The cost of solar modules has risen to levels last seen in 2018 – partly due to the global inflation affecting so many different raw materials and services such as freight, but primarily because of the ongoing polysilicon shortage, caused by production that couldn’t keep pace with sudden demand growth. That shortage of production capacity has now been joined by rising power prices – and power rationing. Besides affecting power-hungry polysilicon production costs directly, industrial controls and other parts of the solar supply chain have also been impacted. Little is being reported from China this week, because most of the country’s newsmen, not to mention the rest of society, are enjoying the week-long Chinese National Day holiday. That hiatus includes…