The latest NPD Solarbuzz Quarterly report is forecasting the two countries will account for more than 45% of the world's solar demand between now and 2014, supplying a large chunk of a predicted record full year demand figure of 35.1 GW.
Solarbuzz' figures show Japan and China, together with Germany and the U.S. accounted for more than 60% of the 15 GW of global solar demand from January to June.
With demand in the first half of 2013 rising 9% year on year and 22% on the second half of last year if the predicted 20 GW materializes in the rest of 2013, the figures appear a reason for optimism.
But Solarbuzz points out the market is becoming increasingly dependent on Japan and China with Europe set to supply less than 30% of demand in the remainder of 2013, compared with almost 50% for the period July to December 2012.
Of the 15 GW supplied in the first half of 2013, 45% was large scale utility and commercial ground mount, 20% residential rooftop and the remaining 35% non-residential rooftop and off-grid.
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