Volts
Investor Due Diligence Report
substackClimate
A newsletter, podcast, & community focused on the technology, politics, and policy of decarbonization. In your inbox once or twice a week.
93K
8.8K paid
+0.5%
Insufficient data
24 of 30 days needed
Pricing
$6/mo
$60/yr annual option
$42K
8.8K paid subs
$42K/mo – $42K/mo(±0%)
13.8
42.9
0.06%
(comments + likes) / subscribers
~2x per week
2.0 posts/week
84/100
Very Consistent (~3.7d avg)
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| HEATED | 140K | -0.3% | $8/mo | substack |
| The Crucial Years | 123K | +0.9% | $6/mo | substack |
| Energy Talking Points by Alex Epstein | 57K | N/A | $9/mo | substack |
| The Hotshot Wake Up | 32K | N/A | $6.99/mo | substack |
| Month | Subscribers | Est. Revenue | Change |
|---|---|---|---|
| Feb 2026 | 89K | $40,330.35 | — |
| Mar 2026 | 91K | $41,236.65 | +2.2% |
| Apr 2026 | 92K | $41,689.8 | ~0% |
| May 2026 | 93K | $42,142.95 | ~0% |
Platform Dependency
Uses substack platform
Publishing Consistency
Regular publishing schedule
Key Person
Single-author publication — key-person dependency
Audience Concentration
Consistent engagement across posts
Subscriber threshold
93K subscribers — above the 2K category median for first paid tier
Has paid tier
Active paid subscription offering
Peer monetization
100% of 4 similar-size peers in Climate have paid tiers
Pricing position
$6/mo vs $5.5/mo category median (185 newsletters)
| Date | Monthly | Annual |
|---|---|---|
| Mar 2026 | $6 | $60 |
Disclaimer: This report is generated automatically based on publicly available data and proprietary estimation models. Estimated subscriber counts are derived from engagement patterns and should be verified through direct disclosure. Revenue estimates are based on known pricing and estimated paid subscriber counts. This report is for informational purposes only and should not be the sole basis for investment decisions.
| Component | Score | Weight |
|---|---|---|
| Engagement Rate | 25/100 | 30% |
| Paid Subscriber Ratio | 100/100 | 25% |
| Growth Consistency | 98/100 | 15% |
| Publishing Consistency | 73/100 | 10% |
| David Gelles |
| 30K |
| N/A |
| Free |
| substack |
Revenue Model
Active paid subscription tier