Newsletter Insights — advertising rates and audience data for 40K+ newsletters
Browse all →Track Joule Thief's growth
Get notified when subscribers, engagement, or pricing changes
Platform Portability
Uses Substack subdomain (joulethief.substack.com). Migrating would require subscribers to re-subscribe at a new address.
Custom domains let newsletters switch platforms without losing their audience.
Are you a newsletter creator? Get verified insights →
the finance and business models driving clean energy.
Data updated 2 months ago
No posts found. Visit archive →
We don't have enough growth data for Joule Thief yet. The average Climate newsletter has 1K subscribers.
Based on 170 Climate newsletters tracked
Engagement Rate
0.00%
Climate category average
Quality Score
Engagement vs Climate
0.00%category median
vs 21 newsletters in Climate
200 places you in the bottom half of newsletters in this category.
Posts per Week
0.0
median: 1.0
Subscribers
200
median: 1K
Environmental Protection News
200 subs
0%/wk
The Other Emily Buchanan
200 subs
Wise Response
200 subs
Get email alerts when subscribers drop or spike, when new sponsors appear, when pricing changes, or when publishing cadence shifts. Track unlimited newsletters across your watchlist with the Starter plan.
$29/mo·cancel anytime
See what's includedGet the full whitespace list with each brand's category fit, audience overlap, and recommended pitch order. Plus a comparison of Joule Thief vs the top 15 peer newsletters on sponsor mix, growth, and CPM.
Including Another Tomorrow, ALIEN MODE, Hyundai + 52 more.
$300·2-3 working days·refunded if we can't deliver
Publishing Frequency
Unknown
Climate Pricing
$6/mo median
Your newsletter: Free
Monetization Readiness
Climate newsletters typically start charging at ~2K subscribers
10% of typical monetisation threshold
100% of similar-size Climate newsletters have paid tiers
Unlock revenue estimates, CPM benchmarks, and detected sponsors
Start tracking — free