difficulty in writing engineering essays

Writing has always been an important part in engineering research. When I study engineering courses, I must also practise writing scientific essay. However, writing has not been my strength and there are some areas in which I make common mistakes.
One of these mistakes is in organisation. Argumentative essay are very particular about organisation. When presenting an argument, it is very important to be able to present the ideas in a organised manner. Sometimes I tend to be confused in the middle of my writing when my ideas are presented half way. Therefore, thinking logically in English is important for writing so as to be able to present your ideas clearly.
Another common mistake is grammatical; the usage of words can be difficult for me. It can be misleading when I use the words in the wrong way and the ideas become unclear. Therefore, is important to use the right word at the right time.
When writing engineering related essays, there are difficulties in terms of sentence structure. The ideas of engineering must be presented in such a way that they are easy to understand. Therefore, it is challenging for me to put across my points such that the reader can understand my stand. One way to improve this area is to read more on scientific reports and essays so that the way to present can be part of my writing habit.
There are some other techniques to improve my writing. Including making English an important part of my daily life. This can make my English language come more natural during writing. Another way is practice writing, more practice can increase my accuracy when illustrating my stand and ideas.
There can be quite a few problems when I do my writing in engineering classes, including the language itself and sentence structure which plays a more important part in engineering essays than narrative essays. Therefore, a clear mindset is also important. However, I believe these problems can be resolved through practice and more reading.

grand challenges

Nothing is comparable to the energy from the sun, but we are using only a tiny fraction of capability of solar power. Solar power is alternate energy source which is clean and sustainable in the long run. Current solar cells are offering an efficiency of only 10 to 20 percent, which, when compared with the cost can be very expensive. There are new experiments showing that the use of nanocrystals can effectively increase the efficiency of solar cell to a level of around 60 percent, however, new ideas are needed to transmit energy generated this way into circuit.
One important aspect in solar power development is in making it economical. “This area is where breakthroughs in the science and technology of solar cell materials can give the greatest impact on the cost and widespread implementation of solar electricity,” Caltech chemist Nathan Lewis writes in Science. Material purity is very important so as to maximize flow of current through the cell. There are new system designs in both physical structure and material component to increase the efficiency of solar cell. However, improvements are still needed so that such systems are economical.
While being clean and powerful, we still face problem of storage when we use solar power. Solutions are needed to reserve energy for circumstances when sunlight is not readily available. Technology in energy storage is very important. A possible solution is conversion of energy using sunlight like photosynthesis in plants, so as to produce fuel for energy generation. Another possible is to generate energy out of natural resources, like producing hydrogen from water using solar power. If new catalyze could be found to improve efficiency, the power source could be proved powerful and environmentally friendly.
If we can minimize the cost of solar power, it can make incomparable contribution to our civilization.

References
Lewis, N.S. 2007. Toward Cost-Effective Solar Energy Use. Science 315(5813): 798-801.