Florida has lagged in renewable energy use, but declining solar costs are set to change that
Not everything will be rosy with more solar, Hale and other experts point out, because its fast-paced growth will give Florida a problem with the “duck curve.” That refers to supply and demand curves that show there will be so much solar available at midday that the price will drop to near zero, discouraging additional supplies and requiring conventional electric power sources to ramp up in the morning and early evening when solar is not plentiful. Both California and Hawaii have wrestled with the problem.
But the NREL study notes that the improving efficiency of large storage batteries could help reduce Florida’s duck curve and spread the availability of solar power around the clock. The NREL study experimented with scenarios where substantial amounts of solar power—as much as the equivalent power output of four large nuclear power plants—were stored at sites around the state.
“We do find there is value there,” Hale said.
“You are going to see batteries become better. You’re going to see more and more storage being done at utility substations and at some generating stations,” predicted Sean Gallagher, vice president of state affairs for the Solar Energy Industries Association (SEIA), which represents installers and solar panel manufacturers. “More storage provides a lot of resiliency both for the grid as a whole and for special circumstances which Florida has with hurricanes.”
Gallagher complained that the state’s two major private utilities are hurrying to build their own solar farms without inviting bids from outside contractors, including SEIA members.
“We know our members can provide solar to utilities at lower costs than that,” he said. “Florida has a lot of opportunities for solar companies, and we’d like to help crack it open.”
Asked to comment, Peveeta Persaud, a spokeswoman for Duke Energy, said her company intends to build solar farms producing 700 megawatts across the state between now and 2022 and is “negotiating” with solar companies to see who can provide the “lowest-cost, most flexible solar generation” to Duke customers.
Florida Power & Light, the state’s other large electric power producer, did not respond to a request by E&E News for a comment on Gallagher’s statement. The company has told state regulators that it plans to build 4,000 MW of solar over the next decade. Both utilities have bigger plans to construct more gas-fired power generation in the state.
Florida also has a number of smaller, municipally owned utilities interested in more solar power. Orlando’s City Council recently voted unanimously to shift entirely to renewable energy by 2050. Gainesville and Tallahassee are also interested, Hale said. NREL is working with six municipal utilities and the Energy Department’s Lawrence Berkeley National Laboratory to explore how battery storage and pricing options that encourage more electricity use during peak solar demand periods can help reduce expected duck curve problems.
The League of Women Voters is leading a coalition of nonprofits to push more Florida cities and co-ops toward renewable energy. On the other hand, Florida’s Legislature has been heavily influenced by lobbyists from investor-owned utilities that made over $3 million in political contributions to legislators in the 2016 election cycle, according to a recent study by the Center for Public Integrity.
According to the D.C.-based group, Florida’s new, more muscular political approach toward cheaper, more renewable energy may take awhile to register with voters. While Florida ranks with Texas and California in having the resources for achieving solar power’s full potential, it will take the Sunshine State more time to get there, the study noted.