13 Fundamental Advantages and Disadvantages of Solar Energy


Solar energy is becoming increasingly popular as the world takes notice of the burgeoning carbon emission problems that come with burning fossil fuels. But why all the fuss?

Nay-sayers have become less and less vocal as solar’s popularity has grown increasingly unhindered. Below I will discuss the advantages and disadvantages of solar energy today.

>> Read about the world’s top solar energy companies

Advantages of Solar Energy

No green house gases

advantages and disadvantages of solar - no GHGs

Advantages and disadvantages of solar energy: The major benefit of solar is avoiding green house gases that fossil fuels produce.

The first and foremost advantage of solar energy is that, beyond panel production, it does not emit any green house gases.

Solar energy is produced by conducting the sun’s radiation – a process void of any smoke, gas, or other chemical by-product.

This is the main driving force behind all green energy technology, as nations attempt to meet climate change obligations in curbing emissions.

Italy’s Montalto di Castro solar park is a good example of solar’s contribution to curbing emissions. It avoids 20,000 tonnes per year of carbon emissions compared to fossil fuel energy production.

Ongoing Free Energy

Another advantage of using solar energy is that beyond initial installation and maintenance, solar energy is free.

Solar doesn’t require expensive and ongoing raw materials like oil or coal, and requires significantly lower operational labor than conventional power production. Raw materials don’t have to be constantly extracted, refined, and transported to the power plant.

Life expectancy ranges between manufacturers, but many panels produced today carry a 25-30 year warranty – with a life expectancy of up to 40 years.

Decentralization of power

Solar energy offers decentralization in most (sunny) locations, meaning self-reliant societies.

Oil, coal, and gas used to produce conventional electricity is often transported cross-country or internationally. This transportation has a myriad of additional costs, including monetary costs, pollution costs of transport, and roading wear and tear costs, all of which is avoided with solar.

Of course, decentralization has its limits as some locations get more sunlight than others.

Going off the grid with solar

advantages of solar off grid

Solar Barn: Going off grid is a huge advantage of solar power for people in isolated locations.

Solar energy can be produced on or off the grid.

On grid means a house remains connected to the state electricity grid. Off grid has no connection to the electricity grid, so the house, business or whatever being powered is relying solely on solar or solar-hybrid.

The ability to produce electricity off the grid is a major advantage of solar energy for people who live in isolated and rural areas. Power prices and the cost of installing power lines are often exorbitantly high in these places and many have frequent power-cuts.

Many city-dwellers are also choosing to go off the grid with their alternate energy as part of a self-reliant lifestyle.

Solar jobs

A particularly relevant and advantageous feature of solar energy production is that it creates jobs.

The EIAA states that Europe’s solar industry has created 100,000 jobs so far.

Solar jobs come in many forms, from manufacturing, installing, monitoring and maintaining solar panels, to research and design, development, cultural integration, and policy jobs.

The book Natural Capitalism offers a good perspective on the employment potential of green design and a prudent approach to using resources.

The book proposes that while green technology and associated employment can be expensive, much greater money can be saved when combined with proven “whole-system” efficiency strategies (e.g passive lighting and airflow).

With solar energy currently contributing only an estimated 4% of the world’s electricity, and an economic-model where raw materials don’t have to be indefinitely purchased and transported, it’s reasonable so assume solar jobs are sustainable if the solar industry can survive the recession.

Solar’s avoidance of politics and price volatility

One of the biggest advantages of solar energy is the ability to avoid the politics and price volatility that is increasingly characterizing fossil fuel markets.

The sun is an unlimited commodity that can be sourced from many locations, meaning solar is less vulnerable to the price manipulations and politics that have more than doubled the price of many fossil fuels in the past decade.

While the price of fossil fuels have increased, the per watt price of solar energy production has more than halved in the past decade – and is set to become even cheaper in the near future as better technology and economies of scale take effect.

Furthermore, the ever-abundant nature of the sun’s energy would hint at a democratic and competitive energy market – where wars aren’t fought over oil fields and high-demand raw materials aren’t controlled by monopolies.

Of course, a new form of politics has emerged with regard to government incentives and the adoption of solar, however these politics are arguably minor compared to the fossil fuel status quo.

Saving eco-systems and livelihoods

Because solar doesn’t rely on constantly mining raw materials, it doesn’t result in the destruction of forests and eco-systems that occurs with many fossil fuel operations.

Destruction can come in many forms, from destruction through accepted extraction methods, to more irresponsible practices in vulnerable areas, to accidents.

Major examples include Canada’s tar sands mining which involves the systematic destruction of the Boreal Forest (which accounts for 25% of the world’s intact forest land), and creates large toxic by-product ponds [1].

The Niger Delta is an example where excessive and irresponsible oil extraction practices have poisoned fishing deltas previously used by villagers as the main source of food and employment, creating extremely desperate poverty and essentially decimating villages [2].

A more widely known, but arguably lower human-cost incident is the 2010 BP oil spill in the Gulf of Mexico. It killed 11 people and spilled 780 thousand cubic meters of crude oil into the sea.

An interesting glance at the situation caused by destructive fossil fuel company practices in the Niger Delta. Sweet Crude is a good documentary if you want to learn more.

The best is yet to come

Solar technology is currently improving in leaps and bounds. Across the world, and particularly in Europe, savvy clean technology researchers are making enormous developments in solar technology.

What was expensive, bulky, and inefficient yesterday, is becoming cheaper, more accessible, and vastly more efficient each week.

Disadvantages of Solar Energy

Solar doesn’t work at night

The biggest disadvantage of solar energy is that it’s not constant. To produce solar electricity there must be sunlight. So energy must be stored or sourced elsewhere at night.

Beyond daily fluctuations, solar production decreases over winter months when there are less sunlight hours and sun radiation is less intense.

Solar Inefficiency

A very common criticism is that solar energy production is relatively inefficient.

Currently, widespread solar panel efficiency – how much of the sun’s energy a solar panel can convert into electrical energy – is at around 22%. This means that a fairly vast amount of surface area is required to produce adequate electricity.

However, efficiency has developed dramatically over the last five years, and solar panel efficiency should continue to rise steadily over the next five years.

For the moment though, low efficiency is a relevant disadvantage of solar.

Solar inefficiency is an interesting argument, as efficiency is relative. One could ask “inefficient compared to what?” And “What determines efficiency?” Solar panels currently only have a radiation efficiency of up to 22%, however they don’t create the carbon by-product that coal produces and doesn’t require constant extraction, refinement, and transportation – all of which surely carry weight on efficiency scales.

Storing Solar

Solar electricity storage technology has not reached its potential yet.

While there are many solar drip feed batteries available, these are currently costly and bulky, and more appropriate to small scale home solar panels than large solar farms.

Solar panels are bulky

Solar panels are bulky. This is particularly true of the higher-efficiency, traditional silicon crystalline wafer solar modules. These are the large solar panels that are covered in glass.

New technology thin-film solar modules are much less bulky, and have recently been developed as applications such as solar roof tiles and “amorphous” flexible solar modules. The downfall is that thin-film is currently less efficient than crystalline wafer solar.

One of the biggest disadvantages of solar energy – COST

The main hindrance to solar energy going widespread is the cost of installing solar panels. Capital costs for installing a home solar system or building a solar farm are high.

Particularly obstructive is the fact that installing solar panels has large upfront costs – after which the energy trickles in for free.

Imagine having to pay upfront today for your next 30 years worth of power.

That’s an incredibly disadvantageous feature of solar energy production, particularly during a time of recession.

Currently a mega watt hour of solar energy costs well over double a mega watt hour of conventional electricity (exact costs vary dramatically depending on location).

All is not lost though – nuclear is a good example (economically) of energy production that was initially incredibly expensive, but became more feasible when appropriate energy subsidies were put in place.

Solar Energy Gets People Talking

One feature of solar energy is that it spurs discussion and re-assessment of the importance and interaction between economics, environment, and investment.

There is debate and polarization of perspectives and interests.

While not everybody is in favor of solar, the fact that there is discussion about the validity of the status quo is a fascinating development. The monopolistic nature of many industries, the pitfalls of solely focusing on economics, and environmental disregard, are increasingly central topics.

At a practical level, many governments and state authorities are encouraging solar use through incentives such as subsidies, rebates and tariffs. California is an interesting example of such measures in action.

Spain highlights the importance of long-term consideration with such incentives, and how they can fail if not handled correctly or if circumstances change – such as the global financial crisis.

Factors such as cheaper materials and installation as demand grows will make solar more affordable in the future, but for the moment, the fact is that producing solar electricity is financially expensive compared to conventional methods.


  1. joshua kilakoi
    January 9, 2015, 3:02 am

    Am a tanzanian but now am in mexico…. these problem of energy management are exist in many countries in africa continent.

  2. joshua kilakoi
    January 9, 2015, 3:00 am

    for rilly,Am very interesting with the uses of solar energy in our life,,,it is one of the energy which is very secured for our planet (earth) compared to others energy like hydro,nucleur,petroleum,gas, and geothermal energy which some times cause problems for living organisms in the water and environment in general. these are very dangerous for living things as long asit causes contaminations in soil, water and air…but solar energy is only a matter of install panels and cause energy for use..the problem of many countries around the world are based in corruption,,and to instal solar energy is only at once so continuation of corruption doesnt go to exist for the goverment at that country…but for the others sources of energies like hydro,gas,petroleum,geothermal and others sources; there are corruption which can takes place daily for the goverment because of the way we needed to manage hydro plants,gas petroleum, geothermal,nucleur and others sources;………….. thus why many goverments in difference countries, doesnt like solar energy but is one of the energy which is very nice and healthy for the life of human beings and others living things more than others sources of energy……………,i like this topic because it helps me for my research………. estudiante en cimav mexico chihuahua

  3. meranda alexander
    December 9, 2014, 3:17 pm

    this helped a lot with my school report

  4. Harley
    November 5, 2014, 2:48 am

    this is AWESOME website I love it it hel;ps us so much at school. love u guys. number 1 fan

  5. Lakshit
    November 2, 2014, 4:16 am

    I want uses and it is giving me advantage and disadvantage of solar energy

  6. Veronica
    October 19, 2014, 2:32 pm

    I have been researching the pros and cons of solar panel for awhile and this is the most articulate, well-defined article. I decided last night a no to solar panels and then woke up thinking am I missing something. My gut with little info was telling me no to solar, but also I felt I did not have enough detail information and really did not know what next question to ask. The author of this was so thorough that answers were given to questions that were lurking in the back of my mind. Kudos to Greg! I now feel justified with a negative to solar panels for my situation. Thank yo Greg Whitburn.

  7. architect noel
    October 9, 2014, 4:55 pm

    this is very useful info indeed 1\ many thanks

    • chase
      December 5, 2014, 4:06 pm

      i know right

  8. steve weber
    October 3, 2014, 2:12 am


    There is no such thing as free or absence of green house gases.
    It takes time, effort, fuel, byproducts, some kind of energy to forge all the equipment related to produce any thing man made which over time leaves waist or recyclable.

    No one has ever made an account of every single penny of cost from beginning to end of these two power entities to prove any advantage of either!

    Case in point;
    People constantly waist Electricity using exercise machines when instead they could exercise on a machine that makes Electricity!

    August 2, 2014, 9:26 am


    • vin oth
      August 10, 2014, 3:16 pm

      let we try for bloom energy systems by alternative,

    • Barbara
      October 9, 2014, 3:58 pm

      I have found some problems not discussed regarding solar panels installed on the roof. I was told if your house happens to catch on fire and you have solar panels on your roof of your house, the fire department will not do anything to stop the fire with the solar panels on the roof.
      If this is true what else do we not know regarding solar panels that is not discussed with the homeowner.
      I would also like to be informed regarding all info not told to the homeowner regarding solar panels and include what is not warranted with it. Will it hold up in strong winds etc.

      • expgreen
        October 10, 2014, 9:45 am

        I highly doubt this.

  10. Emmanuel Makafu
    July 28, 2014, 5:00 pm

    This is good info. Thanks.

    July 20, 2014, 10:38 am

    I am so glad that I read this article. I have developed a model for an investor and used my financial knowledge to achieve this. I am presenting next week and the content of your article fits in with my sentiments. My approach was not to be influenced by different role players in SA on how they do it, but working on the New way to make Solar successful. Currently confidential but just 1 snippet ” Return on Investment comes last and Empowering people to pay the bill at full price comes first”

  12. anant
    June 8, 2014, 4:05 am

    saved my holiday homework!!!

  13. Suzanne
    June 7, 2014, 3:23 pm

    The contents are clear, relevant and well written. Very useful to anyone writing/studying solar energy or just interested in getting some information. Well done!

    • mattthew
      June 16, 2014, 4:47 am

      it helped alot

      • Ana
        September 12, 2014, 10:26 pm

        I believe that i came up with the solotiun to help all small nations and islands especially the Caribbean. technology has advance tremendously and they are new ideas and inventions that could eliminate pollution and hunger in many nation. Advancement in solar power, wind energy,m bio-agriculture, energy sufficient homes just to name a few can eliminate hunger, reduce energy dependence and improve way of life. however, for large nations these plans seem impossible. Today i realize that despite the short coming in large nations, small islands and countries with a small radius can benefit from these advances. Here is a plan that i write up for my native country Jamaica, feel free to challenge my belief or change or alter this idea if you feel its flawed. Jamaicapopulation 1 milliona system of bio-agricultural plants can increase food production reducing hungerDependent on OIL..-utilizing solar energy would dramatically reduce dependency on oil- solar energy cars can be implementedHomes are insufficient and old – modern homes could reduce energy consumption and reduce dependency on oilPrimary source of electric is from coal plants- several turbine wind mills and solar plants could create sufficient energypeople travel miles on gas bustling cars to reach next town- a series of modern trains..solar could be used(this idea is in next 10 years, technology hasn’t been invented yet)By doing this Jamaica can maintain its beauty and preserve the environment..also in addiction plastics, woods and other environmental troubling devices could be reduce with the current advancement on green products.its just an idea..but what do you think, i want to get my masters in engineer and return home to start development..are these idea absurd or can they be implemented world wide/?

  14. jj
    May 29, 2014, 6:45 pm


  15. Victor Perez
    May 29, 2014, 6:39 pm

    Thank you author^.^

  16. true dat
    May 21, 2014, 12:55 am

    thx man this helped with a last min essay great info!

  17. Anuka rai
    May 11, 2014, 3:09 am

    Thank you for it was really helpful…….

  18. lexi
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    May 5, 2014, 5:19 am

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  20. bob
    May 1, 2014, 5:04 pm

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  21. paramita
    April 26, 2014, 3:28 pm

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  22. Ken Glass
    April 22, 2014, 12:56 am

    There is never any reference to the fact that without effective storage capability, the community power plant has to produce power as before in case a cloud blocks the sun. Individual production of greenhouse gases is down, but no community reduction as a result of solar

  23. u-ser
    April 18, 2014, 2:47 pm

    Helped a lot on pwrpoint.thnks

  24. Bob
    April 18, 2014, 4:03 am

    In the 70′spossibly earlier solar panel plant was constructed. Why it never took off and is still in operation is unknown to me. It was dismantled and completely removed why?hum maybe it was due to maintenance and or never produced electricity that was cost effective. Well any way here we go again and they are now in the process all over agian since 2013 here we go agian. All I think is it is just anonther PR propaganda move to make the El Paso Electric company look as they are catering to the governments idea that Green energy is the way to go. Come on man wake up America and electric companies this is just another way for the government to push green energy as the future source of energy. Yea right! Get withit the amount of land space and number of solar panels would be so expensive that it would take 20 + years to recover cost and by that time the maintenance cost were included it would be just plain a waste of money and land… We need to as Americans sy let’s use some other proven source of fuel that would be more cost effective and most of all have a way to produce electrical power that works day and day regaurdless of weather conditions.

    • bbweckerley
      August 7, 2014, 1:33 am

      In California there is a lot of pressure to go solar. Government incentives, free installation, etc. supposedly are the “carrot” to get customers to buy into it, but with the big utility companies all having their hands in customers’ back pockets, there is little incentive for them to lower their rates. In fact, rates continue to climb.

      The deal is that your panels produce x amount of power, which is sent back to the source solar company. They sell you back 75% of what you would normally use, but at a lower tier price. Then the utility company makes up the difference by billing you for the balance at a lower tier price. Until the utility companies lose their geographic monopolies there is little competition and they can charge more to compensate for the lost profits from the solar homes. Confusing, but it’s all about people lining their pockets in the name of “helping you go green”.

    • Mike
      February 10, 2015, 5:05 am

      Wow Bob,
      Did you really email this with all its typos and grammatical errors? I’m still trying to decipher what you meant? If an alternate source of power is to be used, what is YOUR suggestion?

  25. Joe Phil
    April 17, 2014, 7:44 pm

    thanks! this helped me a LOT on my solar energy essay, thanks!

  26. Ethan Krutzkamp
    April 14, 2014, 2:40 pm

    THANK you this helped me on my solar project at school

  27. jayden
    March 16, 2014, 4:16 pm

    thanks… great details and information… this helped me on my project, im doing solar energy

  28. BOB
    March 4, 2014, 5:44 pm

    this was helpful

  29. Martin
    February 17, 2014, 11:37 am

    Thx a lot it helped me in my school class work my teacher was proud of me :)

  30. brett
    February 13, 2014, 10:06 pm

    most amasing site ever my fav. site NO oter site is as beter as this its also a great site for middle school kids like me

    • Mike
      February 10, 2015, 5:07 am

      It’s great that your interest lies in alternative energy, Brett. But don’t forget those English classes, buddy.

  31. anu
    January 3, 2014, 4:47 pm

    thanx a lot it helped me 2 cmplte my assignment

    • Mike
      February 10, 2015, 5:07 am

      Anu. How about completing your words?

  32. Eng.Amr
    December 23, 2013, 8:13 pm

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  33. ayman
    December 14, 2013, 7:04 pm

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  34. Stephen
    December 12, 2013, 1:04 am

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  35. nikhil_ind
    December 10, 2013, 4:25 pm

    Thanks a lot…! May God bless the author

    • katieyouns
      January 15, 2014, 1:21 am

      God bless you!! have a great week!!!!!!!!111

  36. Ella
    November 7, 2013, 6:44 pm

    helped with homework ^.^ doing solar energy

    • Lantymo
      January 24, 2014, 7:14 pm

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    • Claudia
      February 13, 2014, 7:01 pm

      Me too!

  37. hawky
    October 8, 2013, 3:20 pm

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  38. Prem Vinayak
    September 24, 2013, 2:52 pm

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  39. Sushruth Ramesh
    September 24, 2013, 2:51 pm

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  40. reehan lambate
    September 18, 2013, 2:44 pm

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  41. LuLa
    August 9, 2013, 2:51 pm

    It’s obvious that solar energy has more advantages than disadvantages. If solar energy had the tax breaks that the oil industry has enjoyed for centuries, it could be as competitive and give people a viable choice. As it is, the only time it is looked at seriously by the public is when oil prices spike to unbelievable heights for unspecific reasons or speculation. The reason you don’t see our politicians speaking up is because they are in the pockets of the oil companies that receive higher and higher profits every quarter. I’m sure they all receive their fair share in super packs.

    • Mike
      February 10, 2015, 5:10 am

      ….And those very politicians can now afford their own home solar powered systems with all the kickbacks they receive from the oil companies. What comes around go around.
      Vive la politique et la corruption!

  42. nandan
    August 9, 2013, 7:45 am

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  43. ritika
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  44. pinky
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  45. Mansour
    June 28, 2013, 11:11 am

    Could you please send me the documentation of this website the auther and so on

  46. Joni
    June 23, 2013, 10:15 pm

    Thanx, This really helped me with my Science Project

    • shafaq
      July 4, 2013, 10:41 am

      it help for my sst project

  47. Constanza
    June 19, 2013, 2:25 am

    The information provided in this website is most useful and explanatory, it helped me a lot with a for and against essay, Thanks!!!

  48. Sappmukherjee
    June 18, 2013, 10:02 am

    You saved my project man great work an useful site …

    THANKS – exploringgreentechnology.com

  49. riya
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  50. Cookie
    June 12, 2013, 5:17 pm

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  51. Tyler
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  52. Aruna tomar
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  53. yaoifanboy
    May 9, 2013, 11:57 am

    perfect! this will save my life for my ESS essay!! thank you for the info! this is probably the least biased one i’ve seen!

  54. akram
    May 8, 2013, 2:08 pm

    good comparison of benefits and disadvantages of solar energy systems. good attempt, valuable information. Thanks.

  55. Syed Jamal Abid
    May 1, 2013, 8:53 pm

    Every creature on this planet is energy efficient except humans. This is a major factor behind energy crisis the world is currently facing, especially the developing countries.

  56. Syed Jamal Abid
    May 1, 2013, 8:45 pm

    I heard some one wrote about the fusion power. Will somebody please elaborate how fusion can be used on the power generation avoiding disasters like Fukushima, Japan.

    May 1, 2013, 12:58 am

    i love this information

    • Aabid
      September 12, 2014, 10:06 pm

      From what I understand, Bermuda has done a lot of work using new and old tdowras sustainability on a resource limited island. You might want to look into what they do and then scratch the surface.Have you ever visited care2.com? It has a lot of info, numerous links, and then links to links. Don’t forget to consider solar-thermal energy assistance and use; you pre-heat water or other materials stragetically placed and/or plumbed to reduce the solar power load. A lot of folks currently reducing thier grid use and/or going off the grid are returning to 12 volt systems or sub-systems. (It is my understanding that back in the day, obviously before my day, that 12 volt electricty arrived at homes long before the current 110/220.) Also, have you ever been to cityfarmer.org? It is out of Vancouver, BC and its goal is to promote city farming in the Vancouver area and world wide. Certainly at one time, it had a board for the posting of urban farming research, papers, and the more. It also had a posting of a guy who did a paper (thesis/thesis related I think) about establishing farming capabilities in poor, urban areas with limited water access and use. His area was some place in Africa. Posted were some dimensions and drawings of some raised beds using found scrap materials for the growing of lettuces and I think it was tomatoes. The beds included different levels and a slucing system that were arrived at. Included in the discussion were alternative material suggestions, critical technical aspects about the bed dimentions and slucing system, yield discussion, and future and alternative design considerations one could/should make. I’m not sure if this board or posting still exist but, the administrator can probably get you information from the archives. Certainly in the past, this was a good site for connecting to others doing urban and other food production exploration under different conditions.

  58. Kirito
    April 12, 2013, 4:48 pm

    Does anyone know the cost of solar panels per suair inch to intall? Need for a project.

  59. Sunny
    April 11, 2013, 5:25 am

    Conservation of power is an important factor. A Prius hybrid car gets 40-45 miles-per-gallon compared with an army tank which consumes 5 gallons of gas for every mile it travels, for example. I wonder if anyone has computed how much energy was consumed by the Iraq/Afghanistan Wars and at what monetary cost. Also, automatic WiFi-connected electric meters can enable real-time data collection to monitor and manage electricity use more efficiently to reduce the need for more power plants and perhaps lower the cost of conventional sources before a new plant is needed. The German government encourages homeowners to install rooftop solar systems by guaranteeing they will make a small profit if they do so; the Clifornia fails at this because its Public Utilities Commission allows Pacific Gas and Electric to pay homeowners 5 cents per kilowatt while it charges them 25 cents per kilowatt they use from the power grid.

    • Mike
      February 10, 2015, 5:17 am

      Yes but who uses a Sherman tank to go to Albertson’s, really?
      And if ‘we’ had not used the energy to combat enemy forces in Iraq, would we be driving Priuses to Albertson’s?
      Those WIFI meters guarantee that the jobs held by meter maids no longer exist!
      Vive le progrès…
      Those poor souls can’t afford Priuses.

  60. Mr.Kingsley Ampah
    March 23, 2013, 3:23 pm

    Dear Sir/Madam,
    I understand that you are a manufacturer/exporter of Solar Energy Power,Systems
    found on your website below:http://exploringgreentechnology.com/
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    Your urgent response will be highly appreciated.
    Mr.Kingsley Ampah

    • Ernest Owoseni
      April 10, 2014, 5:01 pm

      Attention: Mr Kingsley Ampah,

      I really appreciate your comments in respect of the solar project.
      Please, may i use this opportunity to introduce my self to you in the sector, I am a renewable Energy consultant, designer, Installer. I want to know if you can invite me over to you country to see how we could partner together in this sector, Solar project has come to stay all over the world the fact that most African countries are still shy way from the quality project due to the level of corruption in the our continent.
      Please, your response would be highly appreciated as I look forward to hearing from you as soon as possible.

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      For: Greenfruition Nig. Ltd

      (+234802 547 0904)

  61. samyj
    March 10, 2013, 9:17 pm

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      September 12, 2014, 10:37 pm

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  62. drag0nslayer587
    March 7, 2013, 8:32 pm

    this website is very useful

  63. rigved
    March 7, 2013, 11:47 am

    great information
    may i know what will be the AREA nd NUMBER OF PANELS required , so as to meet all the requirements of a middle-class family in southern part of INDIA where the temperature ranges 29-45 degrees C??????????????

  64. PAARAS
    March 6, 2013, 2:42 pm

    when did you upload this?

  65. Owen
    March 5, 2013, 12:09 pm

    This really helped with my science project , thank!

  66. jahkendra arthur
    February 27, 2013, 6:46 pm

    Fab I just learned alot

  67. nyannyanmeowmeow
    December 17, 2012, 3:28 pm

    your stupid its not infinite the sun is gonna dieeeeeeeee this friday

    • Domo
      March 7, 2013, 1:56 am

      no, my friend. You are the stupid one. The sun is expected not to “die” for the next atleast 1 million years…

    • drag0nslayer587
      March 7, 2013, 8:27 pm

      stop being an idiot

    • JoeMama
      March 8, 2013, 5:58 pm

      We all survived the Terrible Friday, so your stupid

    • Christian
      March 18, 2013, 5:58 pm

      umm the sun did not die because we are still here u retart

      • luckysgirl563
        February 10, 2015, 2:18 pm

        this really helped me ^.^

  68. Bhupin
    December 17, 2012, 2:29 am

    It helped me to learn a lot about solar energy…and helped in my school project


    • Author
      December 18, 2012, 2:22 am

      Thanks bhupin i m glad to hear it helped u to learn and in your project

      • king
        March 7, 2013, 8:22 pm

        i luv this site

      • king to real234
        March 7, 2013, 8:34 pm

        your a smart person for thinking of this web site mr author

  69. Kyle
    December 16, 2012, 2:05 am

    When was this published?

    • expgreen
      December 20, 2012, 8:56 am

      Hi Kyle, it was published on Jan 10 2012. Cheers.

  70. XD
    December 4, 2012, 10:19 pm

    thanks. it helped me for a school project

    • lol
      December 17, 2012, 12:45 pm

      lol it helped me with a schoold project too.

  71. bloom
    November 28, 2012, 10:53 pm

    this helped me for my writing essay . opinion essay.

  72. khangga115
    November 27, 2012, 10:30 pm

    It help for my homework 6th grade

  73. tejas
    November 20, 2012, 6:43 am

    thnx it helped me for my project……!!!

    • expgreen
      November 21, 2012, 3:43 am

      Great to hear. Thanks for the comment.

  74. K.girish chandra
    November 20, 2012, 12:30 am

    really good but i need more infomation

  75. K.girish chandra
    November 20, 2012, 12:26 am

    thanks..really usefull. i prepared for my aural test but i need more information.

  76. charlie
    November 19, 2012, 6:41 pm

    thanks sooo much i had tons of scince and this helped alot u tha best <3

  77. shibu
    November 18, 2012, 8:02 am

    what about solar jobs..?

  78. shuaibu haruna
    November 15, 2012, 8:12 pm

    does soler panel causes fire outbreak or speark?

  79. Alexa Guy
    November 14, 2012, 4:56 pm

    NEVER knew so much about Solar Energy!!!!!!!! When will I ever learn so much!!!!!???? I <3 the internet!!!!!!

  80. qm dj
    November 13, 2012, 5:56 pm

    this is a big help on the project at school THANKS :)

    • asdfghjkl123456789
      November 13, 2012, 11:01 pm

      ikr! had 2 do a project on solar energy, advantages n disadvantages! this helped me a bunch! plus got an A+ . LOL.

  81. Todd Hayden
    November 8, 2012, 7:09 pm

    Thank you for putting together this info. It was very informative! I wish I has come across this prior to buying my first system as I ended up with amorphous panels which are not the most efficient as you know, however now I know, thanks to your informative site. I’ll do better next time thanks to you. All the best, Todd

  82. jess
    November 6, 2012, 6:04 pm

    thanks, really helped me with my homework! :)

    • expgreen
      November 7, 2012, 3:05 am

      Thanks for your comment Jess. I’m glad it helped.

    • Yolande
      November 11, 2012, 8:28 pm

      Thankyou sooo much this helped me a tonn with a huge assignment

    • lizz
      November 12, 2012, 11:33 pm

      It helped with my homework in the advantages part but there wasn’t really lots of disadvantages ,….. but it still helped me THANKS allot it made my day soo much easier THANKS!!!!!!!!!!!!! (^_^)

  83. jim
    November 5, 2012, 4:52 pm

    I like solar panels:}

  84. stl
    November 3, 2012, 12:03 pm

    wonderful! av found it very true

    • expgreen
      November 7, 2012, 3:08 am


  85. viplove sharma
    November 3, 2012, 7:25 am

    solar energy z d bst source of energy……no pollution,wt else v need!!!!!!!!

    • soas
      November 26, 2012, 11:45 am

      The panels have to be made and shipped around the world. They are extremely inefficient. On Saturday I was making on 34w at midday from a 4kw system. What I export just puts the voltage up on the grid. W need fusion power soon. That will solve the worlds energy problems at a stroke.

  86. soas
    October 30, 2012, 10:44 am

    solar does not save carbon footprint. It is pseudo- green
    It is so unreliable in the UK. The power changes second by second, often wildly, and thus, is underwritten by carbon producing power stations, to keep the lights on and the voltage of the grid within tolerances.
    I have a 4KW s facing system. 1 year old this week and the 3.6MW it has produced has not saves any power station production. The tonne of panels have been transported across the planet though.

    Nuclear fusion wil be the real panacea. Reliable, safe, and available to all countries.

  87. rachel
    October 29, 2012, 11:43 pm

    green energy is a waste of money
    sick of all of this liberal crap
    time for Romney to take over and save our planet from destruction…BOOM

    • Jacie
      November 9, 2012, 12:23 am

      well ROMNEY didn’t win!

      Obama Obama Obama!

  88. Erik Bylund
    October 29, 2012, 6:24 pm

    This article was very helpful, best article ive found on solar energy, thank you

    • expgreen
      November 7, 2012, 3:15 am

      Thanks Erik.

  89. Sarah
    October 22, 2012, 4:49 pm

    very helpful thank you :)

    • expgreen
      October 25, 2012, 9:11 am

      Thanks Sarah. Glad you found it useful.

  90. Rajeshwari
    October 11, 2012, 12:10 pm

    solar energy is wonderful form of energy. it does not cause any pollution.It is very useful for conservation of non renewable energy.so everyone in this world must know the importance of energy conservation. SAVE ENERGY SERVE WORLD . JOIN HANDS WE CAN

      October 11, 2012, 12:14 pm


  91. weyrah
    October 9, 2012, 6:13 am

    This gave me good point to write in my research. Thanks to those who worked on it.

  92. janardhan
    September 26, 2012, 4:32 pm

    solar is available for free and it is infinite as well only thing we need to think about is how to reduce the cost factor in this once that is get solved this will become the best form of energy we need to educate everyone in this no energy in this earth came so easily man has worked hundreds of years to make the different types of energy to be useful to mankind similarly we need to work over the solar energy to bring this everlasting thing for the use of mankind

  93. akshaya
    September 23, 2012, 4:56 pm

    solar energy is the best

  94. akshaya
    September 23, 2012, 4:55 pm

    with all the above info , why the solar energy has not come into full swing is my point…..itz high time v people do sumtng rather than blaming the government………

  95. DonRoger
    September 21, 2012, 2:20 pm

    I Like Soloar Barns

  96. santhanam
    September 19, 2012, 4:46 am

    Every day we are upgrading our house hold electrical equipments .We must reduce it first

  97. Asifa hussain
    September 6, 2012, 7:20 am

    haiii sun is a good source of energy and by using that energy a s a sorce is also good

  98. pallavi
    August 31, 2012, 10:05 am

    really usefull………….

    • pallavi
      August 31, 2012, 11:08 am

      i am really satisfied..with the data given…its quiet useful n days environmental….condition is getting down..coz of lots of pollution…..solarenergy…is really a damn good way to protect ourselves frm the forthcoming threat…

  99. sowmiya
    July 21, 2012, 9:23 am

    can we use other light energy instead of sun light

    • ram
      March 12, 2014, 5:49 am

      we can also use the ordinary light bulbs instead of sunlight for incase of experiments or other requirements.
      solar panel just need a photons from the light it may be a sunlight or light.

  100. D. P. Merleau
    July 17, 2012, 4:32 pm

    Either way we look at it there is a global energy crisis afoot. Mary has a point that we need to wonder if nuclear is an option at all. Too bad Nuclear Power is really our only option if we are to save our planet from environmental destruction.

    It is important to note the the Fukashima incident could have been avoided. The operators and the gov’t regulators were aware of the potential threats of a large quake before March 11, 2011. However, they chose not to respond to these concerns. The problem is not the technology. It is the lack of personal responsibility among decision makers.

  101. hammad
    June 21, 2012, 7:26 am


    • ghuoe;rhouhrpfdfrhksgdhs
      October 15, 2012, 1:29 pm


  102. TAZ Anthony Ganderton
    April 29, 2012, 9:01 pm

    I only see the advantages of enhancing the harnessing of the Sun’s power. Plants had worked this out before we arrived on this Earth so why have we taken to long to achieve the obvious ? > It has become clear that the disadvantages of NOT using both Thermal Hot water and Storm/Grey water re-cycling systems augmented by PhotoVoltaic systems will mean that future generations of our “offspring” will eventually become a “Race” of “Gollums” as predicted by “Tolkien” ! > TAZman > Hawke’s Bay > New Zealand

    • Mary Ginn
      May 21, 2012, 12:27 pm

      Agreed Anthony the cost is too great…I love my family too much to leave it to chance.

      Incentives for people to act initially, will drive the prices down further on solar making it more affordable as if it had been permanently subsidised… For Governments it is a choice to assist in upgrading larger power options and after Fukashima, can we in all honesty call that an option at all?

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