Humanity is at a crossroads where we choose how to power the future. Locking in global warming emissions for a few more decades, depending on the power infrastructure we are building today, would also lay a solid foundation for a clean energy future and help prevent the worst of the climate emergency. You can also stop the impact.
The choice is urgent as the window to meet the 2015 Paris Agreement goal of keeping global temperature rise to well below 2 degrees Celsius by the end of the century is closing rapidly. The latest Intergovernmental Panel on Climate Change (IPCC) report states that the world will need to make rapid and significant emissions reductions to meet its goals and ultimately achieve net zero emissions by 2050. I am emphasizing something. Hydropower will be a key component of that effort. “The targets are very ambitious,” says Heymi Bahar, senior energy analyst at the International Energy Agency. And every year, without major climate action, “we’re basically losing carbon dioxide. [budget] That remains and we need to go faster in broader ways. In that sense, according to our model, most of the work should be completed in the next seven years,” he said.
There are encouraging signs that this transition is underway, such as the significant growth of renewable power generation in recent years. However, according to many experts in the field, hurdles remain and the speed of transition needs to be accelerated.
Globally, renewable energy accounts for about one-third of electricity production, and the share is increasing. According to the International Renewable Energy Agency (IRENA), renewable energy capacity increased by a record 295 gigawatts in 2022. Moreover, renewable energy accounted for more than 80% of all power capacity added last year, the agency reports.
Last year, renewables produced more electricity than coal-fired power plants in the United States for the first time. Wind and solar produce about 14% of the country’s electricity today, compared to virtually none just 25 years ago. The U.S. Energy Information Administration expects more than half of the electricity generation capacity added to the nation’s grid in 2023 will come from solar energy.
A major reason for the strong growth of renewable energy in recent years is the dramatic decline in the cost of solar and wind power. The cost of photovoltaic cells has dropped significantly by 90% over the last decade. This is in part due to increased manufacturing, especially in China, Bahar said. Ines Azevedo, an associate professor in the Department of Energy Science and Engineering at Stanford University, said government subsidies in countries such as the United States have also boosted early growth in renewable energy, as have policies that commit to renewable energy deployment. said he did. US states set standards for how much of their electricity demand should be met by renewable energy by a given year.
However, the current rate of renewable energy adoption is still well below the rate needed to meet climate change goals. Global renewable energy capacity increased by 9.6% last year, but IRENA says capacity needs to grow three times as fast to meet Paris’ climate goals. And electricity demand will only increase as other sectors such as manufacturing and transportation decarbonise.
However, there are obstacles to accelerating the rate of renewable energy deployment. For one, solar and wind are intermittent power sources. That means we need to deploy batteries and other types of energy storage. This can increase costs. Solar cells and today’s dominant storage technology, lithium-ion batteries, also require important (and sometimes relatively scarce) minerals to produce them. Demand for these resources could outstrip supply, creating future production bottlenecks, he says.
Another stumbling block was, “We’re not starting from scratch. We’ve spent a lot of money on this massive existing infrastructure. 41% of planned energy investments to 2050 will still be in fossil fuels, according to IRENA analysts.
Strong government policies to reduce emissions are essential to boost renewable energy adoption, Azevedo said. Market forces alone cannot do this. ”
Funding is also an issue. While the overall cost of renewable energy is falling, “everything needs to be invested upfront,” says Bahar. “So funding costs and risk management are very important.”
Financing is particularly problematic for the equitable deployment of renewable energy. The US, Europe, India and China account for 80% of new renewable energy capacity. Also, “85% of investments in renewable energy benefit only his 50% of the world’s population,” said the director of IRENA’s Center for Innovation and Technology, mainly the world’s largest economy. Deputy Roland Roesch said. He argued that multinational development banks (the main source of funding for projects in developing countries) must help developing countries adopt renewable projects because of the initial costs and political instability. It adds that it can do so by addressing any additional risks that may arise. in some places. “At the end of net zero he has the hardest mile,” he says Bahar. “So we have to include everyone.”
*Editor’s Note (April 21, 2023): This sentence was edited after posting to clarify Inés Azevedo’s primary affiliation at Stanford University.
