Ond daw â chyfleoedd anferth - biliau tanwydd is, ansawdd aer gwell, cartrefi mwy cyfforddus, iechyd gwell, swyddi newydd a sgiliau. Mae angen inni fod yn uchelgeisiol a chreadigol i weld y newid sydd ei angen.
But with this challenge also comes enormous opportunities - lower fuel bills, improved air quality, more comfortable homes, better health, new jobs and skills. We have to be ambitious and creative if we’re going to achieve the change we need.