Enphase IQ8s have grid-forming capabilities since they came out in 2021 [1], and they're one of the major vendors. Same with the SolarEdge EnergyHub since 2020 [2], the other major U.S. vendor. Globally, Sungrow [3] and Huawei [4] both support grid-forming in their inverters, and their sales dwarf the U.S. manufacturers.
If you relax condition a), it's an even larger percentage. I've got IQ7a's and a PowerWall (installed 2020) and they transparently switch over to battery whenever there's an outage and switch back. I just looked at my Tesla backup history and there've been 5 power outages in the last year, and I haven't noticed any of them.
Enphase IQ8s have grid-forming capabilities since they came out in 2021 [1], and they're one of the major vendors. Same with the SolarEdge EnergyHub since 2020 [2], the other major U.S. vendor. Globally, Sungrow [3] and Huawei [4] both support grid-forming in their inverters, and their sales dwarf the U.S. manufacturers.
If you relax condition a), it's an even larger percentage. I've got IQ7a's and a PowerWall (installed 2020) and they transparently switch over to battery whenever there's an outage and switch back. I just looked at my Tesla backup history and there've been 5 power outages in the last year, and I haven't noticed any of them.
[1] https://newsroom.enphase.com/news-releases/news-release-deta...
[2] https://www.solaredge.com/fr/SolarEdge-enhances-solar-plus-s...
[3] https://en.sungrowpower.com/upload/file/20211201/Grid%20Form...
[4] https://solar.huawei.com/en/news-room/en/2023/news-20230523