Scientific American reports: The installed price of solar energy has declined significantly in recent years as policy and market forces have driven more and more solar installations.

Now, the latest data show that the continued decrease in solar prices is unlikely to slow down anytime soon, with total installed prices dropping by 5 percent for rooftop residential systems, and 12 percent for larger utility-scale solar farms. With solar already achieving record-low prices, the cost decline observed in 2015 indicates that the coming years will likely see utility-scale solar become cost competitive with conventional forms of electricity generation.

A full analysis of the ongoing decline in solar prices can be found in two separate Lawrence Berkeley National Laboratory Reports: Tracking the Sun IX focuses on installed pricing trends in the distributed rooftop solar market while Utility-Scale Solar 2015 focuses on large-scale solar farms that sell bulk power to the grid.

Put together, the reports show that all categories of solar have seen significantly declining costs since 2010. Furthermore, larger solar installations consistently beat out their smaller counterparts when it comes to the installed cost per rated Watt of solar generating capacity (or $/WDC). [Continue reading…]