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Primary data makes your LCA more accurate, credible, and genuinely decision-ready.
But collecting it can feel like herding cats — suppliers, factories, and internal teams each hold small but crucial pieces of the puzzle.
This guide helps you structure your first data-collection process with clarity, confidence, and minimal chaos.

Why Primary Data Matters

  • 🌱 More accurate than generic databases
  • 🔍 Helps identify real hotspots in your production or supply chain
  • 🏆 Strengthens internal decision-making and customer trust
  • 📈 Supports data-driven sustainability improvements
Even partial primary data can dramatically improve your first assessment — don’t wait for perfection.

Who to Ask (and What to Ask For)

SourceWhat to Request
Internal factoryMaterial inputs/outputs, energy, water, waste
SupplierTransport modes, packaging, recycled content
LogisticsShipping distances, load factors
Assembly partnersAssembly energy, scrap rates, equipment types
Centralizing sustainability data from these groups makes future LCAs easier and helps teams collaborate around a shared foundation.

🛠️ Sample Data Table (for Suppliers)

ParameterValueUnitNotes
Material input1,250kgPolymer resin
Electricity1,900kWhAnnual total
Transport700kmPlant → warehouse
Scrap rate8%Injection molding
📌 Pro tip: Use consistent units and always include the year and source. You’ll thank yourself later.

5 Golden Rules of Primary Data Collection

  1. Start simple — focus on major materials, energy use, and transport first.
  2. Avoid perfectionism — approximate values are better than no values.
  3. Document source & year — avoid losing context in anonymous spreadsheets.
  4. Ask for ranges — low/average/high values help reflect uncertainty.
  5. Keep a clean audit trail — consistent naming and version control save hours.
A clean data structure today means faster, scalable sustainability workflows tomorrow.

Tools That Make It Easier

  • Google Forms or Typeform for supplier inputs
  • Shared folders (Notion, SharePoint) for internal logs
  • Excel sheets with dropdown fields for units
And for teams that want to streamline the entire workflow, Sustainly offers a transparent AI copilot that:
  • Flags missing or inconsistent units
  • Helps standardize materials across suppliers
  • Organizes primary data in a centralized sustainability hub
  • Supports both experts and beginners as they scale their assessments

Common Pitfalls to Avoid

❌ Sending massive, complex spreadsheets nobody understands
❌ Requesting data suppliers don’t track
❌ Mixing years without documenting the difference
❌ Forgetting to standardize units
❌ Assuming one email will get a reply — follow-up is essential

Final Tip

Your first LCA is always the hardest. The second becomes dramatically easier when your data is structured, centralized, and easy to update — especially with transparent AI sustainability tools supporting your workflow.

Start Structured

Build a simple, repeatable data format from day one.

Scale Confidently

Use AI-assisted workflows in Sustainly to expand across products and teams.