| Development | Transformer equipment in the proposed designAlpines Solarprojekt "Morgeten" | Equipment Supply | Proposed transformer equipment documented in 2024 |
| In Operation | Frequency converter modernisation contractorBard Offshore 1 | Equipment Supply | Bard Offshore 1 |
| In Operation | Wind turbine manufacturerEurus Akita Port | Turbine Supply | Six Siemens SWT-3.0-101 turbines, 18 MW total |
| In Operation | Electrical equipment documented in 2022F.V. Caucharí I | Equipment Supply | Electrical equipment at the shared Caucharí I–III complex documented in 2022 |
| Planned | SMart Wind joint venture partnerHornsea Project Four | Historical Development Context | Hornsea Zone original development consortium |
| Planned | SMart Wind joint venture development partnerHornsea Project One | Development | Hornsea Zone and Hornsea One development rights |
| Planned | SMart Wind joint venture partnerHornsea Project Three | Historical Development Context | Hornsea Zone original development consortium |
| In Construction | Joint venture investment sponsorLincs | Finance Insurance Legal | Lincs Wind Farm Limited joint venture |
| In Operation | Substation equipment manufacturerLlënga 1 | Substation Electrical | Llënga 1 |
| In Operation | Historical electrical-equipment and rehabilitation partnerMahipar Hydropower Plant | Historical Development Context | Historical generation-equipment and switchyard work |
| In Operation | Initial turbine service providerMeerwind Süd / Ost | Operations Maintenance | Five-year turbine service agreement for Meerwind Süd / Ost |
| In Construction | Turbine supplier, installer and commissioning contractorMeerwind Süd / Ost | Turbine Supply | 80 Siemens 3.6 MW turbines |
| In Construction | Switchgear and transformer supplierMiddelgrunden | Substation Electrical | Middelgrunden switchgear and transformer package |
| In Construction | Grid-forming inverter technologyNew England Battery | Equipment Supply | New England BESS inverter system |
| In Construction | Grid connection consortium contractorNordsee Ost | Substation Electrical | High-voltage direct-current grid connection for Nordsee Ost |
| In Construction | Offshore substation 220 kV GIS supplier and installerRace Bank | Substation Electrical | 220 kV GIS switchgear for two offshore substations |
| In Construction | Turbine supplierRiffgat | Turbine Supply | 30 Siemens 3.6 MW turbines |
| In Operation | Historical rehabilitation coordinationSurobi Hydropower Plant | Engineering Consulting And Project Management | Historical joint Sarobi and Mahipar rehabilitation programme |
| In Construction | Historical syndicated construction financingTemplers BESS | Legal And Finance | Construction financing documented in January 2025; current debt balances are not specified |
| Planned | Original equity investorVeja Mate | Finance Insurance Legal | Veja Mate financial close consortium |
| In Construction | Offshore auxiliary transformer supplierWest of Duddon Sands | Substation Electrical | Offshore auxiliary transformers |
| In Construction | Turnkey wind farm contractorWestermeerwind | Epc Balance Of Plant | Turnkey construction of the 48-turbine Westermeerwind nearshore wind farm |
| In Construction | Offshore GIS supplier and OFTO SCADA contractorWestermost Rough | Substation Electrical | 170 kV GIS switchgear and OFTO station control and protection system |
| Consented | Non Operating Owner · 10%Awel y Môr | Ownership | Siemens holds 10% of Awel y Môr through Siemens Financial Services. |
| In Operation | Non Operating Owner · 25%Galloper | Ownership | Siemens Financial Services owns 25% of Galloper Offshore Wind Farm. |
| In Operation | Non Operating Owner · 20%Gemini | Ownership | Gemini Wind Park states that Siemens, a listed German technology firm, owns 20 percent of the Gemini offshore wind park. |
| Consented | Owner | Onshore grid assets | Awel y Môr · Intermediate Connection Asset |
| In Operation | Owner | Onshore grid assets | Awel y Môr · Final Grid Connection Point |
| In Operation | Owner | Onshore grid assets | Gemini · Onshore Conversion |
| In Operation | Owner | Onshore grid assets | Gemini · Final Grid Connection Point |
| In Operation | OperatorKogali solar farm - 3 | Solar | Kogali solar farm |
| In Operation | OperatorPV Anlage Regensburg Maxhüttenstraße ERO 1 | Solar | PV Anlage Regensburg Maxhüttenstraße ERO 1 |