One sight always catches our breath as we drive Route 9 across what sometimes feels like the fringe of civilization as we’ve known it. And, for the uninitiated, the state highway from Bangor to Calais can become pretty monotonous in its long uninhabited stretches. As they say, make sure you have a full tank of fuel before you tackle it.

On a clear day, from a dozen miles away you might catch glimpses of a corner of the windfarms on Weaver Ridge and adjoining hills in Hancock County – I’ve counted at least 30 towers before the road dips away – but there are more tucked away in the high terrain. Still, nothing can prepare you for that first flash of the big blades turning gently in the air right in front of your face, or so it seems.

They dance gracefully – sometimes as a solo, then as a pair, or four. You spot them to your left but they suddenly show up on your right – the roadway twists along the slope. As those slip behind you, more giants rise above the hedge of forest. And all too soon, you’ve moved on.

The towers and their blades are bigger than you’d suspect. In fact, at the moment, they’re the tallest wind-powered electrical generators onshore in America, though much larger ones are projected for offshore installation.

Wind generation accounts for nearly a third of the electrical production in Maine, though the state also imports a fourth of its electricity from Canada, largely Hydro Quebec.

I am baffled by the “not-in-my-backyard” opponents to similar windfarms. They still want energy for their computers and refrigerators and lighting, right?

As if these “spoil the view”? I find them mesmerizing, even enhancing as a kind of sculpture and a reminder of the currents in the air itself. They definitely look better than a toxic oil refinery – and there’s no awful smell. For that matter, they strike me as much more attractive than a television transmitter or cell phone tower as a hilltop crown. And they do remind us of the charming Dutch windmills in a much smaller scale.

The latest installation, 22 Vesta towers and turbines, cost $150 million and went into full operation earlier this year.