joulium.exchange
The curated B2B electricity marketplace for Austria. Ready to launch — market entry Q3 2026.
joulium.exchange is fully built and ready to launch: a curated marketplace for electricity trading between businesses in Austria. Producers and buyers trade directly with each other — per 15-minute window and per grid zone. Curated means: there is no open sign-up. Every counterparty is vetted before admission. You trade exclusively with businesses that have passed the same vetting process.
What joulium.exchange delivers.
Curated admission
No open sign-up. Every counterparty goes through a vetting process before admission — you trade exclusively with businesses that have passed the same process.
Auction-based price formation
Price formation happens via an auction per 15-minute window and per grid zone — not through bilateral negotiation between two parties.
Settlement against meter readings
Settlement is based on real meter readings, not letters of intent. What was actually delivered is the basis for settlement.
Everything in euros
All financial values run in euros — no secondary currency, no conversion, full compatibility with existing financial processes.
From admission to settled trade.
- 1
Vetting & admission
Every counterparty is vetted before admission — only vetted businesses gain access to the marketplace.
- 2
Bidding
Producers and buyers submit bids per 15-minute window and grid zone.
- 3
Auction & allocation
Price formation happens via an auction per window — the result is a fair, market-based price instead of a bilateral negotiation.
- 4
Delivery & settlement
Settlement is based on real meter readings, not letters of intent — all financial values in euros.
Built for businesses that want to trade electricity directly.
Producers
Direct access to vetted buyers, without anonymous intermediaries and with fair, auction-based price formation.
Buyers / industry
Predictable procurement per 15-minute window and grid zone, settled against real meter readings instead of estimates.
Energy utility / municipal provider
Access to a curated trading network of vetted counterparties as a complement to the existing portfolio.
JOU.App & Marketplace
For end customers and local energy communities we offer the JOU.App (app.joulium.de) as a dedicated white-label solution — complementing joulium.exchange at the business level.
Explore JOU.App →What prospects ask most often.
Can any business sign up?
No. joulium.exchange is curated — there is no open sign-up. Every counterparty is vetted before admission, so you trade exclusively with equally vetted businesses.
How is the price formed?
Via an auction per 15-minute window and per grid zone — not through bilateral negotiation.
What is settlement based on?
On real meter readings, not letters of intent. All financial values run in euros.
When does joulium.exchange launch?
joulium.exchange is fully built and ready to launch. Market entry in Austria follows in Q3 2026.
Ready for curated electricity trading in Austria?
joulium.exchange is ready to launch — market entry in Austria follows in Q3 2026. We are already taking prospects through the vetting process.