The White House is offering subsidies to charging stations that use Tesla connectors, as long as they also include Combined Charging Standard (CCS) connectors, Reuters reported Friday.

The report follows an announcement by General Motors this week, and Ford a couple of weeks earlier, that they would adopt the Tesla connector, which Tesla recently rebranded as the North American Charging Standard (NACS) for future EVs. Both automakers have favored CCS up to this point.

The federal government said earlier this year that Tesla will need to open its network to other EVs in order to be eligible for a piece of the $7.5 billion set aside in the Biden administration’s infrastructure law, which aims to create a national network of 500,000 chargers. States have control of $5 billion of that funding, spread over five years, but it must be approved by the federal government.

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The White House did not say whether CCS adapters were enough for Tesla to prove interoperability, and that wasn’t addressed in the statement reported by Reuters. Green Car Reports has reached out to the Joint Office that oversees implementation of the program.

In a letter to the Federal Highway Administration last year, Tesla argued its Supercharger stations should qualify for federal funding if they were co-located with CCS stations, which would allow the automaker to avoid installing CCS connectors on its own chargers.

The federal government is also in the midst of tackling charger reliability in the infrastructure buildout—including requirements for data on uptime and reliability. It’s another box Tesla will have to check to receive federal funding for its charging stations—funding other networks relying on the CCS connector had hoped to take advantage of.

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After the defections of Ford and GM, federal funding for Tesla charging stations would be another blow to CCS. It also puts hardware manufacturers in the position of having to decide which format to support. Some have already announced plans to offer NACS compatibility.

“Ultimately, the increased adoption of the NACS standard relates both to its widespread use by EV drivers and the reliability of stations that currently offer NACS,” Nathan Yang, chief product officer of FLO, said in a statement, adding that “FLO is an industry leader in reliability, offering a 98%+ uptime.”

ABB North America released a statement on Twitter Friday saying it would offer NACS connectors as an option on its products.