Fronius makes solar inverters and works in welding technology and battery charging. Its US Primo datasheet says the company began in 1945 as a one-man operation and lists Fronius USA LLC in Portage, Indiana; its GEN24 datasheet lists Fronius International GmbH in Wels, Austria.
Product / system scope unresolved. Listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) as Fronius International GmbH "Primo GEN24 3.8 208-240 {240V}": UL 1741 SA, certifying entity CSA Group, CEC listing date 2021-11-12. A state equipment list entry, not the certification body's own record.
Product / system scope unresolved. Listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) as Fronius International GmbH "Primo GEN24 3.8 208-240 {240V}": UL 1741 SB, certifying entity CSA Group, certificate date 2025-04-09, CEC listing date 2021-11-12. A state equipment list entry, not the certification body's own record.
Product / system scope unresolved. Model Primo GEN24 3.8 208-240 listed on the California Energy Commission Grid Support Battery Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) under Fronius International GmbH, as "Primo GEN24 3.8 208-240 {208V}"; "Primo GEN24 3.8 208-240 {240V}", CEC listing date 2021-11-12. This is an equipment listing, not UL certification or complete-system approval.
Product / system scope unresolved. Model Primo GEN24 3.8 208-240 listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) under Fronius International GmbH, as "Primo GEN24 3.8 208-240 {208V}"; "Primo GEN24 3.8 208-240 {240V}", CEC listing date 2021-11-12. This is an equipment listing, not UL certification or complete-system approval.
Product / system scope unresolved. Listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) as Fronius International GmbH "Primo GEN24 5.0 208-240 {208V}": UL 1741 SA, certifying entity CSA Group, CEC listing date 2021-11-12. A state equipment list entry, not the certification body's own record.
Product / system scope unresolved. Listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) as Fronius International GmbH "Primo GEN24 5.0 208-240 {208V}": UL 1741 SB, certifying entity CSA Group, certificate date 2025-04-09, CEC listing date 2021-11-12. A state equipment list entry, not the certification body's own record.
Product / system scope unresolved. Model Primo GEN24 5.0 208-240 listed on the California Energy Commission Grid Support Battery Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) under Fronius International GmbH, as "Primo GEN24 5.0 208-240 {208V}"; "Primo GEN24 5.0 208-240 {240V}", CEC listing date 2021-11-12. This is an equipment listing, not UL certification or complete-system approval.
Product / system scope unresolved. Model Primo GEN24 5.0 208-240 listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) under Fronius International GmbH, as "Primo GEN24 5.0 208-240 {208V}"; "Primo GEN24 5.0 208-240 {240V}", CEC listing date 2021-11-12. This is an equipment listing, not UL certification or complete-system approval.
Product / system scope unresolved. Listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) as Fronius International GmbH "Primo GEN24 6.0 208-240 {208V}": UL 1741 SA, certifying entity CSA Group, CEC listing date 2021-11-12. A state equipment list entry, not the certification body's own record.
Product / system scope unresolved. Listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) as Fronius International GmbH "Primo GEN24 6.0 208-240 {208V}": UL 1741 SB, certifying entity CSA Group, certificate date 2025-04-09, CEC listing date 2021-11-12. A state equipment list entry, not the certification body's own record.
Product / system scope unresolved. Model Primo GEN24 6.0 208-240 listed on the California Energy Commission Grid Support Battery Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) under Fronius International GmbH, as "Primo GEN24 6.0 208-240 {208V}"; "Primo GEN24 6.0 208-240 {240V}", CEC listing date 2021-11-12. This is an equipment listing, not UL certification or complete-system approval.
Product / system scope unresolved. Model Primo GEN24 6.0 208-240 listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) under Fronius International GmbH, as "Primo GEN24 6.0 208-240 {208V}"; "Primo GEN24 6.0 208-240 {240V}", CEC listing date 2021-11-12. This is an equipment listing, not UL certification or complete-system approval.
Product / system scope unresolved. Listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) as Fronius International GmbH "Primo GEN24 7.7 208-240 {240V}": UL 1741 SA, certifying entity CSA Group, certificate date 2024-06-27, CEC listing date 2024-09-03. A state equipment list entry, not the certification body's own record.
Product / system scope unresolved. Listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) as Fronius International GmbH "Primo GEN24 7.7 208-240 {240V}": UL 1741 SB, certifying entity CSA Group, certificate date 2025-04-09, CEC listing date 2024-09-03. A state equipment list entry, not the certification body's own record.
Product / system scope unresolved. Model Primo GEN24 7.7 208-240 listed on the California Energy Commission Grid Support Battery Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) under Fronius International GmbH, as "Primo GEN24 7.7 208-240 {208V}"; "Primo GEN24 7.7 208-240 {240V}", CEC listing date 2024-09-03. This is an equipment listing, not UL certification or complete-system approval.
Product / system scope unresolved. Model Primo GEN24 7.7 208-240 listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) under Fronius International GmbH, as "Primo GEN24 7.7 208-240 {208V}"; "Primo GEN24 7.7 208-240 {240V}", CEC listing date 2024-09-03. This is an equipment listing, not UL certification or complete-system approval.
Product / system scope unresolved. Listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) as Fronius International GmbH "Primo GEN24 10.0 208-240 {208V}": UL 1741 SA, certifying entity CSA Group, certificate date 2024-06-27, CEC listing date 2024-09-03. A state equipment list entry, not the certification body's own record.
Product / system scope unresolved. Listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) as Fronius International GmbH "Primo GEN24 10.0 208-240 {208V}": UL 1741 SB, certifying entity CSA Group, certificate date 2025-04-09, CEC listing date 2024-09-03. A state equipment list entry, not the certification body's own record.
Product / system scope unresolved. Model Primo GEN24 10.0 208-240 listed on the California Energy Commission Grid Support Battery Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) under Fronius International GmbH, as "Primo GEN24 10.0 208-240 {208V}"; "Primo GEN24 10.0 208-240 {240V}", CEC listing date 2024-09-03. This is an equipment listing, not UL certification or complete-system approval.
Product / system scope unresolved. Model Primo GEN24 10.0 208-240 listed on the California Energy Commission Grid Support Solar Inverter List (data unchanged since October 1, 2026; downloaded October 11, 2026) under Fronius International GmbH, as "Primo GEN24 10.0 208-240 {208V}"; "Primo GEN24 10.0 208-240 {240V}", CEC listing date 2024-09-03. This is an equipment listing, not UL certification or complete-system approval.
Product / system scope unresolved. Model Fronius Symo 15.0-3 208 listed on the California Energy Commission Grid Support Inverter Lists (data unchanged since October 1, 2026; downloaded October 11, 2026) under Fronius International GmbH, as "Fronius Symo 15.0-3 208 {208V}", grid support listing date 2017-11-01. This is an equipment listing, not UL certification or complete-system approval.
Product / system scope unresolved. Listed on the California Energy Commission Grid Support Inverter Lists (data unchanged since October 1, 2026; downloaded October 11, 2026) as Fronius International GmbH "Fronius Symo 15.0-3 208 {208V}": UL 1741 SA, certifying entity CSA Group, certificate date 2017-09-27. A state equipment list entry, not the certification body's own record.
This manufacturer is listed as Fronius. Manufacturing entities, factories, cell origin and model-specific ownership relationships have not been audited.
Product certificates and company management certificates are tracked separately. No company management certificates have been reviewed for this manufacturer yet.
