Fulgur Ventures backs Voltage
4 Apr 2021
Fulgur Ventures
3 min
Voltage is the enterprise-grade infrastructure layer powering the Bitcoin Lightning Network, offering one-click hosted nodes, liquidity tooling, and APIs that let any business build, deploy, and scale Lightning applications without managing servers themselves.
Voltage and Lightning infrastructure
Every payment network in history has needed a layer that hides the complexity. Visa has its processors. The internet has AWS. Bitcoin's Lightning Network has Voltage. Founded in 2020 by longtime Bitcoiner Graham Krizek and headquartered in Wichita, Voltage has become the default cloud for teams who want to ship Lightning products without spending a year wiring up bitcoind, LND, watchtowers, and on-chain backups before they write a single line of business logic.
Enterprise-grade Lightning operations
Voltage offers enterprise-grade hosted Lightning and Bitcoin nodes that remain non-custodial: customers keep full control of their keys while Voltage handles uptime, scaling, channel management, and disaster recovery. The platform is now used by exchanges, wallets, fintechs, and miners to settle payments, and recently expanded with a USD-settled revolving credit line on Lightning. In January 2025, Voltage powered what was reported as the first publicly disclosed seven-figure Lightning transfer, a $1M payment between Secure Digital Markets and Kraken.
Why infrastructure matters
This kind of pragmatic, infrastructure-first work is exactly what we look for at Fulgur. Lightning will not be adopted by the world because individual companies each become protocol experts. It will be adopted because a small number of teams build the picks and shovels, and everyone else builds on top. Voltage is one of those picks-and-shovels companies, and Graham has approached the problem with the rare combination of deep Bitcoin conviction and serious cloud-engineering discipline.
The future of Lightning
As Lightning evolves into the settlement rail for stablecoins, AI agents, and machine-to-machine payments, the platform that makes nodes boring will be the platform that wins. We are proud to back Voltage as it works to put Lightning infrastructure behind every business on the planet.