One short fact about global warming is that the Earth's average temperature has already risen by about 1.1 degrees Celsius (2.0 degrees Fahrenheit) above pre-industrial levels, and the majority of this warming has occurred in the past few decades.

One of the primary benefits of renewable energy is that it is much cleaner than traditional energy sources such as coal and oil. Fossil fuels emit greenhouse gases when they are burned, which contribute to global warming and climate change. Renewable energy sources do not emit these harmful gases and can help reduce the amount of carbon dioxide in the atmosphere. This is especially important given the urgent need to reduce carbon emissions and slow the pace of global warming.

Renewable energy also has the potential to be more cost-effective than traditional energy sources in the long term. While the initial investment in renewable energy infrastructure can be significant, the ongoing costs of generating energy from renewable sources can be much lower than those of fossil fuels. Renewable energy sources are also less vulnerable to price fluctuations than fossil fuels, which can be affected by geopolitical events and market forces.

Another benefit of renewable energy is that it can help create new jobs and industries. As renewable energy becomes more widespread, there will be a growing demand for skilled workers in fields such as engineering, construction, and maintenance. This can help stimulate economic growth and provide new opportunities for workers.

Germany spent around 26.2 billion euros on renewable energy in 2020.