DEEP DIVE | Net Zero design

QUANTIFYING DESIGN-LED CIRCULARITY

CHALLENGE

Uncovering cost and emission hotspots

The impact of the new design was unclear. Benchmarking against the professional-grade device helped identify key cost and emission hotspots—revealing opportunities for optimization.

IDENTIFYING IMPACT LEVERS

A comparative Life Cycle Assessment (LCA) and should-cost analysis over eight weeks quantified the environmental and financial impact of both designs.

Teardown data, the Bill of Materials (BOM), and ecoinvent inputs established a baseline—pinpointing key levers to reduce emissions and cost through circular design.

Comparison chart showing manufacturing cost and emissions for water testing device, with key considerations on production setup, labor, logistics, overheads, and material costs, highlighting a 24% cost reduction and 40% CO2 reduction.
80% of a product's CO2 emissions are defined in the product develoment phase, design plays a huge role in defining the future carbon footprint of a product

WHY NET ZERO STARTS AT DESIGN

Up to 80% of a product’s footprint is locked in at the design phase—yet every product eventually becomes waste. Designing for sustainability from the start isn’t just responsible; it’s a strategic advantage. A Net Zero strategy reduces emissions, transforms business models, strengthens consumer relationships, and drives lasting impact.

PATH TO NET ZERO

Let’s break it down into these 4 steps

To chart a path to Net Zero, I developed a clear approach: Measure, optimize, reduce, and offset—cutting carbon at the source and managing what remains.

01

MEASURE

the entire product lifecycle with Life Cycle Assessment (LCA) to benchmark impact

Addressing Scope 3 emissions is crucial they typically make up the largest share of a company’s carbon footprint

It is an imperative to MEASURE the entire product lifecycle with Life Cycle Assessment (LCA) to benchmark impact

Materials’ and ‘Use’ phase drive most emissions. Improving material efficiency, reducing energy use, optimizing packaging, and nearshoring can cut the largest share of a product’s footprint.

LCA assessment comparison of existing device (linear) and new designed PaaS device (circular business model) highlighting ‘Materials’ and ‘Use’ phase drive most emissions.

OPTIMIZE

with circular design principles to close material loops, extend product life, and enable cost-effective sustainability

02

The 6 Rs of circular innovation drive material efficiency, extend product life, and reshape business models

The 6 Rs of circular innovation drive material efficiency, extend product life, and reshape business models

A smaller, app-based redesign reduces material use, components, and e-waste—making the product more sustainable and efficient

Comparison of existing device to a new, redesigned version emphasizing reduced material, fewer parts, and recycling. The new device uses less material, fewer LED sensors, smaller PCB, no molded inserts, and no batteries.

Easy to clean, service, and reuse. Built for subscription, making it intuitive and enjoyable to use

The newly design PaaS water testing device outlines principles of repair and care, rethinking, and reuse for maintenance, value proposition, longevity, and emotional durability of products.

REDUCE

to achieve Net Zero beyond circular design strategies

Tracking each initiative’s cost and CO₂ impact revealed ways to offset higher decarbonization costs through savings from material reductions, renewable energy, and nearshoring. Despite the slight cost increase of sourcing 80% PCR ABS, these strategies lowered emissions and remained cost-effective.

03

OFFSET

remaining carbon emissions to achieve Net Zero

After applying all circularity levers, 12 kg CO₂e remained—a final hurdle to Net Zero. As a last resort, carbon offsets were evaluated, comparing carbon capture vs. tree planting. Though cost-effective, tree planting’s impact is uncertain due to slow carbon sequestration.

04

A step-by-step Net Zero roadmap showing how measuring, circular design, green procurement, and low-cost offsets reduce a product’s carbon footprint from 41 kg CO₂ to 0 kg, achieving a 24% cost reduction

⚠️

Carbon offsets should be a secondary tool for Net Zero, as reforestation faces challenges with tree survival and carbon permanence, while carbon capture remains costly and unproven—making direct emissions reductions the priority.

Mapping circularity: From product to ecosystem

To understand circularity as a network, we must map the entire ecosystem. Success depends on an interconnected system where companies, partners, and consumers collaborate at every stage to close the loop.

Mapping circularity: From product to ecosystem.To understand circularity as a network, we must map the entire ecosystem. Success depends on an interconnected system where companies, partners, and consumers collaborate at every stage to close the loop

Inspired to design for circularity? Let's connect and make it happen!

In 2022, I led an 8-week analysis with analysts, designers, and engineers to assess life cycle impacts, costs, and carbon reduction, developing a net-zero strategy and codifying key processes for future use.

TEAM

Program Leadership

Lea Kobeli

LCA and Should Costing Lead

Abhay Chandora

Analysts

Jonathan Miao, Ronald Miller

Mechanical Engineering & DFM

Michael Boren, Alex Dakin

Business Development

Jedd Martin

CREDITS

Designed by McKinsey Design
Media Credits McKinsey Design, Leslie’s, LaMotte

This project is presented for portfolio purposes only and is not affiliated with or endorsed by any company. All rights reserved.

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