Final answer:
Renewable energy, especially solar and hydroelectric power, is becoming more essential worldwide, outpacing fossil fuels due to environmental and economic factors.
Step-by-step explanation:
The energy type that is becoming increasingly essential worldwide is renewable energy. Renewable energy sources, such as solar, wind, and hydroelectric power, are growing faster than fossil fuels and are expected to become the most used energy source by 2050. This shift towards renewable sources is driven by the need to address environmental concerns like climate change and pollution, as well as economic and security issues related to the dependence on fossil fuels. The future of energy is also influenced by advancements in technology, regulatory pressure on carbon emissions, and the availability of natural resources.