Understanding planning · 13 min read
Planning application documents: what to read first
Understand planning application documents, officer reports and decision notices. Use a reading checklist, document table and worked example to inspect a case.
Application overview
Hydroelectric generating scheme (44Kw) to include intake weir, buried penstock, turbine building, outflow and buried electric grid connection
Proposal details
- Reference
- NP4/32/358A
- Ward
- Betws-y-Coed and Trefriw ED
- Parish
- Trefriw
- Agent
- Mr. Gruff Wyn
- UPRN
- APNVFA8R5HB5XH20AV
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Sign in to view collected detailsDocuments 20 of 20
| Document | Published | Action |
|---|---|---|
| FF | 27 May 2025 | View |
| E1 | 27 May 2025 | View |
| E2 | 27 May 2025 | View |
| E3 | 27 May 2025 | View |
| C1 | 27 May 2025 | View |
| LL, CS | 27 May 2025 | View |
| LL | 27 May 2025 | View |
| C2 | 27 May 2025 | View |
| AE | 27 May 2025 | View |
| E4 | 27 May 2025 | View |
| E5 | 27 May 2025 | View |
| S - CNC / NRW 16.06.25 | 16 Jun 2025 | View |
| S - Priffyrdd Conwy / Conwy Highways 16.06.25 | 16 Jun 2025 | View |
| S - D"{r Cymru / Welsh Water 16.06.25 | 18 Jun 2025 | View |
| Cyngor Cymuned / Community Council 18.06.25 | 18 Jun 2025 | View |
| S - Heneb 26.06.25 | 27 Jun 2025 | View |
| S - Priffyrdd Conwy / Conwy Highways 31.07.25 | 1 Aug 2025 | View |
| Biodiversity_Enhancement_Plan_Nant_Llyn_Glan_Gors.pdf | 7 Oct 2025 | View |
| Powerhouse_Dimensions_and_GA_v4.0.pdf | 7 Oct 2025 | View |
| RhP | 22 Oct 2025 | View |
Documents open on the council website. Browse council documents if a link has changed.
Application timeline
Council milestones and published deadlines. A deadline passing does not confirm a decision.
Consultation expiry date
Past published deadlineA published target or deadline. It does not confirm an outcome.
Council sourceStatutory expiry date
Past published deadlineA published target or deadline. It does not confirm an outcome.
Council sourceDecision due date
Past published deadlineA published target or deadline. It does not confirm an outcome.
Council sourceDecision expiry date
Published deadlineA published target or deadline. It does not confirm an outcome.
Council source
Decision & conditions
Planning conditions
- The development hereby permitted shall be commenced before the expiration of FIVE years from the date of this decision.
- Rhaid dechrau'r datblygiad a ganiateir yma cyn pen PUM mlynedd o ddyddiad y penderfyniad hwn.
- The development hereby permitted shall be carried out in accordance with the following approved plans: • Location Plan and site plan • GA v2.0: Intake dimensions and general arrangement • GA v4.0: Powerhouse Dimensions • Traffic movements during construction phase • Biodiversity Enhancement Plan • Construction Method Statement, Environmental Management Plan and Restoration Plan, (Hydro.Cymru, October 2024) • Preliminary Ecological Assessment, Cambrian Ecology Ltd., 05 September 2024 • Tree Survey, Wye Valley Tree Services, 21 August 2024
- Mae'n rhaid cyflawni'r datblygiad a ganiateir yma yn unol â'r cynlluniau a gymeradwywyd isod: • Location Plan and site plan • GA v2.0: Intake dimensions and general arrangement • GA v4.0: Powerhouse Dimensions • Traffic movements during construction phase • Biodiversity Enhancement Plan • Construction Method Statement, Environmental Management Plan and Restoration Plan, (Hydro.Cymru, Hydref 2024) • Preliminary Ecological Assessment, Cambrian Ecology Ltd., 05 Medi 2024 • Tree Survey, Wye Valley Tree Services, 21 Awst 2024
- No development shall take place until such time as a qualified Ecological Clerk of Works shall be appointed to oversee the entirety of the development. The appointed Ecological Clerk of Works shall:- i) oversee the works on the site as it proceeds and shall advise on the means to mitigate or reduce harms that may be encountered as a result of the on-going construction process including the route and formation of the access track for its full length from the power house to the intake. ii) oversee the implementation of the approved Construction Method Statement (CMS) & Environmental Management Plan and the Restoration Plan. Schedule of reporting.
- Ni fydd unrhyw ddatblygiad yn digwydd hyd nes y bydd Clerc Gwaith Ecolegol cymwys yn cael ei benodi i oruchwylio cyfanrwydd y datblygiad. Bydd y Clerc Gwaith Ecolegol a benodir yn:- i) goruchwylio'r gwaith ar y safle wrth iddo fynd yn ei flaen a bydd yn cynghori ar y dull lliniaru neu leihau'r niwed a all godi o ganlyniad i'r broses adeiladu barhaus, gan gynnwys ffurfio'r llwybr a'r trac mynediad ar gyfer ei lawn hyd o'r t"} p"{er i'r cymeriant. ii) yn goruchwylio y Datganiad Dull Adeiladu a gymeradwywyd (DDA) & Cynllun Rheoli Amgylcheddol a'r Cynllun Adfer. Rhestr o adrodd.
- No development (including site clearance, topsoil strip or other ground works) pursuant to this permission shall take place until the applicant/developer has submitted to and received written approval from the Local Planning Authority for a written scheme of investigation for archaeological work which must meet all relevant archaeological standards. The development shall thereafter be carried out in strict accordance with the archaeological specification for a programme of works as approved by this condition
- Ni fydd unrhyw ddatblygiad (gan gynnwys clirio safle, stribed pridd uchaf neu waith tir arall) yn unol â'r caniatâd hwn yn digwydd nes bod yr ymgeisydd/datblygwr wedi cyflwyno i'r Awdurdod Cynllunio Lleol a derbyn cymeradwyaeth ysgrifenedig ganddo ar gyfer cynllun ymchwilio ysgrifenedig ar gyfer gwaith archaeolegol y mae'n rhaid iddo fodloni'r holl safonau archaeolegol perthnasol. Wedi hynny, rhaid cynnal y datblygiad yn unol yn llwyr â'r fanyleb archaeolegol ar gyfer rhaglen o waith fel y'i cymeradwywyd gan yr amod hwn
- The applicant/developer shall produce a detailed analytical report on the archaeological work required by Condition 4 above within 6 months of completion of archaeological fieldwork, which shall subsequently be submitted formally to and approved in writing by the Local Planning Authority by means of a formal application
- Rhaid i'r ymgeisydd/datblygwr gynhyrchu adroddiad dadansoddol manwl ar y gwaith archaeolegol sy'n ofynnol gan Amod 4 uchod o fewn 6 mis i gwblhau'r gwaith maes archaeolegol, a rhaid ei gyflwyno'n ffurfiol wedyn i'r Awdurdod Cynllunio Lleol a'i gymeradwyo'n ysgrifenedig ganddo drwy gais ffurfiol
- This permission inures for a period of 60 years from the date hereof, or until the turbine ceases to operate for a continuous period of not less than 12 months, whichever is sooner. Within 3 months from that time, the weirs, turbine house and all other structures on or above the ground shall be dismantled, the materials removed from the site and the site restored to the satisfaction of the Local Planning Authority unless the Local Planning Authority gives consent for any variation
- Mae'r caniatâd hwn yn ddilys am gyfnod o 60 mlynedd o'r dyddiad hwn, neu hyd nes y bydd y tyrbin yn peidio â gweithredu am gyfnod parhaus o ddim llai na 12 mis, pa un bynnag sydd gyntaf. O fewn 3 mis o'r amser hwnnw, rhaid datgymalu'r morgloddiau, t"}'r tyrbin a phob strwythur arall ar neu uwchben y ddaear, symud y deunyddiau o'r safle a hadfer y safle i foddhad yr Awdurdod Cynllunio Lleol oni bai bod yr Awdurdod Cynllunio Lleol yn rhoi caniatâd i unrhyw amrywiad
- Demolition or construction works shall not take place outside the hours of 08:00 to 18:00 Mondays to Fridays and 08:00 to 13:00 on Saturdays and at no time on Sundays or Public Holidays
- Ni fydd gwaith dymchwel nac adeiladu yn digwydd y tu allan i'r oriau 08:00 tan 18:00 o ddydd Llun i ddydd Gwener a 08:00 tan 13:00 ar ddydd Sadwrn nac ar unrhyw adeg ar y Sul nac ar Wyliau Cyhoeddus
- The turbine building hereby permitted shall be so constructed as to provide sound attenuation against internally generated noise to a standard that causes no reasonable loss of amenity to the residents of nearby properties.
- Bydd adeilad y tyrbin a ganiateir drwy hyn yn cael ei adeiladu er mwyn darparu trefn gwanhau s"{n gadarn rhag y s"{n a gynhyrchir yn fewnol a hynny hyd safon fel nad yw'n achosi unrhyw golled resymol o amwynder i drigolion eiddo cyfagos.
- Should any complaints with regard to overall noise levels and to tonal noise components that emanate from the power house be received the applicant/developer shall arrange for a suitably qualified acoustic consultant to be agreed in writing by the Local Planning Authority prior to undertaking a full overall noise and tonal assessment of the noise generated by the development.
- Os daw unrhyw gwynion i law mewn perthynas â’r lefelau s"{n cyffredinol a’r elfennau s"{n tonyddol sy’n dod o'r pwerdy, mae’n rhaid i'r ymgeisydd / datblygwr drefnu i ymgynghorydd acwstig sy’n meddu ar gymwysterau priodol gael ei gytuno’n ysgrifenedig gan yr Awdurdod Cynllunio Lleol cyn ymgymryd ag asesiad s"{n a thonyddol cyffredinol llawn o’r s"{n a gynhyrchir gan y datblygiad.
- The abstraction and impounding of water in connection with this hydroelectric scheme hereby approved shall be made in complete accordance with a ‘Full Licence to Abstract’ and a ‘Full Licence to Impound’ as may be approved by Natural Resources Wales
- Rhaid i dynnu a chronni d"{r mewn cysylltiad â'r cynllun trydan d"{r hwn a gymeradwyir drwy hyn gael ei wneud yn gwbl unol â 'Thrwydded Lawn i Dynnu' a 'Thrwydded Lawn i Gronni' fel y'u cymeradwyir gan Cyfoeth Naturiol Cymru
- Any exposed concrete to the weir abutments shall be finished and faced in natural stone to the entire satisfaction of the Local Planning Authority
- Rhaid gorffen a wynebu unrhyw goncrit agored i ategion y morglawdd â charreg naturiol i foddhad llwyr yr Awdurdod Cynllunio Lleol
- Prior to any stonework commencing on the site, a trial stonework panel including pointing not less than 2.00 m² shall be constructed. No building operations in stone shall be carried out on the site unless and until the trial panel has been inspected and approved by means of a formal application to the Local Planning Authority. The stonework of the dwellinghouse/ building / extension shall be built in accordance with the approved sample.
- Cyn i unrhyw waith cerrig ddechrau ar y safle, mae'n rhaid adeiladu panel o waith cerrig o nid llai na 2m sgwâr a'i bwyntio. Nid oes unrhyw waith adeiladu mewn cerrig i'w gyflawni ar y safle oni bai a hyd nes bod yr Awdurdod Cynllunio Lleol wedi archwilio a chymeradwyo'r panel drwy gais ffurfiol. Mae'n rhaid adeiladu gwaith cerrig yr estyniad yn unol â'r panel a gymeradwywyd.
- The Public Right of Way: Trefriw C32_42 shall be protected during and after this development
- Rhaid diogelu'r Hawl Tramwy Cyhoeddus: Trefriw C32_42 yn ystod ac ar ôl y datblygiad hwn
- The applicant/developer shall ensure that the mitigation recommended in the bat survey report by Cambrian Ecology Ltd., 05 September 2024 are followed and implemented in full.
- Rhaid i'r ymgeisydd / datblygwr sicrhau bod y mesurau lliniaru a argymhellir yn adroddiad yr arolwg ystlumod gan Cambrian Ecology Ltd., 05 Medi 2024 yn cael eu dilyn a’u rhoi ar waith yn llawn.
- Prior to any work being carried out on the site, a scheme to prevent the spread of Invasive Non-Native Species (INNS), namely Montbretia and Himalayan balsam within the development corridor shall be formally submitted to and approved by means of a formal application to the Local Planning Authority
- Cyn gwneud unrhyw waith ar y safle, rhaid cyflwyno cynllun i atal lledaeniad Rhywogaethau Estron Ymledol (INNS), sef Montbretia a Jac y Ffromlys o fewn y coridor datblygu yn ffurfiol i'r Awdurdod Cynllunio Lleol a'i gymeradwyo drwy gais ffurfiol iddo
- To Comply with Section 91 (as amended) of the Town and Country Planning Act 1990.
- I gydymffurfio a Rhan 91 (fel y diwygiwyd) o'r Ddeddf Gynllunio Gwlad a Thref 1990.
- To define the permission and for the avoidance of doubt.
- Er mwyn diffinio’r caniatâd ac i osgoi amheuaeth.
- For the avoidance of doubt and in order to protect the biodiversity, the environment of the area and the visual impact on the wider landscape in accordance with Eryri Local Development Plan Policies 2016-2031 and in particular policies 1 and A
- Er mwyn osgoi unrhyw amheuaeth ac er mwyn gwarchod bioamrywiaeth, yr amgylchedd yr ardal a'r effaith weledol ar y dirwedd ehangach yn unol â Pholisïau Cynllun Datblygu Lleol Eryri 2016-2031 yn enwedig polisiau 1 ac A
- To ensure the implementation of an appropriate programme of archaeological mitigation in accordance with the requirements of Planning Policy Wales 2024 and TAN24: The Historic Environment
- Sicrhau bod rhaglen briodol o liniaru archaeolegol yn cael ei gweithredu yn unol â gofynion Polisi Cynllunio Cymru 2024 a TAN24: Yr Amgylchedd Hanesyddol
- To ensure that the work will comply with MORPHE/Management of Archaeological Projects (MAP2) and the Standards and Guidance of the Chartered Institute for Archaeologists (ClfA)
- Er mwyn sicrhau y bydd y gwaith yn cydymffurfio â MORPHE/Rheoli Prosiectau Archaeolegol (MAP2) a Safonau a Chanllawiau Sefydliad Siartredig yr Archaeolegwyr (ClfA)
- To safeguard the visual amenities of the area in accordance with Eryri Local Development Plan Policy 1
- Er mwyn diogelu amwynderau gweledol yr ardal yn unol â Pholisi 1 Cynllun Datblygu Lleol Eryri
- To minimise the loss of amenity to neighbouring properties and the surrounding area in general in accordance with Eryri Local Development Plan Policies 2016-2031 and in particular Policy 1.
- Er mwyn lleihau colli amwynder eiddo cyfagos a'r ardal gyfagos yn gyffredinol yn unol â Pholisïau Cynllun Datblygu Lleol Eryri 2016-2031 yn enwedig Polisi 1.
- To safeguard the visual amenities of the area and nearby residents in accordance with Eryri Local Development Plan 2016-2031 Policy 1.
- Er mwyn diogelu mwynderau gweledol yr ardal a thrigolion cyfagos yn unol â Chynllun Datblygu Lleol Eryri 2016-2031 Polisi 1.
- To safeguard the visual amenities of the area and nearby residents in accordance with Eryri Local Development Plan 2016-2031 Policy 1.
- Er mwyn diogelu mwynderau gweledol yr ardal a thrigolion cyfagos yn unol â Chynllun Datblygu Lleol Eryri 2016-2031 Polisi 1.
- To ensure a satisfactory standard of appearance of the development and the use of appropriate local building materials, in accordance with Eryri Local Development Plan Policies and in particular policies A, 1 & 6
- Er mwyn sicrhau safon foddhaol o ran ymddangosiad y datblygiad a defnyddio deunyddiau adeiladu lleol priodol, yn unol â Pholisïau Cynllun Datblygu Lleol Eryri ac yn benodol polisïau A, 1 a 6
- To ensure a satisfactory standard of appearance of the development and the use of appropriate local building materials, in accordance with Eryri Local Development Plan Policies and in particular policies A, 1 & 6
- Er mwyn sicrhau safon foddhaol o ran ymddangosiad y datblygiad a defnyddio deunyddiau adeiladu lleol priodol, yn unol â Pholisïau Cynllun Datblygu Lleol Eryri ac yn benodol polisïau A, 1 & 6
- To safeguard the visual amenities of the area in accordance with Eryri Local Development Plan 2016-2031 policy 1.
- Er mwyn diogelu amwynderau gweledol yr ardal yn unol â pholisi 1 o Gynllun Datblygu Lleol Eryri 2016-2031.
- To ensure no detriment to the free and safe access along a public right of way
- Er mwyn sicrhau nad oes unrhyw niwed i'r mynediad rhydd a diogel ar hyd hawl tramwy gyhoeddus
- To ensure a satisfactory standard of development and to minimise the risk of unacceptable harm or disturbance to protected species in accordance with Eryri Local Development Plan Policies 2016-2031 and in particular Policy D.
- Er mwyn sicrhau safon foddhaol y datblygiad a lleihau'r risg o niwed neu ymyrraeth annerbyniol i rywogaethau a warchodir yn unol â Pholisïau Cynllun Datblygu Lleol Eryri 2016-2031 ac yn enwedig Polisi D.
- To prevent the spread of invasive non-native species
- Er mwyn atal lledaeniad rhywogaethau estron ymledol
