2017 year end inflation was between 1.8 and 2.1% using the big three measures CPI/Core CPI/GDP Deflator.
Tariffs need a few months to show up in higher prices. Utility scale solar tends to be made in USA and rooftop in China. China has a glut and is slashing prices already, to keep production up they may have to cover the tariff themselves. It is a lousy business to be in, high capital and r&d costs and falling prices. We should let the Chinese have it.