diff --git a/api/seed-health.js b/api/seed-health.js
index 970fe31a2..1b89801a3 100644
--- a/api/seed-health.js
+++ b/api/seed-health.js
@@ -66,6 +66,7 @@ const SEED_DOMAINS = {
   'economic:bigmac':          { key: 'seed-meta:economic:bigmac',          intervalMin: 5040 }, // weekly seed; intervalMin = maxStaleMin / 2
   'resilience:static':        { key: 'seed-meta:resilience:static',        intervalMin: 288000 }, // annual October snapshot; intervalMin = health.js maxStaleMin / 2 (400d alert threshold)
   'regulatory:actions':       { key: 'seed-meta:regulatory:actions',       intervalMin: 120 }, // 2h cron; intervalMin = maxStaleMin / 3
+  'economic:owid-energy-mix': { key: 'seed-meta:economic:owid-energy-mix', intervalMin: 25200 }, // monthly cron on 1st; intervalMin = health.js maxStaleMin / 2 (50400 / 2)
 };
 
 async function getMetaBatch(keys) {