What happened

Shares of the global market leader in wind turbines, Vestas Wind Systems (OTC:VWDRY), are up 9.5% at 1:15 p.m. EDT on Aug. 11 following the release of the company's second-quarter results after market close yesterday.

So what

Vestas, a Danish company that manufacturers, installs, and maintains wind turbines all over the world, reported revenue of 3.5 billion euros, a massive 67% increase from last year.

Worker suspended from a cable on a wind turbine.

Image source: Getty Images.

Profits did fall, with the company reporting an unexpected and one-time expense of 175 million euros related to a "confined number" of turbine blades already installed that the company replaced under warranty. The company reported EBIT (earnings before interest and tax) of 34 million euros, down from 94 million euros last year.

Vestas is experiencing growth in demand for services as well as new wind turbines. Services revenue increased 6%, and this revenue, much of which is recurring in nature, is also highly profitable. The company averaged 28.5% EBIT margins on service revenue in the quarter, versus an adjusted EBIT margin on consolidated revenue of 5.9%.

Now what

Vestas stock is at an all-time high, but for good reason. Management reaffirmed its full-year expectation for 14 to 15 billion euros and announced its total backlog had grown to 35 billion euros, with more than half of that revenue from highly profitable services.

Over the past several years, Vestas has prioritized growing its services business, and that strategy is paying off. Not only does this segment have the potential to generate more profits, but it's also proving a source of consistent, recurring revenue.

Looking ahead, global demand for wind turbines is very strong, and Vestas is positioned to remain a leader. Investors should give this renewable energy leader a close look. Even at all-time highs, Vestas looks like a winner that's set to keep winning for years to come.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.