We publish what we use ourselves on assignments: data tracked over time, verification tools and sourced analysis of grid connection and data center projects in France. Each publication cites its sources and its date.

DATA AND INDEX

Tracked over time European Transformer Lead Time Index, Q3 2026 (PDF): power transformer lead times by manufacturer, updated each quarter
European Transformer Lead Time Index, Q2 2026 (PDF): the previous edition, for comparison
Power transformer lead times 2026, by manufacturer: our reference page on lead times

GUIDES AND TOOLS

To check and decide 20 questions to ask before committing to a site (PDF): the data center site verification checklist
How to choose a data center consulting firm in France: who does what, and eight questions to ask before signing
Grid connection glossary: exploratory study, PTF, connection agreement, queue, the 125% rules
Assignment examples: eight typical assignments, with deliverables and durations

REFERENCE ANALYSIS

Grid connection, regulation, territories Data center grid connection by region: Île-de-France, Hauts-de-France, Auvergne-Rhône-Alpes, Marseille and PACA, western France
Protecting a grid queue position: RTE and Enedis rules, the proposed reform and who decides the order of connection
The 7 GW Paris region queue: the connection funnel, figure by figure
Flexible data centers: can they connect faster?: what exists in France and what is being discussed in Brussels
Data centers and political risk in France, 2026-2027: elections, the moratorium debate, mapping the risk
France data center opposition tracker: local campaigns and legal challenges

All our analysis is collected on the blog. These publications are general information as of their date: they replace neither grid operator documents nor advice on a specific file.

FREQUENTLY ASKED QUESTIONS

Can I quote your publications?

Yes, citing GridReadiness and the publication date. Figures we take from other sources are always attributed to their author.

How often is the transformer lead time index updated?

Every quarter. The Q3 2026 edition is the latest.