# Generator servicing regulations UK (3 figures)

> The UK Standby Generator Obligations carries 3 published figures read from 3 sources' own pages, from 50 to 50 hour, read 24 October 2026.

Generator Servicing Cost · https://generatorservicingcost.co.uk/datasets/uk-standby-generator-obligations/ · computed 2026-10-25

**Range of the published figures:** 50 to 50 hour (range 50 to 50 hour; 3 published figures; 4 of 12 sources read publish one).

4 of the 12 named sources read in full publish a figure; 8 publish none, read 24 October 2026.

## By nation

| Breakdown | Median | Range | Sources |
|---|---|---|---|
| nation Scotland | 4 month | 4 to 4 month | 1 |
| nation Scotland | 4 year | 4 to 4 year | 1 |

## Every figure, with its source

One row per source: the figure the source's own page publishes, the page, and the day it was read.

| Source | Figure | Breakdown | Read |
|---|---|---|---|
| [GOV.UK medium combustion plant: comply with emission limit values](https://www.gov.uk/guidance/medium-combustion-plant-mcp-comply-with-emission-limit-values) | 50 hour |  | 2026-10-24 |
| [GOV.UK specified generator: apply for an environmental permit](https://www.gov.uk/guidance/specified-generator-apply-for-an-environmental-permit) | 50 hour |  | 2026-10-24 |
| [The Environmental Permitting (England and Wales) (Amendment) Regulations 2018](https://www.legislation.gov.uk/uksi/2018/110/made) | 50 hour |  | 2026-10-24 |
| [SEPA medium combustion plant guidance](https://beta.sepa.scot/regulation/authorisations-and-compliance/easr-authorisations/industrial-activities/energy-industries/combustion-of-fuels/medium-combustion-plant/medium-combustion-plant-guidance/) | 5 year | Scotland | 2026-10-24 |
| [SEPA medium combustion plant guidance](https://beta.sepa.scot/regulation/authorisations-and-compliance/easr-authorisations/industrial-activities/energy-industries/combustion-of-fuels/medium-combustion-plant/medium-combustion-plant-guidance/) | 4 month | Scotland | 2026-10-24 |
| [SEPA medium combustion plant guidance](https://beta.sepa.scot/regulation/authorisations-and-compliance/easr-authorisations/industrial-activities/energy-industries/combustion-of-fuels/medium-combustion-plant/medium-combustion-plant-guidance/) | 3 year | Scotland | 2026-10-24 |

## The sentence each figure was read from (6)

- [GOV.UK medium combustion plant: comply with emission limit values](https://www.gov.uk/guidance/medium-combustion-plant-mcp-comply-with-emission-limit-values), read 2026-10-24: "diesel back-up generator MCPs and specified generators that are operated for less than 50 hours per year for testing, without a specified ELV"
- [GOV.UK specified generator: apply for an environmental permit](https://www.gov.uk/guidance/specified-generator-apply-for-an-environmental-permit), read 2026-10-24: "You can also use this low risk method to do monitoring for diesel back-up specified generators which operate for less than 50 hours per year for testing, even though there is no specified ELV."
- [The Environmental Permitting (England and Wales) (Amendment) Regulations 2018](https://www.legislation.gov.uk/uksi/2018/110/made), read 2026-10-24: "back-up generators operated for the purpose of testing for no more than 50 hours per year,"
- [SEPA medium combustion plant guidance](https://beta.sepa.scot/regulation/authorisations-and-compliance/easr-authorisations/industrial-activities/energy-industries/combustion-of-fuels/medium-combustion-plant/medium-combustion-plant-guidance/), read 2026-10-24: "A reduced frequency is allowed for plant operating under the limited hours exemption, but monitoring (for carbon monoxide only) will be required no less than once every five years."
- [SEPA medium combustion plant guidance](https://beta.sepa.scot/regulation/authorisations-and-compliance/easr-authorisations/industrial-activities/energy-industries/combustion-of-fuels/medium-combustion-plant/medium-combustion-plant-guidance/), read 2026-10-24: "The operator must carry out monitoring of emissions to demonstrate compliance with the ELVs within four months of a permit being granted, and then at the following frequency:"
- [SEPA medium combustion plant guidance](https://beta.sepa.scot/regulation/authorisations-and-compliance/easr-authorisations/industrial-activities/energy-industries/combustion-of-fuels/medium-combustion-plant/medium-combustion-plant-guidance/), read 2026-10-24: "Equal to or greater than 1MW - less than or equal to 20MW must report every three years."

## Read in full, publishes no figure

- [GOV.UK medium combustion plant and specified generators: environmental permits](https://www.gov.uk/guidance/medium-combustion-plant-and-specified-generators-environmental-permits), read 2026-10-03: read in full and no accepted figure on the page
- [GOV.UK environmental permitting charges guidance](https://www.gov.uk/government/publications/environmental-permitting-charges-guidance/environmental-permitting-charges-guidance), read 2026-09-12: every candidate on the page was refused
- [GOV.UK environmental permits and abstraction licences: tables of charges](https://www.gov.uk/government/publications/environmental-permits-and-abstraction-licences-tables-of-charges), read 2026-10-09: read in full and no accepted figure on the page
- [The Control of Pollution (Oil Storage) (England) Regulations 2001](https://www.legislation.gov.uk/uksi/2001/2954/made), read 2026-09-12: every candidate on the page was refused
- [Natural Resources Wales charges for MCP and specified generator permit applications](https://www.naturalresourceswales.gov.uk/permits-and-permissions/medium-combustion-plants-and-specified-generators/charges-for-medium-combustion-plant-and-specified-generator-permit-applications?lang=en), read 2026-09-12: every candidate on the page was refused
- [NetRegs (SEPA and NIEA) boilers and furnaces: environmental authorisations or permits](https://www.netregs.org.uk/environmental-topics/air-pollution/preventing-air-pollution/boilers-and-furnaces-environmental-authorisations-or-permits/), read 2026-10-17: read in full and no accepted figure on the page
- [HSE Provision and Use of Work Equipment Regulations (PUWER)](https://www.hse.gov.uk/work-equipment-machinery/puwer.htm), read 2026-09-11: read in full and no accepted figure on the page
- [NHS England Health Technical Memorandum 06-01: electrical services supply and distribution](https://www.england.nhs.uk/publication/electrical-services-supply-and-distribution-htm-06-01/), read 2026-09-12: read in full and no accepted figure on the page

## Methodology

Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2). 4 of the 12 named sources that could be read published a usable figure; 8 published none and are recorded as not published, never filled in; 0 could not be read (blocked, dead or unreachable) and count nowhere. The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source in hour (a source's median where its page yielded several accepted sentences), so N counts sources, never sentences; 55 candidate sentence(s) were refused by a reviewer with the reason recorded. The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): one row per nation per obligation - permit threshold in MWth and running hours, emission limit values, application and subsistence charge, fuel storage containment rule, testing and inspection duty - quoted verbatim from that nation's own authority with its effective date; the cross-nation comparison is the figure (Scotland does not apply the specified generator permit at all, while England, Wales and Northern Ireland do, on three different timetables), and changed-since, which is the news when a compliance deadline lands

## Sources

- [GOV.UK medium combustion plant and specified generators: environmental permits](https://www.gov.uk/guidance/medium-combustion-plant-and-specified-generators-environmental-permits) (the publisher's own terms; quoted for reporting and comment)
- [GOV.UK medium combustion plant: comply with emission limit values](https://www.gov.uk/guidance/medium-combustion-plant-mcp-comply-with-emission-limit-values) (the publisher's own terms; quoted for reporting and comment)
- [GOV.UK specified generator: apply for an environmental permit](https://www.gov.uk/guidance/specified-generator-apply-for-an-environmental-permit) (the publisher's own terms; quoted for reporting and comment)
- [GOV.UK environmental permitting charges guidance](https://www.gov.uk/government/publications/environmental-permitting-charges-guidance/environmental-permitting-charges-guidance) (the publisher's own terms; quoted for reporting and comment)
- [GOV.UK environmental permits and abstraction licences: tables of charges](https://www.gov.uk/government/publications/environmental-permits-and-abstraction-licences-tables-of-charges) (the publisher's own terms; quoted for reporting and comment)
- [The Control of Pollution (Oil Storage) (England) Regulations 2001](https://www.legislation.gov.uk/uksi/2001/2954/made) (the publisher's own terms; quoted for reporting and comment)
- [The Environmental Permitting (England and Wales) (Amendment) Regulations 2018](https://www.legislation.gov.uk/uksi/2018/110/made) (the publisher's own terms; quoted for reporting and comment)
- [SEPA medium combustion plant guidance](https://beta.sepa.scot/regulation/authorisations-and-compliance/easr-authorisations/industrial-activities/energy-industries/combustion-of-fuels/medium-combustion-plant/medium-combustion-plant-guidance/) (the publisher's own terms; quoted for reporting and comment)
- [Natural Resources Wales charges for MCP and specified generator permit applications](https://www.naturalresourceswales.gov.uk/permits-and-permissions/medium-combustion-plants-and-specified-generators/charges-for-medium-combustion-plant-and-specified-generator-permit-applications?lang=en) (the publisher's own terms; quoted for reporting and comment)
- [NetRegs (SEPA and NIEA) boilers and furnaces: environmental authorisations or permits](https://www.netregs.org.uk/environmental-topics/air-pollution/preventing-air-pollution/boilers-and-furnaces-environmental-authorisations-or-permits/) (the publisher's own terms; quoted for reporting and comment)
- [HSE Provision and Use of Work Equipment Regulations (PUWER)](https://www.hse.gov.uk/work-equipment-machinery/puwer.htm) (the publisher's own terms; quoted for reporting and comment)
- [NHS England Health Technical Memorandum 06-01: electrical services supply and distribution](https://www.england.nhs.uk/publication/electrical-services-supply-and-distribution-htm-06-01/) (the publisher's own terms; quoted for reporting and comment)

## Cite or embed

- The UK Standby Generator Obligations carries 3 published figures read from 3 sources' own pages, from 50 to 50 hour, read 24 October 2026.
- 4 of the 12 named sources read in full publish a figure; 8 publish none, read 24 October 2026.
- UK Standby Generator Obligations, nation Scotland: median 4 month across 1 source, read 24 October 2026.
- UK Standby Generator Obligations, nation Scotland: median 4 year across 1 source, read 24 October 2026.

Cite as: "generatorservicingcost.co.uk UK Standby Generator Obligations", updated 2026-10-25, https://generatorservicingcost.co.uk/datasets/uk-standby-generator-obligations/.

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