CarbonBridge Testnet is live

Discover, verify, and bridge real-world carbon tokens.

CarbonBridge connects renewable energy devices to on-chain carbon tokens and NFT carbon certificates. Every kWh measured, tokenised and retired – with cryptographic provenance across chains.

Live oracle: CO₂ price synced

24,310+ tCO₂ tokenised

3 Chains Private & public EVM

100% Device-verified data

Recent Carbon Bridges

End-to-end, auditable flows from device to NFT.

Live feed

From Rooftop Solar – Sydney Minted on private chain → Polygon PoS

4.2 tCO₂ Offset & NFT issued

From EV Charger – Council Depot Ergon & Carbon tokens synced

1.1 tCO₂ Retired on-chain

From Community Wind Farm Batch-bridged with zk-proofs

9.8 tCO₂ Verified for SME bundle

From Grid-scale Battery Hourly energy data streamed

2.6 tCO₂ Pending retirement

Top Integrators

Devices and partners streaming verified renewable energy into CarbonBridge.

View all

Solar Rooftop Fleet 42 devices · NSW

12,440 tCO₂ bridged

EV Depot Network Council charging hubs

4,320 tCO₂ bridged

Wind Farm Cooperative Community-owned assets

3,210 tCO₂ bridged

Battery + Green Tariff Peak-shaving program

2,045 tCO₂ bridged

Campus Solar Array University microgrid

1,608 tCO₂ bridged

Featured Bridge Flows

Explore example end-to-end lifecycles: device → tokens → proof → NFT → retirement.

Auditor-ready views

Solar → Polygon

Sydney Solar Rooftops

Bundle volume
3,500 tCO₂

Device count
120

Lifecycle completed with zk-proof of origin and on-chain retirement. Verified

EV → zk-L2

Council EV Fleet Charging

Bundle volume
940 tCO₂

Time span
Q1 2025

Off-chain matching, on-chain settlement, tamper-proof charger logs. Pilot

Wind → NFT

Community Wind Cooperative

Bundle volume
6,120 tCO₂

Certificates
612 NFTs

Per-MWh NFT carbon credits with royalty-enabled secondary market. Live

Battery → Bridge

Grid Battery Flex Program

Bundle volume
1,050 tCO₂

Granularity
15-min slots

Dynamic pricing oracle updates token burn cost in real time. In beta

How CarbonBridge Works

A deterministic, cryptographically verifiable lifecycle from renewable energy measurement to retired carbon certificate.

1. Measure & Sign

IoT devices stream signed kWh data into a private EVM chain.

Each reading is linked to a whitelisted device wallet, preventing spoofing.

2. Mint Ergon & Carbon Tokens

Energy is converted into Ergon (kWh) and Carbon (tCO₂) tokens via audited formulas.

Only authorised devices can mint – no “paper offsets”.

3. Prove & Bridge

Zero-knowledge proofs show that private-chain burns match public-chain mints.

Tokens are bridged to public networks without exposing sensitive device data.

4. Mint & Retire NFTs

Carbon credit certificates are minted as NFTs and can be traded or retired.

Retirements are permanent and auditable, eliminating double-counting.