One home for building, shipping, and licensing TRNSYS.
Everything the people who make TRNSYS touch — source, releases, and licenses — in one place. Sign in once; it's all here.
Develop
The forge for the core team — issues, reviews, and a working dev environment in one step. One repo, not eight.
Open issues →Releases
Every version of TRNSYS, composed and published from here. What trn pulls — pinned and reproducible.
Licensing
Issue, track, and revoke licenses ourselves — no third party in the middle. Built for how TRNSYS is actually sold.
Manage licenses →Account
Who you are and who's on the team. Passkeys, SSO, roles for TESS, Isentropic, CSTB and Transsolar.
Account & team →This is a sketch of the shape, not the final look. The buckets are the proposal — argue with them.
Develop
The bespoke forge for the small group of people who build TRNSYS. Track work, review changes, and get a working environment — one place, one repo behind it all.
Spin up a CoreDev environment
One clone — everything's in it. Kernel, engine, and types together; Visual Studio + Intel Fortran ready to F5 into a kernel breakpoint. The thing that used to take a day.
Issues & pull requests
Releases
Bundled TRNSYS distributions, composed and published from here. This is the source of truth for what
trn installs and updates — reproducible down to the component version.
v19.0.0-alpha.13
latest| Component | Version | Source | Platforms |
|---|---|---|---|
| kernel | 0.4.0 | TESS | win-x64 macos-arm64 |
| engine | 0.3.3 | TESS | win-x64 macos-arm64 |
| standard-types | 0.3.0 | TESS | win-x64 macos-arm64 |
| fluid-properties | 0.2.1 | TESS | win-x64 macos-arm64 |
| solar-calcs | 0.2.0 | TESS | win-x64 macos-arm64 |
| trnexe | 0.3.4 | Isentropic | win-x64 macos-arm64 |
| Studio | 2026.1 | CSTB | win-x64 |
| TRNBuild · Type56 | 2026.1 | Transsolar | win-x64 |
Release history
Licensing
Issue and manage TRNSYS licenses ourselves — no Keygen, no third party holding the keys to our product.
trn talks straight to here.
Issue a license
Pick an org, seat count, and term. A signed license lands in their trn on next launch — nothing to email, nothing to copy-paste.
Active licenses
| Organization | Kind | Seats | Term ends | Status |
|---|---|---|---|---|
| TESS | CoreDev | 12 | perpetual | active |
| Transsolar | CoreDev | 8 | 2027-01-01 | active |
| CSTB | CoreDev | 6 | 2027-01-01 | active |
| Aalborg University | Regular | 40 | 2026-09-30 | active |
| NREL | Regular | 25 | 2026-12-31 | active |
| Arup | Regular | 30 | 2026-07-15 | renewing |
| Solar Lab GmbH | TypeDev | 7 | 2026-08-01 | active |
Account & team
Who you are, how you sign in, and who's on the team. One identity across the forge, releases, and licensing.