The integration of additional renewables into the existing energy system is the main barrier to their large-scale deployment.
Investments in renewable energy have exceeded $1 trillion over the past three years. Solar and wind, along with hydro and geothermal systems, are providing low-cost alternatives to fossil fuel-based energy.
With the rapid fall in the cost of energy storage, the prospect of transitioning grids to full reliance on renewable energy is now closer than ever. Governments from the United Kingdom to New York State have pledged a net-zero carbon economy by 2050, an unthinkable goal just a few years ago