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Energy waste in the buildings is really a problem that countries face. Some people don’t care if the power of TV’s, stereos or even lights is on for 24 hours. Moreover, most of the companies which are located in buildings across the world leave the lights on during all nights (Business). In addition, when nobody is occupying the building, besides keeping the lights on, they will leave the computer power on (Business), ignoring its electricity consumption, especially in our days.
Although there is wasted energy in buildings, there are some solutions which can solve the problem. First of all let people change their behavior and learn how and when you can use your electricity. The second solution that mostly can help the companies is the solar energy, which is one of the effective solutions. There are two kinds of solar energy. The first kind is called thermal energy (SEI). From this kind of energy we can heat the water in our house and food in a solar cooker by using the sun’s energy (SEI). The other solar energy is called photovoltaic (SEI). It converts the light energy to electric energy by using the photoelectric effect (Wikipedia). For example, it can turn the lights on/off by using the sun energy.
What is passive solar energy? It is designed to cool the house in summer, and heat it in winter. The passive solar energy relies on the building design, where it should invite the sun heat into building and save it for night time. It should also keep the house warm during the winter. In other words, there is a specific geometrical axis where experts and designers build to apply passive solar energy idea. (Chris)
In conclusion, we have to reduce the power consumption and try to use it only when we need to use. Solar power energy is really a good solution to save energy and our money. Always remember that we all live in one earth and we all need to preserve it. So let us do it together.
Bibliography
"Business Energy Waste." Pays to Live Green. 14 May 2009. 23 May 2009 http://www.paystolivegreen.com/2009/05/business-energy-waste/.
"KID'S INFO." Solar Energy International. Ed. SEI. 23 May 2009 http://www.solarenergy.org/resources/youngkids.html.
Larson, Chris. "The passive solar home: fed up with high energy bills? Make your house into a solar collector! Architect Chris Larson tells how." New Life Journal April & may 2002: 8(2). Srudent Resource Center - Gold. Gale. ADMC, Abu Dhabi. 17 May 2009 http://0-find.galegroup.com.library.hct.ac.ae/srcx/retrieve.do?subjectParam=Locale%252528en%25252C%25252C%252529%25253AFQE%25253D%252528su%25252CNone%25252C20%252529passive%252Bsolar%252Benergy%252524%257E%2529_2&contentSet=IAC-Documents&sort=DateDescend&tabID=T003&sgCurrentPosition=0&subjectAction=VIEW_TOPIC_TREE&prodId=SRC-1&searchId=R2¤tPosition=10&userGroupName=971hctnet&resultListType=RESULT_LIST&sgHitCountType=None&qrySerId=Locale%28en%2C%2C%29%3AFQE%3D%28SU%2CNone%2C30%29%22Passive+Solar+Energy+Systems%22%24&inPS=true&searchType=BasicSearchForm&displaySubject=&docId=A87703742&docType=IAC.
"Solar power." Wikipedia. 20 May 2009 http://en.wikipedia.org/wiki/Solar_power.
Another aspect of my point of view is that poor countries, such as Africa and some countries in Asia cannot afford money to achieve such project for it need lots of money. If so, they will afford it to help their refugees and heal their sickness first. Yet, they need hundred years more to go green.
How about people’s lifestyle? Although the facilities are provided, yet there are some difficulties to deal with. Not everyone can live in this type of city unless he is environmentally friendly (Masdar’s). It is also difficult for people who live in hot countries use the bike and walk instead of using their own car, because of the heat which you can feel it even if you are under the shade. 
In Conclusion, I believe that not everyone will live in cities like Masdar even if we reach the year 2050. In my opinion, although this project will reduce the CO2 and save the earth, yet I’m not convinced that all people will accept to live in.