giovedì 25 settembre 2014

High Performance Pv Panels

There are two brands in the world that produce high-performance solar panels. The Californian Sunpower and the Japanese Sanyo (now owned by Panasonic). What do we mean by the word "high efficiency". It' photovoltaic modules with efficiency that approaches or exceeds 20%. Normally the low cost panels (eg Chinese ones) stop at a yield of 13-14%, a little higher for the expensive ones.
Take for example the Hit series of sanyo, look here for the datasheet. Hit stands for Heterojunction with intrinsic Thin-layer, a mix between crystalline silicon and thin film. In this case Sanyo utilizes both technologies to increase the energy yields.
Pic on the left shows the results of a test carried out by SANYO in Garching (Germany) during 365 days between the first 1 January 2009 and 31 December 2009. In this test were used HIT-240/235 HDE4 SANYO PV modules compared with other pv competitors in the same conditions: the roof facing south, 30 degree incline, SMA 1700 BC inverter. The diagram shows that the SANYO HIT modules have an energy efficiency significantly higher than the other (source Sanyo website).
Sunpower: the E20 series (modules with power ranging from 333 and 327 watts) comes to reach an efficiency of 20%, compared to an average of 14-15% of the other competitors.
Sunpower modules got a 25-year warranty also solar panels allows you to produce more energy on the same surfaces compared with conventional models. This results in a greater conversion of sunlight into electricity, and then a smaller space occupied by the modules.
Pro:
the High Performance Pv Panels offer maximum results with minimum effort, it is certainly the best solution, both for family pv implants and for company. By installing a system by Sunpower or Sanyo-Panasoni you will be certain to enjoy efficient solar plants, covered by a warranty of 25 years.
We also talk about a brand that offers solutions for all brands and needs and able to ensure maximum efficiency and reliability and a guaranteed return over time. Quality materials, tested repeatedly, a guarantee in the long run.
Prices: about 1,5 dollars per watt (2014 prices).
Ranking of the best solar modules in the world for performance:
1. Sunpower 20.40% E20 / 333 pv
2. AUO 19.50% PM318B00
3. Sanyo Electric 19.00% HIT-N240SE10
4. Jiawei 18.30% JW-S100
5. Crown Renewable Energy 18.30% Summit 100LM
6. Idea Solar 17.50%
7. Winaico 17.15% WSP-285M6
8. PVT Austria 16.88%
9. JA Solar 16.84%
10. Zytech 16.84% ZT 215S

venerdì 19 settembre 2014

DIY Solar Power - Pros and Cons

Solar power is a more beneficial source of energy as it does not give off toxic pollutants into the atmosphere unlike oil. For this reason, a growing number of homeowners are starting to switch to the use of residential solar power as their main source of energy in their homes.
Because of the continually rising cost of utilities, many individuals find it hard to pay their bills or feel the need to cut back in their consumption in order to accommodate their budget. Switching to solar energy by constructing your own solar panels to produce electricity is a more earth-friendly solution to rid yourself of costly monthly bills. This can be accomplished without altering your lifestyle or restricting your consumption to make ends meet.
the prohibitive cost of materials and installation of solar panels is one of the major downside to get solar power completely off the ground. This situation, however, is no longer an impediment to the wide scale use of residential solar power with the DIY approach. The disadvantage of doing it by yourself can take much longer than hiring professionals. You may also make mistakes that may be difficult or impossible to undo.
Kits and instructions are available online with easy to follow step by step videos so you can construct your own solar panels at home. The cost of these kits won’t even go beyond $200 if you decide to build it yourself.
One typical downside, however, is that residential solar power is only useful when the sun shines. It won’t produce energy at night or during overcast days. However, there are monocrystalline panels that can work even in low light conditions and can make the most out of the available daylight hours.
During these hard financial times, especially if you are not too sure to bring home your next paycheck, every little bit of savings help. Building a DIY residential solar power unit is a great move in freeing yourself from the bondage of the rising prices.

giovedì 4 settembre 2014

Stuff You Need To Know About DIY Home Solar Power Systems

Installing a homel solar power system on your own is not as difficult as it seems. But there are indeed certain things that you have to be aware of and some additional stuff to consider.

First, you must get the estimated size of your home solar power system. There are ways to compute this, and there are websites that will teach you how. Once you have the estimated the right size, you can now consult with a reputable solar power system installer to help you determine other essential things that you will need in preparation for setting up your home's new power source. A reputable installer will also be able to tell you any state-mandated requirements that you have to complete prior to installing the solar power system.
As another option, DIY solar kits are now available in the market for homeowners who would like to try building their own residential solar power system. An understanding about electrical systems is a requirement in order to assemble kits like this.
There are different advantages to be derived from using the power of the sun as a household's main source of electricity. The main advantage is related to the savings that homeowners can have in their utility costs. The home powered by solar energy is no longer largely dependent on the electricity generated by a utility company. Thus, great savings is possible and highly desirable, especially during these times when the entire world is beleaguered by skyrocketing oil prices and the inevitable depletion of traditional fuel sources.
Another great advantage attributed to home solar power is its friendliness to the environment. Here is one power source that does not require numerous machines and equipment to set up and operate. Furthermore, the generation of solar power does not necessitate the destruction of land areas. Most importantly, there are no carbon emissions when this type of power source is used.