Japanese government started the subsidy and feed-in tariff policy on PV from 2009.11.1, and at present the policy is only apply to the roof-top PV system, not available to the PV plant and other systems.
        日本政府于2009年11月1日开始进行太阳能发电的补贴政策和发电买进政策，该政策目前还只是面向于住宅用户安装的太阳能发电系统，对于太阳能发电场类的地面项目还没有正式出台补贴政策。

        And as we know, from 2011 on, there would be policy apply to all the PV systems, and the expected subsidy could be 460 billionJPY to 630billionJPY(about 5.6billion USD to 7.7billion USD) per year from 2011 to 2020.
        有消息称，2011年起，会有面向全部太阳能发电工程的补贴政策，目前仅能预计从2011年到2020年期间，日本对于太阳能的总补贴费用将会达到每年4600亿日元到6300亿日元。

                     

        Remark: Until now, all the subsidy fee for 2010 have been used out, which means if the application was submitted in Dec, it could not obtain the profit of policy.
        备注：截至目前，日本2010年补贴费用已全部使用完毕，也就是说12月份再提交申请的屋顶系统将无法再享受到政策。