A science journalist is analyzing a graph showing the growth of renewable energy usage over 5 years. The usage increased exponentially, doubling every 2 years. If usage was 120 terawatt-hours (TWh) in year 1, what was the total renewable energy usage across all 5 years?

Thu, 30 Apr 2026 07:35:39 +0000

A science journalist is analyzing a graph showing the dramatic rise of renewable energy usage across five years in the United States—proof that clean energy adoption is shifting from a niche topic to a mainstream transformation. Current data reveals an exponential growth pattern, with usage doubling every two years. This trend is no longer confined to academic circles; it’s driving media coverage, investment decisions, and public policy discussions nationwide. The narrative unfolds sharply: starting from 120 terawatt-hours (TWh) in year one, renewable consumption rapidly scales. By year two, it reaches 240 TWh, then 480 in year three, 960 in year four, and 1,920 TWh by year five. This doubling pattern creates a clear inflection point—more renewable energy is being deployed than in prior years, reflecting both technological progress and rising societal momentum. This exponential curve signals fundamental shifts in energy systems and infrastructure. The doubling every two years suggests growing effectiveness in solar, wind, and storage deployment. The data also mirrors broader patterns: as backup systems improve and costs drop, adoption accelerates in a cycle fueling further innovation. Such a trajectory captures attention in the US due to intersecting cultural, economic, and environmental pressures. Rising concerns about climate change, growing energy independence goals, and technological breakthroughs combine to make renewable growth a topic of national interest. For millions following energy news or planning sustainable energy transitions, this represented one of the clearest indicators of clean energy’s deepening integration into daily life.