Lightning Network Capacity
Total BTC locked in Lightning Network payment channels over time, measured in BTC. Reflects the network's liquidity available for routing payments.
What is it?
The Lightning Network is Bitcoin's primary Layer 2, designed for fast and low-cost payments. To use the network, participants open 'payment channels' by locking BTC into 2-of-2 multisignature contracts on the Bitcoin blockchain. This chart shows the total amount of BTC locked in these channels over time - a direct measure of the liquidity available on the Lightning Network for routing payments. The unit is BTC.
How to read
The Y-axis shows the total BTC locked in public Lightning channels, in BTC. A rising curve means more liquidity is deployed on the network (participants opening channels or increasing their size). A falling curve means channels are closing and BTC returns to Layer 1. Enable the BTC price overlay to observe whether capacity follows or diverges from price.
Key zones
Public Lightning Network capacity typically evolves within a range of several thousand BTC, spread across tens of thousands of public channels. Historical peaks have been reached at the top of bull cycles. A capacity in sharp contraction relative to the cycle peak marks capital leaving the layer; a new record marks an adoption surge. These figures only count public channels - actual capacity is estimated 30-50% higher (private channels).
What to observe
Compare capacity with BTC price (overlay available): if capacity rises while price is stable, it marks organic adoption. If capacity drops during a bull run, it may indicate operators closing channels to sell their BTC. Sharp capacity drops have historically coincided with on-chain fee spikes (Ordinals, Runes) that make channel opens/closes too expensive.
Historical context
The Lightning Network grew from a few dozen BTC in 2018 to several thousand at the top of bull cycles. Growth was driven by El Salvador adoption (2021), Cash App integration (2022), and rising volumes across subsequent cycles. Node count followed a similar trajectory, growing from a few hundred to tens of thousands. BTC-denominated capacity is a more reliable indicator than USD capacity which is biased by price changes.
Expert notes
Only public channels (announced via gossip protocol) are counted. Private (unannounced) channels, heavily used by mobile wallets like Phoenix and Breez, are not visible. The actual network capacity is therefore significantly higher. Data comes from mempool.space (AGPL license, API consumption authorized). Capacity is measured in BTC, not satoshis.
Common mistakes to avoid
Do not confuse capacity (BTC locked in channels = stock) with volume (BTC actually transacted = flow). Estimates of monthly Lightning volume significantly exceed static capacity. A capacity decrease does not mean 'Lightning is dying' - channels constantly close and reopen. Multi-Path Payments (MPP) allows routing payments larger than a single channel's capacity.
Programmatic access
REST API
curl -sS \
'https://api.trinityinsights.io/api/v1/onchain/btc-layer-distribution/history?days=90' \
-H 'X-API-Key: $TRINITY_API_KEY'MCP server
{
"tool": "get_chart_value",
"metric_id": "btc-layer-distribution",
"timeframe": "1y"
}Required tier: free. See the pricing grid for the tier list and the MCP documentation for multi-client configuration.
Related metrics
Institutional disclaimer
Trinity Insights is an educational and analytical tool. The metric above does not constitute investment advice. Trinity Insights is not a Crypto-Asset Service Provider (CASP) registered under MiCA Regulation (EU) 2023/1114. See the full disclaimer.