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S&P’s Energy Markets Specialist, Janet McGurty, details Marathon’s Q1 earnings call. In the article, Janet highlights Marathon’s announcement to once again partner with One Energy for a Wind for Industry project at its Dickinson, ND facility, as it aims to “balance its traditional oil refining business as it moves forward to increase its renewable fuel operations in order to lower its carbon footprint.” 

This week’s Wind View features a photo taken from high above the North Findlay Wind Campus (NFWC).

Captured via drone, four of the now eight turbines located at the NFWC (as well as two turbines in the distance, part of a neighboring Wind for Industry project) can be seen. These wind turbines directly power nearby factories, decarbonizing operations and providing 20 years of electricity rate control.

This photo also provides an aerial view of One Energy’s component yard, stocked with wind turbine blades and a variety of components such as generators and nacelles.

For their second Wind for Industry project at one of their facilities, Marathon Petroleum Corporation (MPC) signed an agreement with One Energy for five 2.3 MW wind turbines to be installed at their Dickinson, ND location. Read MPC’s announcement, which declared the project will “help further decrease its carbon emissions profile” by generating more than 40 million annual kWh of energy for the facility and offsetting ~45% of the plant’s electricity needs – at a fixed rate for the next 20 years. 

May 03, 2021 – Wind Study | Question 18

Wind Study | Potential Energy and Gravity

The technician in the photo below has HUGE potential… potential energy that is!

We know that One Energy’s wind turbines convert wind energy into electrical energy – but what do they have to do with gravitational potential energy? Find out in today’s Wind Study!

This week’s homework asks you to calculate the potential energy of a One Energy technician standing on top of a wind turbine tower, carrying all their tools and safety equipment.

Then, use the same mathematic equation to determine the gravitational potential energy of the turbine tower itself!

🔗 Download the questions here and don’t forget to come back on Friday to check the answer!

You can also find and share this assignment on Facebook and Twitter!

You’ve probably noticed that wind turbines typically have three blades – have you ever wondered why?

There isn’t one single reason that utility-scale wind turbines have three blades – rather, it’s a culmination of many factors. Think of a three-bladed turbine as being the best of each world, when it comes to:

  1. Cost
  2. Efficiency
  3. Aesthetics

When determining the number of blades for a wind turbine design, there are two main factors to consider: cost and blade structure.

A design with more than three blades, for example, does mean there is a marginal increase in the turbine’s efficiency – but manufacturing and transporting the additional blade(s) costs more money. Adding more blades also means each bade must be thinner, and thus less stiff. This makes it more difficult to keep the blades straight, therefore making them less effective from a structural perspective.

For a design with less than three blades, there are two options: one blade and two blades. One-blade turbines are hard to get started and are very unbalanced, even with a counterweight.

Two-blade turbines, on the other hand, are arguably as good as (if not better than) a three-blade design, depending on the application. Having two blades (rather than three) means you’ll save the cost of one blade; however, the two remaining blades must be larger in size, which erodes some of this cost advantage.

In addition, when a two-blade turbine turns to face the wind, the rotational forces change significantly as the blades rotate (kind of like when a figure skater is spinning, they can bring their arms in to spin faster or out to spin slower). This changing force makes the two-blade turbine unstable when turning into the wind. Three blades increase this stability due to the balanced shape, no matter the blade orientation or rotation speed.

What’s more, two-blade turbines don’t rotate as smoothly as their three-blade counterparts (in fact it can look a little bouncy!) making them less visually appealing.


         

There you have it – the main reasons three-blade turbines are more common: cost, efficiency, and aesthetics!

For today’s Science Short, we’re conducting one of our favorite demonstrations at One Energy: the pop can experiment!

We use this experiment to illustrate something called atmospheric pressure, also known as air pressure.

In this episode, Nate demonstrates the effects of temperature on molecules and air pressure – using a few household items:

a soda can

a bowl of ice water

♨️ a hot plate

and plenty of safety gear!

Watch to see what happens to the can – and be sure to subscribe to our YouTube channel for more educational videos!

April 30, 2021 – Wind Study | Answer 17

No screws loose here! This week’s Wind Study called for some sharp (and tight!) math skills.

Check the answers to Monday’s homework questions about torque, force, bolts, and wrenches – to see if you solved the equations used to help ensure our wind turbines are extra sturdy!

Download the answers here.

And find the questions from Monday here.

Remember, this educational series can always be found on Facebook and Twitter!

 

 

On a construction site, the occurrence of trips and/or sprains are somewhat inevitable. But what if we told you the impacts of these incidents could be significantly reduced by an activity that takes less than four minutes?  

Check out today’s Safety Minute to learn more about “Stretch-and-Bend” – a simple daily activity that can have a major impact on your construction team’s well-being.

Be sure to subscribe to our YouTube channel so you don’t miss a future minute.

There is no shortage of highly visible public figures in our lives. Celebrities, athletes, politicians in the spotlight – the list goes on. Those public figures have an impression on all of us to some extent or another. Some   have so much of an impact that they’ve garnered the title of “influencer.” On a less public scale, there are plenty of people visible to smaller circles who have their own spheres of influence. Leaders in our workplaces, dynamic people in volunteer roles in our communities, churches, and schools, and even strong personalities in our own families.

I don’t think it is uncommon to reflect on the impact various people have had on us, but I do think we spend much less time considering the impact we have on others, particularly those who aren’t in our most immediate circles.

My husband and I have four kids, and to say things were a little wild in our household when they were young would be an understatement! One of the things we did to maintain our sanity was to go out together, without kids, every Saturday …without exception. In order to do that, we needed a (VERY!) reliable babysitter. We were incredibly fortunate to have a small string of sitters who carried us through more than a decade of craziness. Our last sitter, Renee, came to us when she was a college student, and she worked for us through her undergraduate and master’s degrees. When she got married, each of our kids had a role in her wedding, and we remain in touch.

When our oldest graduated from high school, Renee and her husband came to the graduation party, and they pulled me aside to share the news that they were expecting their first child. I was so excited for them and also very touched that they had chosen to share the news with me in a private moment. They continued to tell me how much they had learned about raising children from me, and how they wanted to parent their kids the way my husband and I had parented ours. I was shocked. All the years I had spent being so grateful to Renee for the wonderful impact she was having on my marriage and family, yet I had never given much thought to the impact we were having on her – and her fiancé! It was more substantial than I would have ever guessed.

On the professional side, I had many a young auditor pass through my office over the years. One in particular was very young, sharp, and respectful to everyone in my office, and he had a great work ethic. After a few years, he took a job as a controller for a client, and he stayed with them for decades, working his way up the ladder.

I saw on LinkedIn recently that he is now the CEO of that business, and I reached out to congratulate him. We exchanged updates on the decades that had passed and commiserated on the challenges the economy had presented to our industries over the years. He then made it a point to tell me how much he had learned from me about leading a business through a time of intense crisis. And he joked how unfortunate it was that he had needed to use everything he had learned in his own business as it navigated its own crises. His comment was touching and completely unexpected. Never in a million years would I have thought that my leadership style was being noted by a young auditor who spent only a few weeks a year in my office.

I consider being a wife, a parent, and a leader, through chaos and crisis, to have been the most important roles I’ve had in my life. To know that I had such an influence on the people around me – not the ones I was TRYING to influence (kids and employees), but the more peripheral ones – remains incredibly meaningful to me. It has made me realize that we are always being observed, and we are always affecting those around us, whether we are trying to or not. The “tone at the top” isn’t just a catchphrase, and it isn’t just applicable in hierarchical organizations. You don’t have to have the title “influencer” to influence. Even without intent, we impact others in our lives. People are paying attention. Always be worth watching.

Anne Bain is the Head of Accounting at One Energy.

Learn more about Anne and the One Energy team.

April 28, 2021 – Wind Views | Heavy Machinery

Building a utility-scale wind turbine requires a lot of heavy machinery. Today’s Wind View shows off some of the equipment we use when lifting a rotor (hub + three blades, shown on the ground in this photo) to attach it to the generator during Wind for Industry project construction!

Lifting the rotor, like many of our critical lifts, is a “tandem pick,” which means this step requires two cranes, adding engineering and operational complexities.

Pictured below, you can see:

  • A Manitowoc 16000 crane, referred to as the “main crane,” which does the heavy lifting (it’s the red crane in this photo, with the yellow rigging attached around the blades)
  • A Link Belt 1100 crane, referred to as the “tail crane,” which is smaller and used for guidance and maneuverability during the lift (the white and black crane shown here with rigging closer to the tip of a blade)
  • An articulating manlift, used to lift technicians (in this photo, it’s the green machine lifting an intern and a field engineer to facilitate removal of rigging from the tail blade, when the main crane takes control of the load)
  • A John Deere dozer, used for a number of activities on site (that’s the yellow machine by the blade tip in this photo). In this instance, the dozer will hold a tagline, which is a strong rope that keeps the rotor from shifting during the lift.

While these machines have industrial strength, they couldn’t get the job done without the expertise of our in-house operators, technicians, and engineers!