Trump's tariffs prevent renewable energy from advancing. Solar is expensive for the average consumer, because the advancements are new. The price of solar was steadily dropping as years went on, and it was predicted that in some years, it would be cheaper than many non-renewable resources. When more solar products are sold, companies are able to invest in advancing their tech to make it easier and more affordable. The USA had aided in research in the past, taking a step forth in backing reliable methods of energy but these tariffs are hurting a relatively new solar economy and prevent progress.