In the past decade, renewable energies have advanced leaps and bounds and dramatically dropped in price. Wind and solar have become scalable, tradable as commodities, and have even outgrown their government subsidies as they become increasingly competitive with fossil fuels. Renewables are ready to take center stage in the urgent fight against climate change and have shown themselves to be capable of displacing fossil fuels. But there are still some major hurdles in the path towards a completely renewable world, and the biggest of those is energy storage. Renewable energies like wind and solar power are variable — meaning that the amount of energy output fluctuates over time. As these forms of energy production are dependent on the weather and whether the sun is shining, it stands to reason that their flow of energy to the grid is marked by peaks and valleys. What’s more, renewable energy output is […]