{"id":8855,"date":"2026-03-17T14:29:37","date_gmt":"2026-03-17T14:29:37","guid":{"rendered":"https:\/\/nationalinfrastructurecommission.wales\/?page_id=8855"},"modified":"2026-03-17T14:29:39","modified_gmt":"2026-03-17T14:29:39","slug":"ymchwilcyflenwi26","status":"publish","type":"page","link":"https:\/\/nationalinfrastructurecommission.wales\/cy\/ymchwilcyflenwi26\/","title":{"rendered":"Ymchwil Cyflenwi Seilwaith Cymru 2026"},"content":{"rendered":"\n<div class=\"wp-block-cover alignfull is-light\"><img decoding=\"async\" class=\"wp-block-cover__image-background wp-image-8848 size-full\" alt=\"\" src=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/aitoff-bridge-6261229.jpg\" data-object-fit=\"cover\"\/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\" style=\"background-color:#7e756e\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group alignwide is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\">Ymchwil Cyflenwi Seilwaith Cymru 2026<\/h2>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">Mae Comisiwn Seilwaith Cenedlaethol Cymru (NICW) wedi bod yn archwilio pam mae prosiectau seilwaith mawr yng Nghymru mor aml yn cael trafferth symud ymlaen, er gwaethaf uchelgais genedlaethol gref. Gan dynnu ar ymgysylltiad ledled y wlad, mae ein hymchwil yn tynnu sylw at record gymysg o gyflawni dros y ddau ddegawd diwethaf, lle mae rhai cynlluniau proffil uchel wedi stopio, gan adael cymunedau gyda chyfleoedd coll a buddion cymdeithasol ac economaidd heb eu gwireddu.<br><br>Trwy ymchwil a gomisiynwyd, mae NICW wedi dadansoddi enghreifftiau o brosiectau llwyddiannus ac aflwyddiannus ar draws eu cylch bywyd llawn: o feichiogi a chynllunio hyd at ariannu, cyflawni a chwblhau. Mae&#8217;r gwaith hwn yn canolbwyntio ar ffactorau systemig ailadroddus sy&#8217;n siapio canlyniadau, gan gynnwys economeg a chyllid, sgiliau a gallu&#8217;r sector, gyrwyr gwleidyddol, ymgysylltu \u00e2&#8217;r cyhoedd a rhanddeiliaid, a&#8217;r systemau cynllunio statudol a thrwyddedu amgylcheddol.<br><br>Drwy goladu tystiolaeth ansoddol a meintiol, astudiaethau achos, a mewnwelediadau rhanddeiliaid, ein nod yw adeiladu darlun cliriach o&#8217;r achosion sylfaenol y tu \u00f4l i heriau cyflawni yng Nghymru. Bydd y canfyddiadau yn helpu i nodi&#8217;r amodau sy&#8217;n galluogi cyflawni yn llwyddiannus, cefnogi gwneud penderfyniadau gwell, a chryfhau&#8217;r system seilwaith ar gyfer cenedlaethau&#8217;r dyfodol.<br><br>Cliciwch ar y blwch isod i lawrlwytho pdf o ganfyddiadau&#8217;r adroddiad.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-20959078 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/Findings-Presentation-Welsh-language.pdf\">Lawrlwytho Ymchwil Cyflenwi Seilwaith NICW pdf<\/a><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Llun gan\u00a0<a href=\"https:\/\/pixabay.com\/users\/aitoff-388338\/?utm_source=link-attribution&amp;utm_medium=referral&amp;utm_campaign=image&amp;utm_content=6261229\">Andrew Martin<\/a>\u00a0o\u00a0<a href=\"https:\/\/pixabay.com\/\/?utm_source=link-attribution&amp;utm_medium=referral&amp;utm_campaign=image&amp;utm_content=6261229\">Pixabay<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Ymchwil Cyflenwi Seilwaith Cymru 2026 Mae Comisiwn Seilwaith Cenedlaethol Cymru (NICW) wedi bod yn archwilio pam mae prosiectau seilwaith mawr yng Nghymru mor aml yn cael trafferth symud ymlaen, er gwaethaf uchelgais genedlaethol gref. Gan dynnu ar ymgysylltiad ledled y wlad, mae ein hymchwil yn tynnu sylw at record gymysg o gyflawni dros y ddau [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":3014,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_crdt_document":"","inline_featured_image":false,"footnotes":""},"class_list":["post-8855","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/pages\/8855","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/comments?post=8855"}],"version-history":[{"count":3,"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/pages\/8855\/revisions"}],"predecessor-version":[{"id":8862,"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/pages\/8855\/revisions\/8862"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/media\/3014"}],"wp:attachment":[{"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/media?parent=8855"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}