Inventory levels rose significantly in 2009 as numerous economic factors kept solar cell production growth at “only” 26.5 percent, far from the average yearly growth rate of nearly 50 percent. Combined with a surge of new solar companies entering the market with thin-film-based cells, supply clearly exceeded demand, and inventory grew from an average of 71 days in 2008 to 90 days in 2009 (see chart below).

In 2009, our research shows that 7,116 MW of solar power was consumed, but plants worldwide had a capacity of 19,013 MW, bringing utilization levels to 37.4 percent.
For 2010, we forecast an increase in solar panel consumption to 14,389 MW. At the same time, new additional capacity will be brought on board to levels of 28,507 MW. This will bring capacity utilization to 50.5% and reduce inventory to 67 days on an average for all of 2010.
Solar power production will reach 30.7 GW in 2012, a CAGR of 51.1 percent between 2003 and 2012.
Forecast of Solar Module Installation in Megawatts (MW)

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