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National Windmill Day

Drive out to windmill country, or read up about the history of windmills and how they can provide clean, sustainable energy by harnessing Earth’s natural power.

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Celebrate sustainable heritage and clean energy innovation by driving tourism to historic windmill sites and promoting renewable energy education during National Windmill Day.

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  • Plan your European windmill pilgrimage: bike tours through Holland's iconic mills on Molendag weekend
  • From ancient Heron of Alexandria to modern wind turbines: the 2,000-year journey of harnessing wind power
  • Visit 950+ windmills and watermills open to the public in the Netherlands—a living museum of sustainable engineering
  • Celebrate Don Quixote's famous windmill encounter by exploring real mills across Europe this May

History

The idea of capturing the power of the wind to perform work isn’t new and, in fact, it goes back far further into history than most people would suspect. Since then, its use has sprung up in multiple cultures throughout the world.

Heron of Alexandria, who lived in the first century AD, was the earliest person known to have harnessed the energy of moving air to perform work, using a very primitive device to power, of all things, a musical instrument: the organ. The people of Persia also developed more traditional windmills, though they had a different orientation than the ones most people typically think of when hearing the word ‘windmill’.

Some historians think that the Persian models were the inspiration for the vertical models that were developed later on in the middle ages. The evidence of one of the oldest windmills that remains today can be found in Weedley, Yorkshire, England and is said to have been built in 1185. As is commonly depicted in media, these machines were used primarily to grind grain, and have been for many centuries since that time.

Recently though, at least in the last 150 years or so, there’s been a growing movement to use windmills in another fashion entirely. The power of the wind can be harnessed to turn giant wind turbines which in turn generate clean, and virtually unlimited, renewable energy.

Windmills have been around for a long long time, and while they may seem like primitive tech, they’ve moved into the world as hope for a clean future. Along with solar, bio-fuel, and fuel cells, windmills are working to save the environment.


How to celebrate

Read Don Quixote

Famous (or perhaps, infamous) for his mistake in thinking that windmills are giant monsters, Don Quixote bravely rides toward them to do battle and, of course, eventually gets knocked off his horse. This is just one of the many beloved and memorable scenes in this classic novel by Spanish author, Miquel de Cervantes, published in 1606.

Visit Holland for National Windmill Day

While not necessarily the first place to house windmills, Holland (now known as The Netherlands) has a long history with them as they were the first place to use them to move water from low lying lands.In fact, the second Saturday and Sunday in May (because one day just isn’t enough!) are celebrated in Holland as “National Mill Day”, which is called Molendag in Dutch. This is a day when 950 windmills and watermills will open their doors to the public for visitors to see their inner workings first hand and learn more about them. Plus, many of them will also host fun events for the local community and tourists alike. Whether in Amsterdam or throughout the rest of this country filled with canals and waterways, the windmills are stunning. It’s even possible to go on a bike tour of the mills to visit some of the most beautiful, iconic and picturesque mills in the world! Those who find other countries in Europe to be more accessible can celebrate National Windmill Day in the United Kingdom, Germany, Switzerland and other countries, where it is often referred to as National Mills Day.

Watch Some Windmills

For those who happen to live in an area that has a single windmill or a whole windmill farm, it might be fun and interesting to go out and watch them turn. More and more communities are dotting them about the landscape as a sustainable source of power. As you gaze upon and contemplate just how important these are to a bright, pollution-free future for our children, enjoy watching their soothing motion and consider their history too.


FAQ
How do windmills work?
Wind turbines use their large blades to collect kinetic energy as the wind flows over the blades to create “lift”.[1]
Do windmills make noise?
Windmills do emit a characteristic noise, mainly generated by the movement of the blades, but the noise is generally weak.[1]
Are windmills renewable energy?
Wind is an emissions-free source of energy that has fewer effects on the environment than many other energy sources.[1]
Do windmills create electricity?
Yes! Wind turns the propellers of the windmill around a rotor that, in turn, spins a generator to create electricity.[1]
How much do windmills cost?
The standard windmill costs around $2-4 million with another $40-50,000 in per year in operation and maintenance.[1]