This paper analyzes the impact of changes in energy prices on the competitiveness of manufacturing firms in Chile. Using the Chilean Annual National Industrial Survey data, the paper illustrates that, first, increases in energy prices generally do not hurt firm competitiveness. Second, the impact of energy prices depends on the fuel type-while electricity price increases are negatively correlated with firm outcomes, fossil fuel price increases have a positive association with investment and firm productivity, a result that is consistent with the strong version of the Porter hypothesis. Third, these effects are heterogeneous and vary by firm attributes such as size, ownership and location. Fourth, investigating non-linear patterns in firm outcomes based on the level of energy prices, the findings show that the positive correlation between fossil fuel price increases and capital upgrading is particularly pronounced when energy prices are at relatively low levels.