Does Lifecycle Analysis in Product Design Matter?

Every sustainability claim should be backed by evidence. The most rigorous form of evidence available for product environmental impact is a lifecycle analysis — a peer-reviewed accounting of a product's footprint from raw materials extraction through manufacturing, use and disposal.

KeepCup's product range is supported by independent, peer-reviewed LCAs conducted in accordance with ISO 14040 and ISO 14044. The methodology, findings and limitations are documented and publicly available. Here's what an LCA actually measures, why KeepCup invests in the process, and how to read LCA claims with the right level of scrutiny.

What an LCA Measures

A credible lifecycle analysis covers:

• Raw materials extraction and processing.
• Manufacturing energy, water and emissions.
• Distribution and transport.
• Use-phase impacts (washing, drying, refills).
• End-of-life (recycling, landfill, energy recovery).

The analysis quantifies inputs and outputs across each stage, then translates them into impact categories: CO2-equivalent emissions, water use, human toxicity, ecosystem damage, and others. ISO standards require these categories to be reported transparently — not cherry-picked.

The Functional Unit Question

The most important question to ask about any LCA is: what is the functional unit? In other words, what's actually being compared?

For a reusable cup, the right functional unit is "the function performed by the product over its lifetime" — not "one cup." A reusable replaces many disposables across its lifetime, and the comparison has to account for that. Marketing-grade LCAs that compare one reusable to one disposable produce misleading conclusions.

KeepCup products are tested to 1,000 uses. The LCA functional unit is set against that lifetime, with sensitivity analysis showing how per-use impact varies under different use assumptions.

Why Peer Review Matters

An LCA commissioned by the brand making the claim, conducted by a consultancy that depends on that brand for repeat business, with no independent peer review, is structurally compromised. The fix is straightforward: independent peer review by qualified experts who don't have a commercial relationship with the brand.

KeepCup's LCAs are peer reviewed by independent academic experts in product environmental assessment. The peer review covers methodology, data quality, assumptions and conclusions. Findings that don't survive peer review aren't published.

What KeepCup's LCAs Have Influenced

The LCA isn't a marketing exercise — it's the methodology used to know whether the product is getting better or just claiming to. Specific product decisions informed by LCA findings include:

• Material selection — weighting durability and recyclability against production footprint.
• Modular replacement parts — LCA showed that extending product life through replaceable components dramatically improves per-use impact.
• Renewable electricity at manufacturing — LCA quantified the production-phase impact and identified electricity sourcing as the largest single lever.
• Packaging reduction — LCA-driven decisions on packaging weight, material and recyclability.

How to Read an LCA Claim

Six questions worth asking of any product LCA claim:

1. Is the full LCA report publicly available, or just a marketing summary?
2. Is the document ISO 14040 / 14044 compliant?
3. Has the document been peer reviewed? By whom?
4. What is the functional unit?
5. What impact categories are reported — all major ones, or just the favourable ones?
6. What end-of-life assumptions are used, and are they realistic to the relevant market?

Any "no" answer is a yellow flag. Several "no" answers are a red flag.

What This Means for Customers

For a customer evaluating sustainability claims, the LCA test is one of the strongest available. Brands willing to publish full, ISO-compliant, peer-reviewed LCAs are signaling confidence in their data. Brands citing LCAs without publishing the underlying reports are signaling the opposite.

"Sustainable" is not a verified term. "Lifecycle analysis published in accordance with ISO 14040 and peer reviewed by [named institution]" is.

FAQs

What is a lifecycle analysis (LCA)?

An LCA is a standardized methodology (ISO 14040 / 14044) for measuring a product's environmental impact from raw materials extraction through manufacturing, distribution, use and disposal. It reports across multiple impact categories.

Are KeepCup's LCAs independent?

Yes. KeepCup's LCAs are conducted by independent consultancies and peer reviewed by academic experts. Full reports are publicly available.

What's the functional unit in a KeepCup LCA?

The function performed by the product across its tested lifetime of 1,000 uses, with sensitivity analysis covering shorter and longer use scenarios.

How can I tell if an LCA is credible?

Six checks: full report publicly available, ISO compliant, peer reviewed, fair functional unit, all major impact categories reported, and realistic end-of-life assumptions.

Read about KeepCup's LCA-driven design >