Attestenergydata.Permanently.On-chain.

The open standard for on-chain energy data. Built on the Ethereum Attestation Service, EnergyAS lets any energy project attest production or consumption data permanently on-chain.

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ProjectSolar Farm #0042
Energy TypeSolar PV
Readings48 intervals
Total1,247.8 kWh
MethodIoT
Status Attested on-chain

Supported by an ETH For The World grant

0
Attestations Submitted
0B
Total kWh Attested
0
Active Projects
0
EVM Chains Supported

How It Works

Three steps to permanent, verifiable energy data on-chain.

Step 1

Register as a Watcher

Any wallet calls registerWatcher(name). No approval needed, no KYC — fully permissionless onboarding.

Step 2

Register Your Projects

Add generator or consumer projects under your watcher. Each project gets a unique on-chain identity.

Step 3

Attest Energy Readings

Submit cryptographically signed, on-chain energy readings in Wh. Data is permanent and auditable by anyone.

Built for Real-World Energy

From tokenization to carbon credits — EnergyAS provides the verifiable data layer for the entire energy value chain.

DeFi Protocols

Energy Project Tokenization

Tokenize generation assets backed by verified on-chain data. Create liquid markets for energy infrastructure.

Regulators & Compliance

Energy Consumption Certification

Certify a facility’s consumption record for regulatory compliance with immutable on-chain proofs.

Auditors & Verifiers

Carbon Footprint Measurement

Calculate real emissions from verified consumption attestations. Ground truth for carbon accounting.

Carbon Markets

REC Issuance

Issue Renewable Energy Certificates backed by on-chain generation proofs. Verifiable at the source.

Carbon Markets

Energy-Based Carbon Credits

Issue carbon credits tied to verified renewable generation. Transparent, auditable, and permanent.

Developers

Open Energy Standard

A common schema for any future on-chain energy application. Build on a shared foundation.

Architecture & Trust Model

Built on battle-tested infrastructure. Every layer is designed for transparency and permanence.

Ethereum Attestation Service (EAS)
Permissionless protocol for making and verifying on-chain statements.
SchemaRegistry
Registers the data structure all energy attestations follow.
EAS Resolver
Custom contract that validates attestation business logic.
EnergyAS Protocol
Permissionless, multi-tenant on-chain energy reporting.

Permissionless

No gatekeepers. Any wallet can participate from day one.

Permanent

On-chain data cannot be altered or deleted. Ever.

Verifiable

Anyone can audit energy totals by project, watcher, or energy type.

Ecosystem

Energy projects already attesting on-chain with EnergyAS. Explore their data — every reading is public.

Helios Grid
Utility-scale solar across Southern Europe
14
Projects
840M kWh
Attested
Solar PV

Helios Grid operates 14 solar PV farms across Spain and Portugal, attesting generation data every 30 minutes via IoT-connected inverters. Their on-chain track record backs a tokenized solar fund open to institutional investors.

View attestation dashboard

A Clean Foundation for Energy Data

A clean schema, permissionless access, and comprehensive documentation. Start building on EnergyAS in minutes.

Attestation Schema

uint64 projectId, uint32 readingCount, uint32 readingIntervalMinutes,
uint256[] readings, uint64 fromTimestamp, string method,
uint8 energyType, string metadataURI
View on GitHub Documentation

Technical Highlights

Fully Permissionless
No central gatekeeper, no KYC. Anyone can register and begin attesting.
Multi-Tenant Isolation
Complete tenant isolation — Watcher A cannot interfere with Watcher B.
Duplicate Period Detection
On-chain logic prevents double-counting of energy readings.
Per-Project Attester Whitelisting
A compromised IoT device only affects a single project, not the whole system.
Batch Reporting
Submit many readings in one transaction via EAS multiAttest().
Optional IPFS Metadata
Anchor audit PDFs, IoT exports, or certifier addresses per attestation.
Emergency Pause
Resolver can be paused without affecting revocations.
Future-Proof Architecture
Registry is permanent, resolver is replaceable — clean upgrade path.
152 Tests
Comprehensive test coverage across the entire protocol.

Deploy on Any Chain

Built on the Ethereum Attestation Service, EnergyAS can be deployed on any chain where EAS is available.

EVM Compatible

Anywhere EAS is deployed, EnergyAS works. Ethereum, L2s, sidechains — your choice.

Get Started with EnergyAS

Whether you want to explore on-chain energy data or build on the protocol — there is a path for you.

Explore the Data

Browse on-chain energy attestations by watcher, project, or energy type. All data is public and verifiable — no account needed.

Open Dashboard

Coming soon

Start Building

Register a watcher, submit your first attestation, and build on verified energy data. Full documentation with step-by-step tutorials.

Quick Start Guide