Hydro power is a common example of an energy source that is renewable but isn’t necessarily ‘clean’ as building a hydro-dam can have a negative impact on the environment around where the dam is located.
Our current energy infrastructure is still using fossil fuels that overload our air with harmful greenhouse gases. This causes changes in our environment which are both dangerous and costly. Water levels are rising all over the world and hundreds of thousands of acres of land are being burnt by wildfires caused by extreme temperatures, costing property owners and tax payers billions.
But replacing our fossil fuel infrastructure will take time. We have become completely reliant on this energy source in order to sustain our societies and 64% of our electricity use is still being powered by fossil fuels globally.
New technology is consistently improving and driving down the cost of clean and renewable energy, and pressure on the market means that we’re finding ways to use fossil fuels at a much slower rate (for example, for the production of cleaner energy sources). In 2020, renewable energy sources accounted for about 12% of total U.S. energy consumption and about 20% of electricity generation.