Experts say the U.S. energy transition is shifting focus toward the widespread deployment of batteries on the electric grid.

This transition is critical because batteries allow the grid to store power from renewable sources, making solar and wind energy reliable even when the sun is not shining or wind is not blowing. As energy prices rise, more Americans are seeking renewable alternatives that require stable storage solutions.

William Brangham, a PBS NewsHour moderator, discussed the timeline of this shift with environmental activist and author Bill McKibben. Brangham said that while the previous three to four years [1] were defined by the rise of solar and wind power, the next two to three years [2] will center on the deployment of batteries across the grid.

"If the last three or four years was about the rise of solar and wind power, the next two or three years are going to be about the deployment of batteries everywhere on that grid," Brangham said.

The movement toward energy storage is creating significant financial activity. Benoit Gervais, a portfolio manager at Mackenzie Investments, said the shift is creating broad and durable investment opportunities.

However, the industry faces a complex landscape of corporate strategy and technology. Some companies are prioritizing grid-scale storage, while others focus on vehicle performance. For example, Nissan is developing sideways-shifting batteries to improve electric vehicle performance rather than grid storage.

Corporate partnerships also fluctuate as companies refine their goals. In October 2024, LG Energy Solutions signed two contracts with Ford totaling $6.5 billion [3]. Despite such investments, Ford later ended a separate electric vehicle battery joint venture to shift its focus toward energy cells.

This volatility suggests that while the overall trend moves toward electrification, the specific technology and partnerships used to achieve that goal remain in flux.

The next two or three years are going to be about the deployment of batteries everywhere on that grid.

The transition from generating renewable energy to storing it represents a move toward a 'mature' green grid. While solar and wind provide the raw power, battery infrastructure solves the intermittency problem, potentially reducing reliance on fossil-fuel peaking plants during high-demand periods.