Moving from Why to How: Six Sigma Green

Moving from Why to How: Six Sigma Green

When I first applied to the Erb Institute, I knew I wanted to sit at the intersection of business and sustainability. I had the passion and the "why." But what I was looking for—and what I think many of you are looking for—was the "how." How do we actually transform a massive, sluggish corporate system into something efficient and regenerative?

Last week, I found a big piece of that puzzle.

I spent 2 intensive days training for my Lean Six Sigma (LSS) Green Belt. As an Erb student, this training was a revelation, teaching me more about the Entrepreneurial Mindset to solve the world’s most pressing waste problems.

In the Erb community, we talk a lot about "systems thinking." Lean Six Sigma is essentially systems thinking with a stopwatch and a calculator. The goal is simple: Lean is about reducing waste, and Six Sigma is about reducing variation.

When you combine them, you get the DMAIC methodology (Define, Measure, Analyze, Improve, and Control).

As a prospective student, you might wonder how this applies to sustainability. I like to think about it this way:

Waste isn’t just trash in a bin; it’s wasted energy, wasted time in a hospital waiting room, or wasted water in a supply chain.

Variation is the enemy of sustainability. If a wind turbine’s output varies wildly or a circular packaging return system is unpredictable, the business case falls apart.

My "Aha" Moment: Control vs. Capability

One of the most impactful parts of the workshop was learning the difference between a process being "In Control" and being "Capable." We looked at a case study of a bus driver. The driver might be "in control"—consistently arriving between 8:15 and 8:30 AM every day. That’s a stable process. But if the "Voice of the Customer" (the students) requires the bus to arrive by 8:00 AM, that stable process is not capable.

This is exactly where we find ourselves in the climate crisis. Many of our global systems are "in control" (they are stable and predictable), but they are absolutely "not capable" of meeting the specs required for a 1.5-degree world. LSS gives us the statistical tools to stop guessing and start proving what needs to change to bridge that gap.

Why This Matters for Your Journey

If you join the Erb Institute, whether you are pursuing a dual degree (MBA/MS) or joining as an undergraduate like me, you’re getting a toolkit to become a high-impact leader. This Green Belt training was a perfect example of the "hard skills" Erb offers. We don't just talk about "doing good"—we learn how to:

• Quantify impact: Using tools like Pareto Charts (the 80/20 rule) to find the "significant few" causes of a problem.

• Brainstorm effectively: Using "Six Thinking Hats" to move past groupthink.

• Ensure longevity: Using the Control phase to make sure a "green" initiative doesn't disappear the moment the pilot program ends!

Overall, the course taught me the framework to take a messy, wasteful process and refine it into something that works for the business, the customer, and the planet.