Neon Free Plan Storage Limit Reached (Writes Blocked)

How to fix it

Try these in order — the most common fix is first.

1. 1. Delete data and unused branches

   Copy steps
   1. Drop unused tables, truncate logs, delete old rows
   2. Delete unneeded branches in the Console (Branches)
   3. Run VACUUM FULL on bloated tables if needed
   Did this fix it? Yes No

2. 2. Upgrade to Launch

   Copy steps
   1. Billing in the Console, change plan
   2. Storage is then billed at $0.35 per GB-month
   Did this fix it? Yes No

Symptoms

INSERT and UPDATE fail while SELECT still works; Console warns about storage limit.

Why it happens

• Project data over 1 GB (Free)
• History window storage counts toward the limit
• Many branches each holding changed data

This guide also covers

• neon storage limit
• neon free plan 1gb limit
• neon cannot write database

The same problem in other apps

All plan limits, paywalls & watermarks guides →

• Supabase Edge Function 546 WORKER_LIMIT Error (Supabase)
• PlanetScale Transaction Pool Connection Limit Exceeded (PlanetScale)

Other Neon errors

• Neon Connection Timeout After Scale to Zero (Cold Start)
• Neon "Remaining Connection Slots Are Reserved" (Too Many Connections)
• Neon Compute Time Quota Exceeded (Free Plan Limit Reached)
• Neon Cannot Create Branch: Branch Limit Reached
• Neon Prisma or Drizzle Migration Fails (Pooled Connection)
• Neon SSL Required Error (Connection Is Insecure)
• Neon "The Endpoint ID Is Not Specified" / Password Authentication Failed
• Neon "Active Endpoints Limit Exceeded" / Compute Suspended