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  • Alberta’s Hydrogen Future: An Introduction

    Alberta’s Hydrogen Future: An Introduction

    With the looming threats of climate change and the worldwide push to limit global warming to 1.5°C, countries are more focused than ever on reducing carbon emissions. Despite the meteoric rise in renewable energy production there remains a need for clean, on-demand fuels, especially for fossil-fuel-reliant areas like Alberta. Enter: Hydrogen.

    What is Hydrogen?

    Hydrogen, the most abundant element in the universe, is an exciting prospect for the next generation of zero-emission fuel. As a non-carbon fuel (i.e., a molecule that doesn’t contain carbon), its use does not produce carbon emissions.

    2 H2 + O2 → 2 H2O + energy

    Equation of hydrogen combustion.

    Unlike electricity generated from solar or wind, which must be used or stored immediately, hydrogen acts as a form of chemical energy storage. It can be converted to other energy forms (typically electrical or thermal) at the user’s discretion. However, hydrogen does not exist naturally as a gas and must be extracted from hydrogen-containing compounds. Two of the most popular production methods are electrolysis and fossil-fuel decomposition.

    Hydrogen Production Methods

    Green Hydrogen (Electrolysis)

    Electrolysis, often called “green” hydrogen, involves passing an electrical current through water, splitting it into hydrogen and oxygen. This method produces no direct carbon emissions if powered by renewable energy.

    2 H2O + electricity 2 H2 + O2

    Hydrogen production with electrolysis.

    Grey and Blue Hydrogen (Fossil Fuel-Based)

    Most fossil-fuel-based hydrogen production, known as “grey” hydrogen, uses steam methane reforming (SMR), in which hydrocarbons react with steam to produce hydrogen and carbon dioxide. When combined with carbon capture and sequestration (CCS), this process is referred to as “blue” hydrogen.

    CH4 + H2O (g) CO + 3 H2

    Hydrogen production with SMR.

    CO + H2O (g) CO2 + H2

    The ‘CO-shift’ reaction.

    Hydrogen production pathways described in this article (from IEEE SmartGrid)

    What is a Hydrogen Economy?

    “Hydrogen economy” refers to a scenario where hydrogen becomes a primary energy carrier across multiple sectors, especially where other low-carbon solutions may not be feasible. In other words, hydrogen would be used as a go-to fuel, similar to how gasoline and natural gas are used today. Key sectors include:

    Power Generation

    Renewable energy sources like solar and wind are intermittent, requiring complementary storage solutions. Germany, a leader in renewables, faces challenges during “dunkelflaute” events—periods of low solar and wind output. In part to prevent the severity of these, Germany has maintained its use of fossil fuels (mainly coal and gas) to produce a combined 46% of its electricity in 2023,  27% of which was from coal. Hydrogen can serve as a low-emission on-demand fuel for peaking power plants or energy storage, which could replace the need for fossil fuels as an energy security tool.

    Representation of a dunkelflaute on a load vs time diagram (from Hügo’s Newsletter)

    Heating Sector

    Hydrogen could be used as a replacement for natural gas for heating. Work is underway in experimenting with hydrogen-natural gas blending, with ATCO Gas currently testing a 5% hydrogen blend in Fort Saskatchewan, Alberta. While challenges exist, including hydrogen’s odorless nature and combustion differences, demonstration projects, such as a hydrogen-powered show home in Sherwood Park, highlight its potential.

    Transportation

    In the traditionally hard-to-decarbonize sector of freight and long-distance transportation, hydrogen fuel cell electric vehicles (FCEVs) offer advantages over battery-electric vehicles (BEVs) due to their quick refueling times and high energy density. Unlike BEVs, which require long charging periods, FCEVs convert hydrogen into electricity through a chemical reaction, producing only water as a byproduct. Current barriers to this technology include a lack of fuelling infrastructure and a young (non-competitive) market for FCEVs.

    Hydrogen in Alberta

    Alberta, as a province historically reliant on oil and gas, has faced increasing pressure to transition toward lower-carbon energy. With its vast resources of natural gas and substantial carbon capture and sequestration (CCS) potential, Alberta is well-positioned to excel in the production of blue hydrogen.

    Alberta’s Hydrogen Roadmap

    In 2021, Alberta released the Alberta Hydrogen Roadmap, outlining key markets and policy strategies. Several major hydrogen projects have since emerged:

    To date, Alberta has invested over $106 million in 37 hydrogen projects.

    Locations of hydrogen projects announced throughout Alberta as of June 2023 (from Water Smart).

    The Road Ahead

    If hydrogen holds so much promise, why not go all-in? Challenges remain, including:

    • Environmental concerns: How much does hydrogen actually reduce emissions compared to current and other emerging technologies?
    • Cost-effectiveness: Is hydrogen production efficient and affordable enough to be widely used?
    • Policy uncertainty: How will shifting regulations impact investment and adoption?

    Over the next few posts, I will take you through an in-depth analysis of Alberta’s hydrogen landscape, exploring environmental, economic, and policy challenges. This discussion is based on a report I co-authored with Mustajab Safarov in March 2024, evaluating Alberta’s hydrogen production mix and future scenarios.

    Stay tuned for the next installment of this series!

Volleyball

  • Mastering the Float Serve: The Overlooked Power of Trajectory

    Mastering the Float Serve: The Overlooked Power of Trajectory

    In volleyball, every rally starts with a serve. It’s not just the beginning of play—it’s an opportunity to take control, set the tone, and put the opponent on the defensive. Whether you’re a seasoned player or new to the game, mastering the art of serving is key to elevating your performance on the court.

    Mastering the Serve: Precision over Power

    Serving is one of the most impactful aspects of volleyball. It initiates every rally, sets the tone, and puts pressure on the opponent. A great serve is about more than hitting the ball hard: it’s about being smart—using control, precision, and a solid game plan. When a player steps up to the service line, their goal is to put their team in a strong position right away by:

    • Scoring directly through aces or forcing the opponent into a poor pass,
    • Limiting the opponent’s attack options by disrupting their offensive setup, or
    • Targeting specific locations to put pressure on passers and create stress in the opponent’s system.

    To pull this off, servers need to focus on three main factors: speed, placement, and whether the serve is floating or spinning. For float serves specifically, placement and the float effect are the two primary factors that make the serve difficult to handle. The float effect can be somewhat random, but the server has full control over where they place the ball. That’s what we’ll be focusing on here.

    The 3 Dimensions of serve placement

    When analyzing serve placement, we can break it down into three core elements: angle, depth, and trajectory.

    A top view of volleyball courts showing the serve variables of angle and depth.
    Top view of a volleyball court showing angle and depth of serves.

    Most players understand the building blocks of angle and depth, but trajectory is often overlooked. Let’s break down each part and explore how they can work together to make the serve more effective.

    1. Angle refers to the side-to-side direction of the serve—essentially, which passer or which seam (the space between two passers) you are aiming for. Imagine viewing the court from above; angle determines which part of the receiving formation the ball will reach. Are you aiming for the left-side passer? The seam between two passers? The angle is all about deciding where on the court you can put the most pressure on the receiving team.
    2. Depth describes how far forward or back the serve will land if left untouched—whether it’s a short serve landing just behind the attack line or a deep serve targeting the back row. Changing up the depth of your serve keeps passers on their toes, forcing them to adjust and making it hard for them to get comfortable. A well-timed short serve, for example, can force a front-row hitter to step out of position and disrupt the timing of an attack.
    3. Trajectory is the height and curvature of the ball’s flight path from the point of contact to the opponent’s side of the court. Picture trajectory as if you are observing the serve from the side. Is the serve flat and fast, just skimming over the net? Or is it a high, floating serve that drops steeply into the backcourt? Trajectory affects how much time the passer has to react, where they need to make contact, and how difficult it is for them to read the ball’s flight.
    A side view of the court showing the variable of serve trajectory, or path of the ball.
    Multiple trajectories are shown as paths the ball could take to get over the net, looking at the court from a side view.

    Trajectory: The Overlooked Advantage

    While angle and depth are both crucial, the ability to manipulate the trajectory of a float serve can open up new tactical opportunities. By controlling the trajectory, you can:

    • Reduce the passer’s reaction time by shortening the ball’s flight path, making it reach the target faster.
    • Increase the serve velocity by flattening the ball’s trajectory, allowing for a higher velocity serve to land in
    • Control the passer’s contact point by adjusting trajectory, forcing them into tough positions and increasing decision-making pressure.

    The last point—controlling the passer’s point of contact—can be especially powerful when executed well. By adjusting the trajectory, you can target areas that are inherently difficult for a passer.

    Putting the 3 Dimensions Together

    Here are three examples of effective serving targets that incorporate angledepth, and trajectory:

    Just in front of a passer’s foot: Aiming just in front of the passer’s foot challenges their ability to read the serve trajectory and move to the ball, which often leads to a weaker pass.

    In this example, Eshenko sends a depth-change serve just in front and outside of Russel’s right foot, causing Russel to misread the serve trajectory. See the full clip here.

    Float serve from Canada’s Eshenko to the spot just outside and in front of the passer’s (Russel’s) foot, leading to a late move and low-quality pass. Video from Volleyball Source 2.0 on YouTube.

    Between the arm and hand zones: Targeting the area where the passer has to decide between using their arms or hands (the passer’s “grey zone”) can cause hesitation, making an error more likely. If the passer does make a quick decision, they still must make quick moves to compensate for the ball being higher or lower than the ideal position.

    In this clip, Diez (the French libero) commits to using forearms early, and has to jump to adjust when Kentaro’s float serve travels into the libero’s grey zone. When a passer jumps it introduces more variability into the passing action, which means more passing errors. See the full clip here.

    Float serve from Japan’s Kentaro to the libero’s “grey zone”, forcing the libero to jump to pass the ball with their forearms. Video from MMG Volley Videos on YouTube.

    Passer conflict zones: Serving into spaces where two players might both hesitate—such as seams or near a middle blocker—can create confusion and result in poor communication and execution.

    In this example, Tillie sends a hybrid float serve (tossing spin and hitting float) into the conflict zone between the position 1 passer (#14), middle (#10), and right side (#1). This decision crisis (of who will pass the ball) causes the #14 to move late and eliminates their ability to attack. See the full clip here.

    Spin-to-float hybrid serve from France’s Tillie, targeting the position 2 conflict zone. Video from MMG Volley Videos on YouTube.

    How to Practice Serving Trajectory

    Kerry MacDonald, former head coach of UBC and current Chief Sport Officer at Volleyball Canada, first introduced me to the concept of controlling serving trajectory in 2017. Imagine a hula-hoop above the net that you’re aiming to serve through, and a loonie on the floor as your target for where the ball should land. Doing so helped me picture not just where the ball should land but also the path it should take through the air.

    The hoop-and-coin targeting method, showing various possible serving trajectories. Using this method, the server aims to put the serve through a hula-hoop-sized zone over the plane of the net and land the ball on a target the size of a coin. Original image from MMG Volley Videos on YouTube.

    Over time, I adapted this to incorporate two distinct targets: one above the net (like the hula-hoop) and one on the court (like the loonie). Eventually, I began thinking about the three-dimensional spot where I wanted the passer to contact the ball (i.e., a target that isn’t on the floor, but is rather attached to the passer). For example, did I want the passer to take the ball with their hands toward the inside of the court (like in the image below), or with their forearms by their outside foot? By consistently aiming for tough spots, I could disrupt the passer’s rhythm and make my serves much more effective.

    An example of using a zone above the net (red circle) and targeting a spot relative to the passer’s body (small green circle). Notice that if the server hits the targeted point it will force the player to move into the court (making it more difficult to attack on the outside), and cause the player to make a late decision between using forearms or hands to pass (increase pass variability). Original image from MMG Volley Videos on YouTube.

    Takeaways for Athletes

    When practicing a float serve, it’s important to consider all three components—angle, depth, and trajectory. Start with simple goals: choose a spot on the court as a target, and then determine where the ball should pass over the net. Is the serve easy for passers to handle, or does it make them uncomfortable with its placement and unpredictability?

    The key to improving a float serve lies in repeatability—not just hitting the same target on the court, but also consistently achieving the same trajectory over the net.

    Takeaways for Coaches

    Coaches should help players understand the importance of all three components of serve placement—angle, depth, and trajectory. Encourage athletes to experiment with different trajectories and observe how these changes impact the passers’ ability to handle the serve. Emphasize the value of setting specific, repeatable targets, both over the net and on the court, to build consistency. Providing visual aids like cones or markers for trajectory points can be highly beneficial for players as they develop these skills.

    Your Turn

    How do you incorporate trajectory into your serving strategy? Are you already considering these three dimensions—angle, depth, and trajectory—when you serve or coach your athletes? What other tactics have you found to be effective in challenging passers?

    I’d love to hear your thoughts and experiences. Let’s discuss in the comments below!