Plan a continent, node by node.

CENovaSage decides what to build, where and when — generation, storage, transmission and flexibility — across decades of uncertainty, with reliability and N-1 security priced and screened inside the optimisation. The same engine forecasts the whole US grid nodally, every day.

Talk to us See runs on CEAtlas

20,000+ US nodes4,876 WECC buses1,623 ERCOT buses8,760 h full-year in-loop

What it does

One engine, two modes.

Expansion planning (CEM)

The optimal investment trajectory per scenario — builds, retirements, dispatch under each plan, nodal prices at the optimum — with reliability accreditation and contingency security inside the optimisation, not an afterthought.

Production cost (PCM)

The same nodal model over a fixed fleet: one real day or a rolling 96-hour window, solved chronologically and compared hub-by-hub against what actually happened.

Fully auditable

Duals, reduced costs, optimality gaps and certificates on every run; bit-exact replay; results rendered on the CEAtlas map with tidy CSV downloads.

For the quants

Why it scales where monoliths stall.

DecompositionThree-level nested Benders: investment master, parallel unit-commitment dispatch subproblems, N-1 screening — with a stabilised cutting-plane master.
Full-8760 dispatchAll 365 daily blocks stay in the master at true weight — never collapsed to representative days — made tractable by sampled cut sweeps, a build-per-visit subproblem pool and per-iteration checkpointing.
N-1 securityFast linear screening filters contingencies; violations enter as lazy cuts with a persistent active set. Security shapes the plan, not the appendix.
ValidatedWhole-US, WECC and ERCOT day runs graded against real market outcomes (western-US hub error measured in single-digit $/MWh); cross-model parity with open tools; 881 automated tests.
BenchmarksIEEE 24-bus expansion with N-1 in under a minute; IEEE 118-bus ten-scenario study inside 30 minutes; the first converged continental nodal expansion run with a certified gap.
InteropTOML configs, Parquet/Arrow tables, PyPSA import/export, MPS model export — and solver-agnostic: our CEMeridian engine or open/commercial backends, one config line apart.

See it before you licence it: solved runs — per-node prices, animated flows, unit dispatch, downloadable CSVs — are published on the CEAtlas map. Licensed access for your own studies.

Licensed access

Licensed to teams that plan systems.

Utilities, TSOs, developers and funds run CENovaSage under commercial licence — hosted or on your own infrastructure, with our engineers alongside for the first studies.

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