Plug-in Solar News

Legal since August. One question still open.

Board as of
13 September 2026

In force

Plug-in solar permitted in Great Britain

SI 2026/848 amends the Plugs and Sockets Regulations and the ESQCR. Maximum rated AC output 800 watts.

Since 27 August 2026
Open question

Northern Ireland position

G98 covers Great Britain only. DESNZ has said applying the product specification in Northern Ireland is subject to further consideration.

No date set
Ends 2027

Planning transitional period

Either the permitted development rules as they stood before 27 August 2026, or the new ones, may be followed.

Until 27 August 2027
What this site does not do

We do not predict what regulators will do next, and we do not report a rumour as news. Every entry here is dated from a document that exists and that we have read. Where something is expected but has not happened, it is marked upcoming and left there.

How it happened, in ten documents

From a code modification proposal in April to everything commencing on a single day in August. The compression at the end is the interesting part.

  1. ENA raises the G98 changedone

    The Energy Networks Association raises Distribution Code modification DCRP/MP/26/02, seeking to amend Engineering Recommendation G98 to allow plug-in solar to connect.

  2. BS 7671 Amendment 4 publisheddone

    The IET and BSI publish Amendment 4 (2026) to BS 7671:2018. It may be implemented immediately; the previous version is withdrawn six months later.

  3. Interim Product Specification, Version 1.0done

    DESNZ publishes the first Plug-in Solar Device Interim Product Specification. It is later withdrawn and superseded, and copies still circulate stamped Withdrawn.

  4. Consultation opensdone

    DESNZ consults on amendments to the Plugs and Sockets Regulations and on the Interim Product Specification. It runs for two weeks.

  5. Consultation closesdone

    Respondents raise batteries, leaseholder and landlord consent, older wiring, and how the standards would apply in Northern Ireland.

  6. Government response and Version 2.0done

    DESNZ publishes its response and the Interim Product Specification Version 2.0. The exclusion of batteries is retained despite objections that it reduces payback.

See the full timeline, including what is still to come

Latest

Reporting on what the documents actually say, including the parts the market has not caught up with.

Three things commenced on the same day

The instrument came into force, the G98 amendment took effect, and the permitted development right for solar equipment changed. The third of those has had almost no coverage, and it is the one that decides whether a given home can proceed.

Read what changed

The rules exclude timber balconies

The updated permitted development right prohibits plug-in solar fixed to wooden walls, balconies and timber cladding. Every retailer in the country calls the product balcony solar.

Read the detail

Batteries stayed out, and the response says why

Respondents argued that excluding batteries reduced consumer payback. The exclusion was kept. Plug-in battery systems and solar integrated with batteries remain outside the approved class.

Read the detail

Northern Ireland is still unanswered

G98 applies to Great Britain only, the ESQCR amendment does not extend to Northern Ireland, and the department has said applying the specification there needs further consideration.

Read the tracker entry

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