The green energy exchange for tomorrow
Buy 100% certified green power for the next day, quarter-hourly granularity, physical delivery, and Guarantees of Origin included. Fully digital.
Trusted by 350+ businesses across Europe
Green SPOT is a green energy spot exchange
Procure certified green electricity on the day-ahead market through a fully digital platform, with physical delivery and Guarantees of Origin included.
100% green power
Every MWh is certified green electricity from renewable sources. No greenwashing, no grey power.
Quarter-hourly granularity
Buy exactly the quarter-hours you need. Build any load curve for the next day with 96 individual quarter-hour slots.
Digital exchange
Trade on the same familiar interface as 1-Click PPA. No phone calls, no brokers, fully digital.
Daily auction for the next day
Daily auction
Submit your bids for 96 individual quarter-hour slots for the following day. Set volume and price limits for each quarter-hour.
Prices published
Quarter-hourly prices for the next day are determined. You receive confirmation of your matched trades immediately.
Physical delivery
Green power is physically delivered through Otark's balance group. Guarantees of Origin are transferred automatically.
Intraday (coming soon)
Intraday trading for short-term adjustments will be available in a future release. Stay tuned.
96 quarter-hour slots for the next day, each delivered with bundled guarantees of origin.
Short-term green energy without the complexity
Everything you need for green spot market procurement, in one platform.
100% green remaining power
All residual power procured through Green SPOT is 100% certified green electricity from renewable sources.
Any load curve
Flexibly procure any quarter-hourly load curve for the next day. Adapt your procurement to your actual consumption pattern.
Granular HKN included
Guarantees of Origin are bundled with every trade. Quarter-hourly granularity for maximum traceability and compliance.
Physical delivery
Power is physically delivered through Otark's balance group. No self-organized scheduling required.
Familiar interface
Trade on the same platform as 1-Click PPA. If you already use Otark, you're ready to go, no learning curve.
Germany-wide
Available across all German market areas. One platform for your entire green spot market procurement.
From sign-up to first trade
Sign up
Create your account on the Otark platform and complete the streamlined onboarding process.
Set preferences
Define your procurement volumes, price limits, and preferred trading parameters.
Place orders
Submit bids for the daily Day-Ahead auction before 11:00 for the next day's quarter-hour slots.
Receive power
Otark handles delivery via its balance group, daily settlement, and automatic HKN transfer.
Daily settlement, simple payment
Daily settlement
Trade execution
Otark Energy Services GmbH
Settlement & delivery
Payment
Buyer pays via SEPA B2B Direct Debit
Seller receives via SEPA Transfer
Otark Energy Services GmbH
As your single contractual counterparty, Otark Energy Services GmbH handles all settlement, delivery, and HKN management.
What makes Green SPOT different
| Traditional Spot | Green SPOT | |
|---|---|---|
| Energy source | Mixed (grey + green) | 100% certified green |
| Certificates | Decoupled (power & GoO separate) | Bundled (power + GoO included) |
| GoO granularity | Monthly | Quarter-hourly |
| Platform | Exchange access / external systems | Fully digital all-in-one platform |
| Settlement | Daily | Daily |
| Delivery | Self-organized | Otark balance group |
| Contract partner | Clearinghouse (CCP) | Otark Energy Services GmbH (single point of contact) |
| Onboarding | Weeks | Days |
Frequently asked questions about Green SPOT
When does Green SPOT launch?
Launch is planned for Q4 2026 in Germany. The waitlist is open: companies that join now are onboarded first and can trade from day one.
How is Green SPOT different from the classic spot market?
On the classic spot market you buy grey power and source guarantees of origin separately, usually only at monthly granularity. Green SPOT delivers 100% certified green power with bundled, quarter-hourly guarantees of origin, fully digital on one platform.
How does the daily auction work?
You submit bids for the 96 quarter-hour slots of the following day until 11:00, with volume and price limits per quarter-hour. At 11:30 the prices are fixed and you immediately see your matched trades. Delivery follows the next day.
Do I need my own trading desk or exchange access?
No. Green SPOT is fully digital and replaces exchange access, external systems, and phone trading. Onboarding takes days instead of weeks.
Who is my contract partner and how is settlement handled?
Your single contractual counterparty is Otark Energy Services GmbH. It handles settlement, delivery via the Otark balance group, and all GoO management. Settlement is daily; buyers pay via SEPA B2B direct debit.
What does the waitlist cost?
Nothing. Joining is free and non-binding. You secure early access and get onboarded before the public launch.
Does Green SPOT fit alongside my existing PPAs?
Perfectly: long-term PPAs hedge your base volume, Green SPOT covers the short-term remainder, hour by hour and fully certified. Your entire procurement stays green.
Still have questions?
Contact usReady for green spot trading?
Join the Green SPOT waitlist and be among the first to trade certified green power on the day-ahead market.