25 years ago the UK's first wind farm was switched on in the village of Delabole, Cornwall.
To celebrate such a big birthday it's only right to send a big card. So if you love wind, sign the birthday card wishing the Delabole wind farm many happy returns!
This is the message we'll be writing in the card, but feel free to add your own:
"Happy 25th birthday! Every time we see a wind turbine we feel a little glimmer of hope and we want to thank you for kicking it all off in the UK. Thank you for 25 years of clean power - here's to 25 more!"