laboratory assignments. Creative ways should be formulated to include protection of the environment into other subjects where the link is not immediately apparent. An example would be requesting Spanish students to complete an essay on that topic, or examining the historical events, such as any major oil spill that have promoted the current awareness of our need to remain in harmony with our environment. The school should also encourage active mentorship programs with current leaders in society. For those leaders who are extremely busy, Fleetwood Park Secondary can organize short seminars where the students can interact with them afterwards to supplement an ongoing mentorship program. All the techniques listed above should hopefully expose the average student to good environmental practices that they can implement and impart to others when they leave the university environment. However, Fleetwood Park Secondary would also like to prepare the leaders who have a larger sphere of influence. This is the second approach, which relies on the first for a foundation.

…. that’s a lot of words to read.

Posted in solar energy society | 2 Comments

difference between solar thermal and photovoltaic energy?


You are referring to types of ways to collect the sun’s energy. All the sun’s energy is comes to the Earth as electromagnetic radiation. (no it is not radioactive) PV cells capture mostly visible light and transform it directly into electricity. Commercial efficiency is relatively low at around 10 to 15% but because the technology is scalable, can be used on house roofs, shades the roof and double uses the land area it is very popular.1

Solar thermal collectors and concentrators allow the sun’s energy to heat a target and then the heat is collected.2 Often the biggest loss of energy is when it is transformed to heat and must be dissipated. Solar thermal panels and concentrating technology transforms the sun’s light to heat. Because you are now collecting what was formerly simply waste the efficiency is much higher and solar thermal panels can be from 60 to 80% efficient. If we use this heat directly to heat hot water, buildings or convert this heat directly into air conditioning the overall efficiency remains high and ROI or payback periods continue to be high. If we convert the heat to electricity the efficiency will fall but generally continue to be higher than PV panels.

Posted in solar thermal energy | 3 Comments

does energy= god???????????

hi folks how ya doing? im here to ask a really deep question:
MOstly what i notice in the universe is a couple of things:

1 there is a center or head to everything

2 the universe is made COMPLETELY of energy

3 the bible has many meaning to our connection to god.

4 everything pretty much works the same way

Okay! so God has to be referred to being everything and everything in the universe making god the universe. if the universe is made of energy, and energy can neither be created nor destroyed does this not prove the existing of a some everlasting higher power? Also with the additional fact that god said we were made in his image (we were made in the likeness of the universe). Do we not act like our star? the smallest thing in the world acts like the our solar system (a atom) a center with moving particles rotating it. Even we act like that. In our society we have a center or head to our city (govenor). Even in our own bodies we act this way having a brain that controls everything else of our vital organs.

Heaven? Heaven by definition as often been referend to as a "Infanant connection with God"
and god being the universe does this not mean a infinant connection with the uuniverse? Mosty all religions argue with no knowlenge of the true meaning of all religions getting to that heaven. Muslims argue their way is the infinant connection with the universe and christians argue that their way is the
way to the universe. but which is is?

Durring the time jesus walked the earth. He claimed to have a infinant connection with god, he said he was going to bring heaven on earth and if we follow his teaching we would reach that heaven on earth! Was he trying to say that being god’s(universe’s) chidlren can make you be at peace with yourself, and preform my miricals (heaven on earth)

correct me if im wrong but i think this is the point of all sprituality and Why christianity stuck out more.
@Atheists are awsume: Explain atoms please and what are they made up of?
COMMON misunderstanding:

atom= energy

ATOMS MAKE UP THE UNIVERSE
@Your definition of ‘god’ is everything tht exists. Clearly, everything that exists is ‘god’ by your definition. Just bear in mind that your ‘god’ and god (by its true meaning) are two completely different things, with no similarities whatsoever other than the same name.

@jim: do you not realize we are the remains of the star being formed? no not as a whole we are not big gasses of matter chunked in the universe. If you read my question you would see that we do go my a govornment system simular to the solar system? A head, a boss with people who aby by the rules and are (in a way) controled by the head? In the smallest unit of life (a cell) there is still a round center with revolving particles that serve different puposses for the living organism. In the smallest unit of matter a atom there is a center with revolving particals. In any system (especially man made) there is some head or controler that controls the rest.
@atheits are awsume: Idiot! i finally looked at your question properly! ATOMS ARE THE SMALLEST UNIT OF MATTER AND ATOMS ARE COMPLETELY MADE OF NEGATIVE AND POSITIVE CHARGED PARTICLES=ENERGY!!!! maybe you should learn something

Your definition of ‘god’ is everything that exists. Clearly, everything that exists is ‘god’ by your definition. Just bear in mind that your ‘god’ and god (by its true meaning) are two completely different things, with no similarities whatsoever other than the same name. You have indeed proven a ‘god’ exists, but that has no relevance in the slightest to whether or not a god does (and even less to whether or not the Christian God does).

No, we do not act like a star, and your idea of a head/center or something like that is extremely inconsistent. The only way to unify all your examples under one definition would be to define one as being a thing which has influence over some other things. Even if everything did work this way (it doesn’t), that wouldn’t imply a god’s existence at all.

I’m afraid I don’t see why Christianity stuck out to you, pretty much everything you said directly contradicted it.

"@jim: do you not realize we are the remains of the star being formed?"
Of course I know that (or what you’re trying to get at anyway). What does ‘remains of the star being formed’ mean, just out of interest? The star did a lot of things, what’s so special about its formation that you point out we’re the remains of that specifically? We’re the remains of the star, not the process of it forming. I suppose it doesn’t matter though since it’s completely irrelevant. How does being made of matter that was once part of a star mean we operate in the same way as them?

"If you read my question you would see that we do go my a govornment system simular to the solar system? A head, a boss with people who aby by the rules and are (in a way) controled by the head? In the smallest unit of life (a cell) there is still a round center with revolving particles that serve different puposses for the living organism. In the smallest unit of matter a atom there is a center with revolving particals. In any system (especially man made) there is some head or controler that controls the rest."
And if you read my answer you’d see I’d already responded to that. There isn’t always some dominant power at play with absolute influence over the whole system (in fact, there never is – one factor might play more of a role than others, but to say it’s absolutely in charge is simply wrong), and even if there is that doesn’t imply in the slightest that a god exists.

I can only suggest that if you try to rely on science in order to prove your points then you do these two things: Firstly, check that what you write is accurate. I’m afraid to say that almost every time you’ve referenced science you’ve been incorrect. Secondly, check your conclusion actually follows from it. Nothing you’ve said, even if we were to assume it’s correct, would show or even imply that a god exists, and certainly not a specific one from a specific religion.
An argument can be shown to be flawed by either showing that the conclusion doesn’t follow from the premises, or that at least one of the premises is false. Unfortunately, your arguments can be criticized on both these grounds.

You can not call people idiots or tell them to learn something (when clearly they’re the ones who have) for pointing out that your statements regarding science are wrong. There’s simply no way around the fact that they’re mostly nonsense.

Posted in solar energy society | 17 Comments