{"id":9598,"date":"2026-05-28T17:02:02","date_gmt":"2026-05-28T16:02:02","guid":{"rendered":"https:\/\/nationalinfrastructurecommission.wales\/?page_id=9598"},"modified":"2026-05-28T17:02:04","modified_gmt":"2026-05-28T16:02:04","slug":"cylchlythr-2026-gwanwyn","status":"publish","type":"page","link":"https:\/\/nationalinfrastructurecommission.wales\/cy\/cylchlythr-2026-gwanwyn\/","title":{"rendered":"Cylchlythr 2026 Gwanwyn"},"content":{"rendered":"\n<div class=\"wp-block-group alignfull is-layout-constrained wp-container-core-group-is-layout-0ee90f18 wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\">Cylchlythr CSCC &#8211; Gwanwyn 2026<\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-group has-tertiary-background-color has-background is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">Cyfarfodydd &amp; digwyddiadau<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ym mis Mawrth, fe wnaethon ni lansio dau o\u2019n hadroddiadau mewn sesiwn lawn a bywiog yng Nghaerdydd. Roedd un adroddiad yn <a href=\"https:\/\/nationalinfrastructurecommission.wales\/cy\/asesiadseilwaithcymru26\/\">giplun o\u2019r pum sector seilwaith<\/a>, gyda rhai syniadau ar sut y gallem wella canlyniadau ym mhob sector. <a href=\"https:\/\/nationalinfrastructurecommission.wales\/cy\/ymchwilcyflenwi26\/\">Asesodd yr ail adroddiad sut roedd prosiectau seilwaith mawr yng Nghymru wedi perfformio<\/a> &#8211; ac unrhyw wersi a ddysgwyd ohonynt.<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">Gohebiaeth<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Gallwch weld ein holl ohebiaeth <a href=\"https:\/\/nationalinfrastructurecommission.wales\/cy\/publications\/#gohebiaeth\">yma<\/a>. Ysgrifennon ni sawl gwaith at Bwyllgor CCEI y Senedd ddiwethaf, yn ogystal ag at Lywodraeth Cymru a sawl Gweinidog.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-tertiary-background-color has-background is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\">Yn dod<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dros y misoedd nesaf, cadwch lygad allan am:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Postiadau blog yn arddangos ein meddyliau ar amrywiaeth o bynciau \ud83d\udc40<\/li>\n\n\n\n<li>Ein Cadeirydd yn camu i lawr ddiwedd mis Gorffennaf \ud83e\ude91\u2b07\ufe0f<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-background-background-color has-background is-layout-constrained wp-container-core-group-is-layout-a1727f98 wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">Postiau<\/h3>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile is-image-fill-element\"><figure class=\"wp-block-media-text__media\"><a href=\"https:\/\/nationalinfrastructurecommission.wales\/cy\/2026\/03\/23\/seilwaith-ar-gyfer-cenedlaethaur-dyfodol\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/sidongyou-pier-1334683-1024x683.jpg\" alt=\"\" class=\"wp-image-8882 size-full\" style=\"object-position:50% 50%\" srcset=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/sidongyou-pier-1334683-1024x683.jpg 1024w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/sidongyou-pier-1334683-300x200.jpg 300w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/sidongyou-pier-1334683-768x512.jpg 768w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/sidongyou-pier-1334683-1536x1024.jpg 1536w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/sidongyou-pier-1334683-2048x1365.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><div class=\"wp-block-media-text__content\">\n<h2 id=\"introducing-the-essays\" class=\"wp-block-heading has-large-font-size\">Seilwaith ar gyfer Cenedlaethau&#8217;r Dyfodol<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Post yn tynnu sylw at ein cyhoeddiadau ar seilwaith yng Nghymru<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex 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\/cy\/2026\/03\/23\/seilwaith-ar-gyfer-cenedlaethaur-dyfodol\/\">Darllen mwy<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile is-image-fill-element\"><figure class=\"wp-block-media-text__media\"><a href=\"https:\/\/nationalinfrastructurecommission.wales\/cy\/2026\/05\/11\/seilwaith-cymru-2026\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"577\" src=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/04\/20260323_094042-1024x577.jpg\" alt=\"\" class=\"wp-image-9292 size-full\" style=\"object-position:50% 50%\" srcset=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/04\/20260323_094042-1024x577.jpg 1024w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/04\/20260323_094042-300x169.jpg 300w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/04\/20260323_094042-768x432.jpg 768w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/04\/20260323_094042-1536x865.jpg 1536w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/04\/20260323_094042-2048x1153.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><div class=\"wp-block-media-text__content\">\n<h2 id=\"introducing-the-essays\" class=\"wp-block-heading has-large-font-size\">Infrastructure Cymru 2026<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Uchafbwyntiau o&#8217;n prif gynhadledd yn 2026<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex 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\/cy\/2026\/05\/11\/seilwaith-cymru-2026\/\">Darllen mwy<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile is-image-fill-element\"><figure class=\"wp-block-media-text__media\"><a href=\"https:\/\/nationalinfrastructurecommission.wales\/cy\/2026\/05\/18\/dwrcymru\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"374\" src=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/06\/20252177-lake-6484029_1280-1024x374.jpg\" alt=\"\" class=\"wp-image-9458 size-full\" style=\"object-position:50% 50%\" srcset=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/06\/20252177-lake-6484029_1280-1024x374.jpg 1024w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/06\/20252177-lake-6484029_1280-766x280.jpg 766w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/06\/20252177-lake-6484029_1280-300x110.jpg 300w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/06\/20252177-lake-6484029_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><div class=\"wp-block-media-text__content\">\n<h2 id=\"introducing-the-essays\" class=\"wp-block-heading has-large-font-size\">Rheoleiddio d\u0175r yng Nghymru<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ai cyfle unwaith mewn cenhedlaeth yw hwn mewn gwirionedd?<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex 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\/cy\/2026\/05\/18\/dwrcymru\/\">Darllen mwy<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile is-image-fill-element\"><figure class=\"wp-block-media-text__media\"><a href=\"https:\/\/nationalinfrastructurecommission.wales\/cy\/2026\/05\/20\/adeiladauseronet\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"524\" src=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/05\/ulleo-solar-system-2939560_1280-1024x524.jpg\" alt=\"\" class=\"wp-image-9466 size-full\" style=\"object-position:50% 50%\" srcset=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/05\/ulleo-solar-system-2939560_1280-1024x524.jpg 1024w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/05\/ulleo-solar-system-2939560_1280-300x153.jpg 300w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/05\/ulleo-solar-system-2939560_1280-768x393.jpg 768w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/05\/ulleo-solar-system-2939560_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><div class=\"wp-block-media-text__content\">\n<h2 id=\"introducing-the-essays\" class=\"wp-block-heading has-large-font-size\">Beth yw cost polisi da?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Arferai Cymru arwain ar effeithlonrwydd ynni. Nawr\u2026? Nid cymaint. Ac mae wedi costio i ni.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex 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\/cy\/2026\/05\/20\/adeiladauseronet\/\">Darllen mwy<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile is-image-fill-element\"><figure class=\"wp-block-media-text__media\"><a href=\"https:\/\/nationalinfrastructurecommission.wales\/cy\/2026\/05\/21\/llywodraethnewydd\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"733\" src=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/05\/tidy-cardiff-175316_1280-1024x733.jpg\" alt=\"\" class=\"wp-image-9509 size-full\" style=\"object-position:50% 50%\" srcset=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/05\/tidy-cardiff-175316_1280-1024x733.jpg 1024w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/05\/tidy-cardiff-175316_1280-300x215.jpg 300w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/05\/tidy-cardiff-175316_1280-767x549.jpg 767w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/05\/tidy-cardiff-175316_1280.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><div class=\"wp-block-media-text__content\">\n<h2 id=\"introducing-the-essays\" class=\"wp-block-heading has-large-font-size\">Llywodraeth Newydd; cyfleoedd newydd<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Darganfyddwch sut mae ein polis\u00efau&#8217;n cyd-fynd \u00e2&#8217;r llywodraeth newydd.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex 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\/cy\/2026\/05\/21\/llywodraethnewydd\/\">Read more<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-tertiary-background-color has-background is-layout-constrained wp-container-core-group-is-layout-a1727f98 wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">Adroddiadau<\/h3>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile is-image-fill-element\"><figure class=\"wp-block-media-text__media\"><a href=\"https:\/\/nationalinfrastructurecommission.wales\/cy\/ymchwilcyflenwi26\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"304\" src=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/aitoff-bridge-6261229-1024x304.jpg\" alt=\"\" class=\"wp-image-8848 size-full\" style=\"object-position:50% 50%\" srcset=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/aitoff-bridge-6261229-1024x304.jpg 1024w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/aitoff-bridge-6261229-300x89.jpg 300w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/aitoff-bridge-6261229-768x228.jpg 768w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/aitoff-bridge-6261229-1536x456.jpg 1536w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/aitoff-bridge-6261229-2048x607.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><div class=\"wp-block-media-text__content\">\n<h2 id=\"introducing-the-essays\" class=\"wp-block-heading has-large-font-size\">Ymchwil i Gyflenwi Seilwaith<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pam mae prosiectau seilwaith yng Nghymru i bob golwg yn cael cymaint o drafferth? Dyma pam, a rhai meddyliau am sut y gallwn wella.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex 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\/cy\/ymchwilcyflenwi26\/\">Darllen mwy<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile is-image-fill-element\"><figure class=\"wp-block-media-text__media\"><a href=\"https:\/\/nationalinfrastructurecommission.wales\/cy\/asesiadseilwaithcymru26\/\"><img loading=\"lazy\" decoding=\"async\" width=\"771\" height=\"764\" src=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/IALOGO.png\" alt=\"\" class=\"wp-image-8612 size-full\" style=\"object-position:50% 50%\" srcset=\"https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/IALOGO.png 771w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/IALOGO-300x297.png 300w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/IALOGO-150x150.png 150w, https:\/\/nationalinfrastructurecommission.wales\/wp-content\/uploads\/2026\/03\/IALOGO-768x761.png 768w\" sizes=\"auto, (max-width: 771px) 100vw, 771px\" \/><\/a><\/figure><div class=\"wp-block-media-text__content\">\n<h2 id=\"introducing-the-essays\" class=\"wp-block-heading has-large-font-size\">Asesiad Seilwaith Cymru<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cipluniau o&#8217;r pum sector seilwaith yng Nghymru.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex 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\/cy\/asesiadseilwaithcymru26\/\">Darllen mwy<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div style=\"height:11px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n\n<p><!-- \/wp:post-content --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><!-- \/wp:paragraph --><\/p>","protected":false},"excerpt":{"rendered":"<p>Cylchlythr CSCC &#8211; Gwanwyn 2026 Cyfarfodydd &amp; digwyddiadau Gohebiaeth Gallwch weld ein holl ohebiaeth yma. Ysgrifennon ni sawl gwaith at Bwyllgor CCEI y Senedd ddiwethaf, yn ogystal ag at Lywodraeth Cymru a sawl Gweinidog. Yn dod Dros y misoedd nesaf, cadwch lygad allan am: Postiau Seilwaith ar gyfer Cenedlaethau&#8217;r Dyfodol Post yn tynnu sylw at [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8476,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"wp-custom-template-long-document","meta":{"inline_featured_image":false,"footnotes":""},"class_list":["post-9598","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/pages\/9598","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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/comments?post=9598"}],"version-history":[{"count":3,"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/pages\/9598\/revisions"}],"predecessor-version":[{"id":9602,"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/pages\/9598\/revisions\/9602"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/media\/8476"}],"wp:attachment":[{"href":"https:\/\/nationalinfrastructurecommission.wales\/cy\/wp-json\/wp\/v2\/media?parent=9598"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}