Insights
The standards, methods and thinking behind circular lighting.
Short reads from the workshop, the audit and the standards committees — written for the people making lighting decisions on real estates.
TM65: How to report on embodied carbon effectively
What CIBSE TM65 and TM65.2 measure, how they compare to EPDs, and how we use TM65.2 evidence in the Lighting Decision Audit.
Read article →TM66: Measuring whether a light fitting is actually circular
What CIBSE TM66 and CEAM-Make measure, how the circularity score works, and how the DfR Panel scores against it.
Read article →BS 8887-221:2024 — the standard for remanufactured lighting
What the first British standard for luminaire remanufacture covers, why it matters, and how EGG — a contributor to the standard — works to it.
Read article →BS 5266-1:2025 explained — what the emergency lighting revision changes
Wider scope, five-year photometric verification, and a heavier evidence burden — what the 2025 revision means for the responsible person.
Read article →The true conspiracy of planned obsolescence
Brian O'Reilly on where planned obsolescence came from, where it went wrong, and how designing for reuse and remanufacture puts it right.
Read article →Conversation, not tender
Start with a conversation.
No tender process required. No sales pressure. A straight answer about what your estate is worth.