Modernizing interconnection for a reliable, flexible grid
As clean energy and large load reshape the grid, transmission and interconnection determine what actually gets built. Felix provides transparent, ISO-aligned insights that help developers, utilities, ISOs, and large energy users bring projects online faster — without sacrificing reliability.
Interconnection Capacity That Doesn’t Reflect ISO Reality
- Most vendors selling “injection capacity” are generating their results in a manner that is significantly misaligned with the way the ISO’s actually run their studies
- The implications of this are that you will see results that have no correlation with the network upgrades you’ll actually be assigned
ISO-Aligned Interconnection Studies
- Felix's injection studies replicate the exact study processes the ISOs use
- Felix was founded to bring more transparency to the market and reduce the number of "false positives" developers were chasing
Seasoned team built to solve the interconnection issue
Felix was built by transmission and interconnection experts who saw firsthand how approximate screening tools fail to reflect real ISO study outcomes. Our team combines deep transmission planning expertise with enterprise-grade software engineering to bring rigor and accuracy to interconnection decisions.
Built by Transmission Experts, Not Guesswork
Felix was founded by transmission experts to align early-stage interconnection screening with real ISO study outcomes by replicating ISO injection study processes.
2021
Founded by transmission planning experts
Prior work supported $1B+ in ISO upgrade savings
2022
Prospecting Launches
Coverage across MISO, SPP, and PJM
2023
Nationwide coverage
Early-stage capacity & cost intelligence
2025
Partnered with Energize Capital
Expanded support for Large Load, utilities & ISOs
Today
Proven Impact at Scale
Felix has modeled 500+ GW of interconnection studies for 100+ leading developers, uncovering over $3 billion in cost discrepancies to help customers optimize their projects.
Ready to De-Risk Your Next Project ?
Discover how ISO-accurate data and real-time modeling can help you screen faster, reduce upgrade risk, and make confident go/no-go decisions, before you ever submit to the queue.