Pa fath o ardystiad sydd ei angen ar gontractwyr i wneud gwaith o dan gynlluniau rhwymedigaeth cwmnïau ynni (ECO4)?
Wedi'i ateb gan Ysgrifennydd y Cabinet dros Lywodraeth Leol a Thai
| Wedi'i ateb ar 19/11/2024
The Energy Company Obligation (ECO) scheme is a UK Government energy efficiency scheme designed to tackle fuel poverty and help reduce carbon emissions. Welsh Government does not have a role in its administration.