After Solar Panels,Solar Inverters are the second most crucial component of the overall solar system accounting for around 10% of the overall costs.Solar inverters connect the solar panels to the grid converting the DC to AC which is used by the grid.Note for off grid solar installations,solar inverters are required as most electrical devices need AC for their operation.There are both grid tied and non grid tied inverters available on the market.Solar inverters have become highly sophisticated with features like optimization and monitoring etc.The efficiency of solar inverters are a major factor in their purchase as well as the quality and reliability.Inverters comes in various sizes and can be as large as 1 MW for utility applications.Note unlike solar panels,solar inverter manufactures are much bigger in size with SMA Solar having a 40% global marketshare.
Soar Rebates are a very important decision making factor when buying solar panels for your home or office or factory.The reason is that solar energy today is still not competitive with fossil fuel energy.However the costs of solar energy have declined dramatically in the recent past.It is estimated that solar energy will be competitive with coal,gas and other fossil fuels in 2-3 years in most places around the earth.In fact it has already reached “grid parity” in a number of countries like Italy,Hawai where there is a lot of sunshine and the cost of electricity is also high.Australia too has a large number of sunny hours which makes it ideal to install solar panels.State governments in Australia have been at the forefront of giving rebates and subsidies to promote solar energy in the country.This has resulted in a large boom of solar installations among residents in the country who are taking advantage of the generous subsidies.Though recently a number of provinces like New South Vales and Victoria have reduced the solar rebates , the falling cost of solar panels in Australia has still made it attractive enough for people to put up solar panels.
Most of the state government Feed in Tariff Schemes have closed down under a deluge of applications and have reached the limit.Now the rebates for solar energy is federal in nature where you can receive a Renewable Energy Certificate (REC) or Solar Credit for the solar energy generated from solar panels.Here is a list of the solar rebates and subsidies available in different states of Australia.
Solar Power in India has been growing at an explosive pace due to declining costs of Solar Energy and incentives given by the Government of India under JNNSM.While most of the subsidies for solar energy in India are going to large solar farms,Solar Lighting is also growing steadily without any support.This is due to the fact that Solar Lighting saves on electricity costs and is also environment friendly.Solar Lighting in India is gaining traction not only in the upper income segments but also at the bottom of the pyramid.Solar Lanterns and Lamps are replacing expensive,GHG emitting kerosene lamps in poor rural as well as urban India.Depsite shoddy subsidies,solar lamps have become economic to compete with fossil fuel alternatives.Solar Lighting is also being heavily used for Street Illumination in places where the electricity grid is not present.Solar Lighting is also gaining acceptance in use in gardens where they can capture sunlight in the morning and light the gardens in the night using the stored energy.
Amorphous Silicon Solar Panels were the big rage in 2-3 years ago when the prices of polysilicon the main raw material were touching $500/kg making the mainstream crystalline silicon solar panels very expensive.Amorphous Silicon (a-Si) on the other hand is a non-crystalline silicon which is deposited as an extremely thin layer on glass and other substrates.The cost of the silicon is much lower though the efficiency of solar cells which are made from a-Si is about half of those made from crystalline silicon.Applied Materials with its SunFab turnkey amorphous silicon (a-Si) equipment capitalized on this opportunity, lining up a number of customers with some customer orders in the range of a Billion Dollars.Oerlikon Solar was the other major thin film equipment market winning customers in Europe and China.Sky high poly prices also gave birth to numerous Thin Film startups planning to Manufacture and Use their own equipment rather than selling it .
Solar ETFs are in the new because of a spectacular decline in 2011 caused mainly by the massive oversupply of Chinese solar panels.This has resulted in the two solar ETFs TAN and KWT making new all times lows.The main reason is the huge negative sentiment towards green energy stocks in general because of the lack of support towards climate change and over competition from Asian companies.However the Solar Industry is one of the best growth industries and the leaders who come out of this consolidation will have a bright future.You can see the 100 solar energy stocks to pick up what you think would be the leader.For less ambitious mortals you can look to pick up the TAN Guggenheim ETF which is the biggest solar ETF.You can also look at the comparison between TAN and KWT to decide on what to buy.Note Solar Energy’s biggest advantage is the falling costs of solar panels which is bad for the solar companies but great of solar demand and customers.When the weaker hands go out of business which is already happening (Solyndra),the solar companies that remain will make huge profits as they did in 2010 when demand surged by 150%.
Solar Trackers are used to increase the Energy Output from Solar Panels and Solar Receivers.Solar Tracker is a Device which follows the movement of the sun as it rotates from the east to the west every day.Solar Trackers are used to keep solar collectors/solar panels oriented directly towards the sun as it moves through the sky every day.Using Solar Trackers increases the amount of solar energy which is received by the solar energy collector and improves the energy output of the heat/electricity which is generated.Solar Trackers can increase the output of Solar Panels by 20-30% which improves the economics of the solar panel project.