Solar Panels are sold by hundreds of companies around the world ranging from small to very large and comes in various shapes and sizes as well.Besides this solar panels are also made of very different materials for example silicon solar panels and thin film solar panels.So comparing solar panels and choosing a solar panel is a very difficult process if you want the best solar panel according to your need.The most efficiency solar panels are needed in cases where the land area or rooftop area is at a premium.Note a typical 200-250 watt solar panel requires an area of 60×38 inches which means an area of around 2000 square inches.1 megawatt of solar panels would require an area of between 5-10 acres of land depending on the efficiency of the solar panels.However this can be reduced by using solar trackers which can increase the output of solar panels though they to increase the area requirement slightly.Also the area also depends on the location of the place since a place recieving high sunlight for example California would require lesser area for generating the same amount of electricity compared to London (upto 30% fewer solar panels).Note solar panels with higher efficiency have a higher price tag associated with them since they require higher cost to manufacture.The most efficiency solar panels which are used in spacecraft and have a efficiency of around 35-40% may cost upto 100 times more than the normal silicon solar panel.

China’s Solar Industry is the biggest in the world with 5 of the biggest Solar Panel Manufacturers being Chinese.The low costs of Chinese Solar Panels have made them capture almost 40% of the world’s market in 2010 up from almost 0% in 2005.The remarkable growth in the Chinese Solar Panel Industry has been due to the supportive government,low labour and capital costs and aggressive competition.This has made the higher cost solar panel manufactures cut their prices in order to retain their marketshare.Trina Solar has shown the best growth amongst the solar panel producers and it now competes with Suntech which is the world’s biggest solar panel producer.China has also got a number of Tier 2 and Tier 3 producers of solar panels.These small solar panel companies sell mostly in the spot market and quote very low prices.The quality of the solar panels of smaller companies is also suspect.Due diligence and Review of Solar Panels is necessary in order to Buy Solar Panels from China.

The US is the world’s largest electricity producer and consumer with a total electricity capacity of around 1 Terawatt.The share of Solar Energy in the US Electricity Production is negligible compared to around 19% for Nuclear Energy and around 2-3% for Wind Energy.However Solar Energy in the US is set to grow at high double digits over the next 2 decades as the Costs of Solar Energy Decline with prices of other Energy Forms set to rise.In some states like Hawaii and California,solar energy prices are already at grid parity with retail electricity prices.Some states like New Jersey,Colorado,Arizona have seen sharp increases in solar energy adoption over the last 2-3 years boosted by state specific government policies and subsidies.With the US Federal 30% Cash Grant on System Costs and falling systems prices for solar systems,the growth in inevitable.The US Solar Market has seen the rise of a number of innovative and fast growing system integration and installers.Some companies have come up with innovative financial solutions to solve the high initial investment hurdles in solar systems through leasing and financing plans.Here are a list of Top US Installers/System Integrators.Note the list will keep expanding in the coming years as the size of the US Solar Energy Market Grows.

Solar Energy is the fastest growing renewable energy source in the world and has shown tremendous growth in the last 2-3 years.This has been driven by a more than 50% decline in Solar PV costs which continues to decline further.With further increase in energy prices,Solar Power is becoming closer and closer to retail electricity price.Not only is the price declining,solar power is clean energy a most valuable feature in these days of accelerating climate change.Solar Energy has already reached grid parity in places like Italy and Hawaii and will do so in more places in the coming 2-3 years.The industry is a dynamic one and the list of top solar companies can change quickly.Rapid Technology Change and Fast Declining Costs have pushed out most of the Top 10 companies of 5 years ago and brought in new ones mainly Chinese.Here is a list of the Top Solar Panel Producers in the World.

First Solar,the US based Cadmium Tellurium (Cd-Te) is the lowest cost panel producer in the world today if you don’t include any penalty for low efficiency.Even if you penalize the Cd-Te Technology for its lower efficiency vis-a-vis the higher efficiency crystalline technology,First Solar is clearly the leader with a core cost of 74c/watt.The company has a roadmap of reducing the cost to 52c/watt by 2014 and given its track record it seems quite achievable.In Cd-Te,some new competitors have claimed even lower costs than First Solar but they have yet to prove it in large scale production.General Electric,Abound Solar are some of the other Cd-Te players which are planning commercial production in a year or two.But with around 2 GW of capacity,they will have a lot of catching up to do.

However Solar Capacity in the Industry has increased rapidly particularly in Taiwan and China.Besides Semiconductor and LCD Heavyweights like AUO and TSMC have made huge investments into Solar Production.Korean Companies are too making a strong entry into the already crowded segment.Despite some capacity build in the wafer and module parts of the supply chain,Taiwan remains largely a cell producer.Compared to the integrated Chinese producers like Trina,Yingli,LDK and others,Taiwanese Solar Makers are vulnerable to sharp price cuts.They depend on European customers who are largely uncompetitive and would face huge pressures with the decline in the German market.Chinese producers have much lower costs due to their vertical integration which currenly most Taiwanese lack except Motech.Taiwanese Cell Capacity is set to increase manifold next year from the current 5 GW.Most of the Tier 2 Cell Producers would be running empty while even Tier 1 players will see a sharp decrease from this year.