{
  "api": "assay-systems/v1",
  "key_tier": "none",
  "retrieved": "2026-10-18T01:04:08Z",
  "source": "Assay Systems register, https://assay-systems.com/register/",
  "access_notice": "On 15 November 2026, automated access to assay-systems.com closes. After that date, access is available only under a paid annual subscription contract. Contact: contact@assay-systems.com",
  "data": {
    "id": "ASY-DE-0JQKI5B1U8",
    "type": "page",
    "country": "de",
    "name": "Mainzer Netze GmbH: contracts awarded without a rival",
    "url": "https://assay-systems.com/register/de/uncontested/b/mainzer-netze-gmbh/",
    "figures": [
      {
        "label": "uncontested awards",
        "value": 11,
        "unit": "count"
      },
      {
        "label": "of its awards",
        "value": 38,
        "unit": "percent",
        "display": "38%"
      },
      {
        "label": "suppliers",
        "value": 10,
        "unit": "count"
      },
      {
        "label": "single bid",
        "value": 10,
        "unit": "count"
      }
    ],
    "text": [
      "Mainzer Netze GmbH made 11 of its 29 public contract awards without a rival from 2023-11-03 to 2026-03-04: 1 without a competition and 10 after a competition that drew a single bid, to 10 suppliers; the most to SIEMENS ENERGY Global GmbH & Co KG, 2."
    ],
    "tables": [
      [
        {},
        {
          "Date": "2026-03-04",
          "Supplier": "SIEMENS ENERGY Global GmbH & Co KG 149771-2026",
          "Supplier link": "https://assay-systems.com/register/de/uncontested/s/siemens-energy-global-gmbh-co-kg/",
          "How": "Single bid neg-w-call",
          "Stated reason": "—"
        },
        {
          "Date": "2026-02-27",
          "Supplier": "SIEMENS ENERGY Global GmbH & Co KG 139449-2026",
          "Supplier link": "https://assay-systems.com/register/de/uncontested/s/siemens-energy-global-gmbh-co-kg/",
          "How": "Single bid neg-w-call",
          "Stated reason": "—"
        },
        {
          "Date": "2026-01-21",
          "Supplier": "Sonn Elektrotechnik 43085-2026",
          "Supplier link": "https://assay-systems.com/register/de/uncontested/s/sonn-elektrotechnik/",
          "How": "Single bid neg-w-call",
          "Stated reason": "—"
        },
        {
          "Date": "2025-11-24",
          "Supplier": "PFIFFNER Instrument Transformers Ltd 776903-2025",
          "Supplier link": "https://assay-systems.com/register/de/uncontested/s/pfiffner-instrument-transformers-ltd/",
          "How": "Single bid neg-w-call",
          "Stated reason": "—"
        },
        {
          "Date": "2025-08-19",
          "Supplier": "EQOS Energie Deutschland GmbH 538307-2025",
          "Supplier link": "https://assay-systems.com/register/de/uncontested/s/eqos-energie-deutschland-gmbh/",
          "How": "Single bid neg-w-call",
          "Stated reason": "—"
        },
        {
          "Date": "2025-06-10",
          "Supplier": "Ingenieurbüro Mielke GmbH 370882-2025",
          "Supplier link": "https://assay-systems.com/register/de/uncontested/s/ingenieurburo-mielke-gmbh/",
          "How": "No competition neg-wo-call",
          "Stated reason": "irregular"
        }
      ]
    ],
    "records": [
      {
        "name": "all of Germany",
        "url": "https://assay-systems.com/register/de/uncontested/"
      },
      {
        "name": "SIEMENS ENERGY Global GmbH & Co KG",
        "url": "https://assay-systems.com/register/de/uncontested/s/siemens-energy-global-gmbh-co-kg/"
      },
      {
        "name": "SIEMENS ENERGY Global GmbH & Co KG in the register",
        "url": "https://assay-systems.com/register/de/siemens-energy-global-gmbh-co-kg/"
      },
      {
        "name": "EQOS Energie Deutschland GmbH",
        "url": "https://assay-systems.com/register/de/uncontested/s/eqos-energie-deutschland-gmbh/"
      },
      {
        "name": "EQOS Energie Deutschland GmbH in the register",
        "url": "https://assay-systems.com/register/de/eqos-energie-deutschland-gmbh/"
      },
      {
        "name": "Bieske und Partner GmbH",
        "url": "https://assay-systems.com/register/de/uncontested/s/bieske-und-partner-gmbh/"
      },
      {
        "name": "Bieske und Partner GmbH in the register",
        "url": "https://assay-systems.com/register/de/bieske-und-partner-gmbh/"
      },
      {
        "name": "G&B Kabelservice GmbH",
        "url": "https://assay-systems.com/register/de/uncontested/s/g-amp-b-kabelservice-gmbh/"
      },
      {
        "name": "G&B Kabelservice GmbH in the register",
        "url": "https://assay-systems.com/register/de/g-amp-b-kabelservice-gmbh/"
      },
      {
        "name": "G&B Kabelservice GmbH",
        "url": "https://assay-systems.com/register/de/uncontested/s/g-b-kabelservice-gmbh/"
      },
      {
        "name": "G&B Kabelservice GmbH in the register",
        "url": "https://assay-systems.com/register/de/g-b-kabelservice-gmbh/"
      },
      {
        "name": "Ingenieurbüro Mielke GmbH",
        "url": "https://assay-systems.com/register/de/uncontested/s/ingenieurburo-mielke-gmbh/"
      },
      {
        "name": "Ingenieurbüro Mielke GmbH in the register",
        "url": "https://assay-systems.com/register/de/ingenieurburo-mielke-gmbh/"
      },
      {
        "name": "PFIFFNER Instrument Transformers Ltd",
        "url": "https://assay-systems.com/register/de/uncontested/s/pfiffner-instrument-transformers-ltd/"
      },
      {
        "name": "PFIFFNER Instrument Transformers Ltd in the register",
        "url": "https://assay-systems.com/register/de/pfiffner-instrument-transformers-ltd/"
      },
      {
        "name": "Sonn Elektrotechnik",
        "url": "https://assay-systems.com/register/de/uncontested/s/sonn-elektrotechnik/"
      },
      {
        "name": "Sonn Elektrotechnik in the register",
        "url": "https://assay-systems.com/register/de/sonn-elektrotechnik/"
      },
      {
        "name": "S&V Bau GmbH",
        "url": "https://assay-systems.com/register/de/uncontested/s/s-v-bau-gmbh/"
      },
      {
        "name": "S&V Bau GmbH in the register",
        "url": "https://assay-systems.com/register/de/s-v-bau-gmbh/"
      },
      {
        "name": "Trench Austria GmbH",
        "url": "https://assay-systems.com/register/de/uncontested/s/trench-austria-gmbh/"
      },
      {
        "name": "Trench Austria GmbH in the register",
        "url": "https://assay-systems.com/register/de/trench-austria-gmbh/"
      },
      {
        "name": "All countries",
        "url": "https://assay-systems.com/register/uncontested/"
      }
    ],
    "assay_record": "ASY-DE-0JQKI5B1U8",
    "cite_as": "Assay Systems, \"Mainzer Netze GmbH: contracts awarded without a rival\", https://assay-systems.com/register/de/uncontested/b/mainzer-netze-gmbh/"
  }
}