On Tuesday, the U.S. Department of Energy announced it will invest $62 million to advance the state of concentrated solar power, at the apparent expense of solar photovoltaics that so far have roundly bested the rival renewable technology in the marketplace (see “One of the World’s Largest Solar Facilities Is in Trouble”).

The press release trumpeted that the solar sector has already achieved the stated 2020 goal of the department’s SunShot Initiative, namely lowering the price of power from utility-scale, photovoltaic plants to 6 cents per kilowatt-hour. It added that the DOE will continue research to decrease those costs, but stressed “new funding programs will focus on a broader scope of (Trump administration) priorities, which includes early-stage research to address solar energy’s critical challenges of grid reliability, resilience, and storage.”

Concentrated solar is at the top of the reshuffled list of research priorities, suggesting DOE officials think the technology can do more to improve grid stability over the long term. That’s because, while the energy it produces has been far more expensive than photovoltaics, it can store some of it in the form of heat. That means it can continue to generate electricity even when the sun isn’t shining, helping to balance supply-and-demand loads on the grid.

Given past behavior, the announcement raises at least some suspicions that the department, under Energy Secretary Rick Perry, may be seeking additional ways to diminish support for photovoltaics, potentially slowing progress behind the solar technology that’s done the most so far to threaten fossil fuels. After all, it follows the Trump Administration’s 2018 budget proposal to cut funding for the Office of Energy Efficiency and Renewable Energy, which oversees the SunShot program, by nearly 70 percent. (So far, Congress has pushed back on most of the proposed cuts to DOE research programs.)

But with that all said, energy researchers are quick to stress that the storage issue is a very real problem for photovoltaics—and a very real advantage for concentrated solar.