In past years, if you itemized your deductions, you could deduct qualified medical and dental expenses to the extent they exceeded 7.5% of your adjusted gross income (AGI). However, beginning January 1, 2013, this threshold was raised to 10%.
Worldâs Largest Solar Panel Manufacturer Suntech Declares Bankruptcy in China. Environment. Suntech was once the worldâs largest manufacturer of solar panels â but the company was just pushed into bankruptcy after defaulting on $541 million in bond payments. The company was a powerful force in Chinaâs renewable energy market, generating 2.4 gigawatts worth of solar modules in 2011 alone. But the company faced a rapid decline as solar panel production in China increased tenfold over the past five years, causing prices to drop by as much as 75 percent.
Polycrystalline Silicon Solar Cells. The first solar panels based on polycrystalline silicon, which also is known as polysilicon (p-Si) and multi-crystalline silicon (mc-Si), were introduced to the market in 1981. Unlike monocrystalline-based solar panels, polycrystalline solar panels do not require the Czochralski process.