The passing this week of legislation in Vietnam, which continued its regime of solar feed-in tariffs must have brought a great sigh of relief from developers there, who can now go ahead and start building out their solar projects. The deadline is brutal – this December, and after that more uncertainty. Vietnam gave the global solar industry a shot in the arm last year, installing close to 4 GW of solar, due to the last round of feed-in tariffs begun in 2017 – this was about 5% of what the world installed last year – allowing manufacturers to hit their shipping numbers despite a 20 GW shortfall in expectation in China. Other countries which upped their solar game last year…