Guarantees of origin, as granular as your consumption.
Annual certificates average away when your power was actually green. Granular certificates prove it per quarter-hour: which asset, which time slot, which delivery.
Annual certificates prove too little
Summer sun covers winter nights
A conventional GO from a sunny July afternoon can offset consumption from a windless winter night, on paper.
Stakeholders ask harder questions
Auditors, customers, and ESG ratings increasingly distinguish between annual averages and real, time-matched green supply.
No asset, no story
Unbundled certificates rarely tell you which plant produced your power. A credible claim needs a verifiable origin.
One certificate per quarter-hour
Granular certificates split the guarantee of origin into 96 daily time slots, each with a timestamp and a verifiable link to the producing asset. Granularity modeled on the EnergyTag standard.
96 quarter-hours per day, 96 certificates
Timestamped
Every certificate covers one quarter-hour, matching the delivery period it belongs to.
Asset-linked
Every certificate names the producing plant in Germany, verifiable instead of anonymous.
ESG attributes
Optional parameters like additionality (new build), technology mix, and CO₂ avoidance, ready for your reporting.
First with Green SPOT, then across the platform
Included with every delivery
Every quarter-hourly Green SPOT purchase comes with the matching granular guarantees of origin, power and proof in one transaction.
Discover Green SPOT Next stepRetroactive for 1-Click PPAs
Granular certificates are planned to cover 1-Click PPA deliveries retroactively, so your existing deals gain the same proof quality.
Discover 1-Click PPAExplore more of Otark
PPA Marketplace
Tender once, compare offers from 200+ vetted sellers, close digitally.
1-Click PPA
Standardized solar & wind PPAs, closed in under 60 minutes.
Green SPOT
Physical delivery incl. GOs, trade quarter-hourly for tomorrow (day-ahead).
Clearing & Settlement
Delivery, balancing group, GoO transfer, billing: Otark handles it.
Make your green claim provable
Granular certificates launch with Green SPOT in Q4 2026. Join the waitlist and be first in line.