FSLR can only sell in the U.S. due to the Trumpian tariffs for the premium. That premium is quickly fallen. The ROW they are now not competitive. That is 20% of their shipments if I recall.
As for the U.S. There is also 2.5GW of tariff free that can be imported and Sunpower can import unlimited tariff free modules. They will be getting those modules on the cheap with the ASP collapse. Now as for the ASP collapse, here is a nice link that covers the impact on foreign pricing that you can now adjust for current ASPs.
The first year was expected to have a 10-12 cent impact. based on module low and high prices.The second year it falls by 5% to a 25% tariff. It was expected that based on a 32 to 38 cent module ASP the impact would add 8-10 cents. Now the reality is that the module prices are now in the $0.24-$0.28. That places the impact at 7.2-8.5 cents for the rest of the year. Starting February 2019 the rate drops to 25% and the impact on the module drops to 6-7 cents. So the ASP will soon be $0.30-$0.35 for 2019 at most.
In all probability with 2.5GW of tariff free modules to subisdize the profits, the ASP could be $0.28-$0.33 in 2019 especially when looking at Sunpowers unlimited imports. Jinko and others are ramping U.S. module manufacturing as well. They will be importing solar cells at cost or $0.09-$0.013(multi Mono). With the tarrif impacts the cost is $0.115- $0.165. That means at 12-13 cents for module processing their costs for Multi will be around $0.245 and mono at $0.275. From that the ASP will stay in that upper $0.20s to low $0.30s for ASPs.
By the time the S6 lines are ramped come 2020, the tariff impact will only be 20% and if trends continue as China moves wafering to low energy regions of inner Mongolia and cheaper Si is abundant, then the cost for US manufactured will be in the $0.23-$0.26 range with an ASP under $0.30. Those Chinese imports will be almost as competitive.
There is not a lot of meat on the bone for FSLR at those ASPs.