{ "schema_version": "1.4", "last_updated": "2026-09-02", "source": "https://balconysolarhub.co.uk/developers/", "license": { "name": "CC BY 4.0", "url": "https://creativecommons.org/licenses/by/4.0/", "attribution": "BalconySolarHub (balconysolarhub.co.uk)" }, "parent_dataset": "https://balconysolarhub.co.uk/data/uk-plug-in-solar.json", "coverage": { "geography": "Great Britain (England, Wales, Scotland)", "northern_ireland": { "in_scope": false, "note": "Northern Ireland is deliberately out of scope for the DNO section. It does not appear in the Energy Networks Association distribution licence area table, and regulation 3 of SI 2026/848 does not extend to Northern Ireland. Regulations 1 and 2 of that instrument do." } }, "count": 6, "licence_area_count": 14, "headline_finding": "The 28-day notification deadline is not set by individual network operators. It is a national requirement in EREC G98 section 1.1, made under regulation 22(2)(c) of the Electricity Safety, Quality and Continuity Regulations 2002 and the Health and Safety Executive's certificate of exemption of August 2008. EREC G98 places the duty to notify on the installer. SI 2026/848, which makes plug-in solar lawful from 27 August 2026, does not mention EREC G98, DNO notification, or any connection procedure. UK Power Networks, the largest operator by licence area, states on both its installer portal and its consumer guidance that only installers can notify it on behalf of customers. Five of the six operators are consistent with the national 28 days; SP Energy Networks publishes 30 days for its commissioning confirmation form and separately asks for notice before or at commissioning. This is a factual record of what each source states, not legal advice.", "headline_finding_note": "This field reports what primary sources say. It deliberately draws no conclusion about what a householder installing a plug-in device without an installer is required to do; see national_rule.applies_to_diy_householder, which is null.", "is_legal_advice": false, "deadline_uniformity": "uniform at 28 days nationally, with SP Energy Networks publishing 30 days for its commissioning confirmation form", "route_open_to_householder_summary": { "false": [ "UKPN" ], "true": [], "null": [ "NGED", "SPEN", "NPg", "ENWL", "SSEN" ], "note": "false is recorded only where the operator states it on its own pages. Everything else is null because the operator does not address the question." }, "national_rule": { "deadline_days": 28, "inclusive_of_commissioning_day": true, "quote": "the Installer is required to ensure that the DNO is made aware of the Micro-generator installation before the time of commissioning or no later than 28 days (inclusive of the day of commissioning) after commissioning", "source_document": "ENA Engineering Recommendation G98, section 1.1 (restated at 8.3.1)", "source_url": "https://www.energynetworks.org/assets/images/Publications/2024/240522%20erec-g98-557469.pdf", "legal_basis": "Electricity Safety, Quality and Continuity Regulations 2002 Regulation 22(2)(c), and the Certificate of Exemption granted by the Health and Safety Executive in August 2008", "is_legal_requirement": true, "duty_holder": "the installer", "duty_holder_quote": "Your installer must notify the DNO within 28 days of commissioning the generating unit, and provide them with information on the installation. This is a legal requirement.", "duty_holder_source": "ENA Distributed Generation Connection Guide: G98 for Single Premises", "duty_holder_source_url": "https://www.energynetworks.org/assets/images/Resource%20library/G98%20Single%20Premises.pdf", "form": "G98 Form B, the Installation Document at Appendix 3 of EREC G98", "applies_to_diy_householder": null, "applies_to_diy_householder_note": "EREC G98 places the duty on the installer, and still does. No primary source consulted stated what a householder who installs a plug-in device without an installer must do until the Energy Networks Association published a registration portal at https://myplugin.solar/ , read 2026-09-02, whose FAQ states that registering the device there sends the notification to the DNO, and that registration is a legal requirement. That claim is the portal's own; its Terms of Use cite 'the regulations relating to these devices' without naming them. This field stays null because EREC G98 itself is unchanged: it names the installer, not the householder.", "not_referenced_by_si_2026_848": true, "not_referenced_by_si_2026_848_note": "The full text of SI 2026/848 was read on 2026-08-01. It amends product safety requirements and does not mention EREC G98, DNO notification, or any connection procedure. The notification framework is separate from the legalisation.", "last_verified": "2026-08-01" }, "mpan_lookup": { "10": "uk-power-networks", "12": "uk-power-networks", "19": "uk-power-networks", "11": "national-grid-electricity-distribution", "14": "national-grid-electricity-distribution", "21": "national-grid-electricity-distribution", "22": "national-grid-electricity-distribution", "13": "sp-energy-networks", "18": "sp-energy-networks", "15": "northern-powergrid", "23": "northern-powergrid", "16": "electricity-north-west", "17": "scottish-and-southern-electricity-networks", "20": "scottish-and-southern-electricity-networks" }, "dnos": [ { "dno_name": "UK Power Networks", "dno_short": "UKPN", "slug": "uk-power-networks", "url": "https://balconysolarhub.co.uk/data/dno/uk-power-networks.json", "licence_areas": [ 10, 12, 19 ], "regions_covered": [ "Eastern England", "London", "South Eastern England" ], "notification_deadline_days": 28, "notification_deadline_source": "stated on the operator's own page", "route_open_to_householder": false }, { "dno_name": "National Grid Electricity Distribution", "dno_short": "NGED", "slug": "national-grid-electricity-distribution", "url": "https://balconysolarhub.co.uk/data/dno/national-grid-electricity-distribution.json", "licence_areas": [ 11, 14, 21, 22 ], "regions_covered": [ "East Midlands", "West Midlands", "Southern Wales", "South Western England" ], "notification_deadline_days": 28, "notification_deadline_source": "stated on the operator's own page", "route_open_to_householder": null }, { "dno_name": "SP Energy Networks", "dno_short": "SPEN", "slug": "sp-energy-networks", "url": "https://balconysolarhub.co.uk/data/dno/sp-energy-networks.json", "licence_areas": [ 13, 18 ], "regions_covered": [ "Cheshire, Merseyside and Northern Wales", "Southern Scotland" ], "notification_deadline_days": 30, "notification_deadline_source": "stated on the operator's own page", "route_open_to_householder": null }, { "dno_name": "Northern Powergrid", "dno_short": "NPg", "slug": "northern-powergrid", "url": "https://balconysolarhub.co.uk/data/dno/northern-powergrid.json", "licence_areas": [ 15, 23 ], "regions_covered": [ "North Eastern England", "Yorkshire" ], "notification_deadline_days": 28, "notification_deadline_source": "stated on the operator's own page", "route_open_to_householder": null }, { "dno_name": "Electricity North West", "dno_short": "ENWL", "slug": "electricity-north-west", "url": "https://balconysolarhub.co.uk/data/dno/electricity-north-west.json", "licence_areas": [ 16 ], "regions_covered": [ "North Western England" ], "notification_deadline_days": 28, "notification_deadline_source": "stated on the operator's own page", "route_open_to_householder": null }, { "dno_name": "Scottish and Southern Electricity Networks", "dno_short": "SSEN", "slug": "scottish-and-southern-electricity-networks", "url": "https://balconysolarhub.co.uk/data/dno/scottish-and-southern-electricity-networks.json", "licence_areas": [ 17, 20 ], "regions_covered": [ "Northern Scotland", "Southern England" ], "notification_deadline_days": 28, "notification_deadline_source": "stated on the operator's own page", "route_open_to_householder": null } ] }