The Wikipedia wiki 100% renewable energy has some interesting statements.
https://en.m.wikipedia.org/wiki/100%25_renewable_energy
Quote: << However, recent studies show that a global transition to 100% renewable energy across all sectors – power, heat, transport and desalination well before 2050 is feasible.[5][6][7] Existing technologies, including storage, are capable of generating a secure energy supply at every hour throughout the year. The sustainable energy system is more efficient and cost effective than the existing system.[8] In its 2011 special report, the Intergovernmental Panel on Climate Change already stated that there are few fundamental technological limits to integrating a portfolio of renewable energy technologies to meet most of total global energy demand. Renewable energy use has grown more quickly than even advocates anticipated.[9] Global smart grid technologist, Steve Hoy, originated the concept of “True Zero” as opposed to “Net Zero” to express the emerging capability to trace electricity in order to drive 24/7 100% renewable energy adoption.[10] As of 2019, however, it needs to grow six times faster to limit global warming to 2 °C (3.6 °F).[11] >>
<< In 2015 a study was published in Energy and Environmental Science that describes a pathway to 100% renewable energy in the United States by 2050 without using biomass. Implementation of this roadmap is regarded as both environmentally and economically feasible and reasonable, as by 2050 it would save about $600 Billion Dollars health costs a year due to reduced air pollution and $3.3 Trillion global warming costs. This would translate in yearly cost savings per head of around $8300 compared to a business as usual pathway. According to that study, barriers that could hamper implementation are neither technical nor economic but social and political, as most people didn’t know that benefits from such a transformation far exceeded the costs.[72] >>
