This article by Kyree Leary (Futurism 12 January 2017), says that the evidence is that on sa global scale fossil fuels are being replaced by renewable alternatives, and there are two major reason behind it. Public opinion is demanding it and these alternatives are now becoming cheaper and will be cost effective in a few years.

Renewable energy may not be completely replacing fossil fuels just yet, but it’s undeniable that society is warming to the idea of using solar and wind power in place of coal. In some parts of the world we’re already beginning to see the effects of such a paradigm shift: Last year, Britain began generating twice as much electricity from wind than coal, which contributed to 2017 being the greenest year ever for the United Kingdom.

In the United States, solar and wind power accounted for nearly 95 percent of all new electricity capacity added last year, according to Engadget. That success can also be partially attributed to the closures of fossil fuel plants.

In the coming years, we’re sure to see renewable energy become a real competitor in the fossil fuel industry. A new report recently published by the International Renewable Energy Agency (IRENA), predicts the cost of renewable energy will experience a noticeable drop by 2020, putting it on par with, or cheaper than, fossil fuels.

The report, titled “Renewable Power Generation Costs in 2017,” read: “[By 2020,] all the renewable power generation technologies that are now in commercial use are expected to fall within the fossil fuel-fired cost range, with most at the lower end or undercutting fossil fuel.”

Fossil fuel generation today costs between $0.05 – $0.17 per kilowatt hour in G20 countries, including the U.S., the U.K., Russia, Japan, India, and Germany. By 2020, however, renewables are expected to cost $0.03 – $0.10 per kilowatt hour, with the price of onshore wind power and solar photovoltaic (PV) projects expected to be as low as $0.03 per kilowatt hour by 2019.

Presently, offshore wind projects and solar thermal energy can still be quite costly, but they too are expected to drop in price between 2020 and 2022 — to $0.06 – $0.10 per kilowatt hour.

“This new dynamic signals a significant shift in the energy paradigm,” said Adnan Z. Amin, IRENA Director-General, in a statement. “These cost declines across technologies are unprecedented and representative of the degree to which renewable energy is disrupting the global energy system.”

Changes to come

If IRENA’s predictions prove to be true, the lower price of renewable energy will certainly make it harder for the fossil fuel industry to ignore. Renewables will soon be both environmentally friendly, and cost-effective.

We’ve already seen signs of fossil fuels doing more harm than good on both counts. First, U.K.-based think-tank Carbon Tracker Initiative reported in December that coal plants are becoming more of a financial burden, with over 50 percent of coal plants in the U.K. incurring losses. By 2030, 97 percent of remaining coals plants are expected to be in the same situation.

An incident in South Australia made headlines when Tesla’s newly-installed megawatt battery had to quickly save the day, protecting a power grid from an impending coal plant failure. The incident showcased that renewables and the technology that enables them are capable of covering for fossil fuels when then fail.

Amit Dave/Reuters

“Turning to renewables for new power generation is not simply an environmentally conscious decision, it is now — overwhelmingly — a smart economic one,” continued Amin. “We expect the transition to gather further momentum, supporting jobs, growth, improved health, national resilience and climate mitigation around the world in 2018 and beyond.”