Crypto Carbon Footprint List

The list below outlines how sustainable each of the top 100 cryptocurrencies are, where dark green is the most sustainable and brown is the least sustainable. The cryptos are ranked in order of how sustainable they are.

For ease of comparison, a VISA-transaction is equivalent to Medium Green, as it consumes approx. 0.003 kWh per transaction (0.4 grams of CO2e). The researchers do however acknowledge that many cryptocurrencies – contrary to VISA-transactions - function as value storage and is peer-to-peer rather than executed through multiple intermediaries.

The list has been developed by Cryptowisser.com in collaboration with a team lead by the Swedish sustainability expert Erik Florman, founder of Cleanblocks.io. Background information on cryptocurrency energy consumption, assumptions and qualifications for the report, and further details on how the data has been compiled and what metrics that constitute which grades etc., can be found at the bottom of this page. The aim is to update the below list on a monthly basis.

ALGO

Dark Green

Carbon Negative (Self‑reported)
Estimated Energy Usage

Pure Proof of Stake

Get Coin

AUDIO

Dark Green

Carbon Neutral (Self‑reported)
Estimated Energy Usage

Proof of Stake

Get Coin

AVAX

Dark Green

Carbon Neutral (Self‑reported)
Estimated Carbon Footprint

Proof of Stake

Get Coin

CELO

Dark Green

Carbon Negative (Self‑reported)
Estimated Carbon Footprint

Proof of Stake / Byzantine Fault Tolerance

Get Coin

EGLD

Dark Green

Carbon Negative (Self‑reported)
Estimated Carbon Footprint

Secure Proof of Stake

Get Coin

GMT

Dark Green

Carbon Neutral (Self‑reported)
Estimated Energy Usage

Hybrid Proof of Stake / Solana blockchain

Get Coin

SAND

Dark Green

Carbon Negative (Self‑reported)
Estimated Carbon Footprint

Proof of Stake

Get Coin

WAXP

Dark Green

Carbon Negative (Self‑reported)
Estimated Carbon Footprint

Delegated Proof of Stake

Get Coin

IMX

Dark Green

Carbon Negative (Self‑reported)
Estimated Carbon Footprint

ZK-Rollup (Validity Based Proof)

Get Coin

SOL

Dark Green

Carbon Neutral (Self‑reported)
Estimated Energy Usage

Hybrid Proof of Stake

Get Coin

HBAR

Dark Green

Carbon Negative (Self‑reported)
Estimated Carbon Footprint

Hashgraph Consensus

Get Coin

EOS

Dark Green

Carbon Negative (Self‑reported)
Estimated Carbon Footprint

Delegated Proof of Stake

Get Coin

NEAR

Dark Green

Carbon Negative (Self‑reported)
Estimated Carbon Footprint

Thresholded Proof of Stake

Get Coin

XTZ

Medium Green

Estimated Carbon Footprint

Proof of Stake

Get Coin

VET

Medium Green

Estimated Energy Usage

Proof of Authority 2.0

Get Coin

FTM

Medium Green

Estimated Energy Usage

Fantom Opera

Get Coin

XLM

Medium Green

Estimated Energy Usage

Stellar Consensus Protocol

Get Coin

IOTA

Medium Green

Estimated Energy Usage

Directed Acyclic Graphs

Get Coin

HOT

Medium Green

Estimated Energy Usage

Distributed Hash Table

Get Coin

XRP

Medium Green

Estimated Energy Usage

XRP Ledger Consensus Protocol

Get Coin

MATIC

Medium Green

Estimated Energy Usage

Proof of Stake

Get Coin

1INCH

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

AMP

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

ANKR

Light Green

Consensus Algorithm

Proof of Service Level, Proof of Stake, Byzantine Fault Tolerance

Get Coin

BNB

Light Green

Consensus Algorithm

Proof of Staked Authority

Get Coin

BTCB

Light Green

Consensus Algorithm

Delegated Proof of Stake and Practical Byzantine Fault Tolerance

Get Coin

BTT

Light Green

Consensus Algorithm

Delegated Proof of Stake / Tron

Get Coin

LINK

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

CHZ

Light Green

Consensus Algorithm

Proof of Authority

Get Coin

ATOM

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

CRO

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

DAI

Light Green

Consensus Algorithm

POSDAO Proof of Stake

Get Coin

FIL

Light Green

Consensus Algorithm

Proof of Storage

Get Coin

FLOW

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

FTT

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

GLMR

Light Green

Consensus Algorithm

Nominated Proof of Stake Ouroboros (babe)

Get Coin

ONE

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

ICX

Light Green

Consensus Algorithm

Delegated Proof of Stake / Byzantine Fault Tolerance

Get Coin

ICP

Light Green

Estimated Carbon Footprint

Internet Computer Protocol

Get Coin

IOTX

Light Green

Consensus Algorithm

Roll-Delegated Proof of Stake

Get Coin

KDA

Light Green

Estimated Energy Usage

Proof of Work

Get Coin

KAVA

Light Green

Consensus Algorithm

Proof of Stake / Ethereum & Cosmos

Get Coin

KLAY

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

KCS

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

KSM

Light Green

Consensus Algorithm

Nominated Proof of Stake

Get Coin

LPT

Light Green

Consensus Algorithm

Delegated Proof of Stake

Get Coin

LRC

Light Green

Consensus Algorithm

Ring Miners / Proof of Stake

Get Coin

MINA

Light Green

Consensus Algorithm

Proof of Stake (Ouroboros Samasika)

Get Coin

XMR

Light Green

Estimated Energy Usage

Proof of Work

Get Coin

NEO

Light Green

Consensus Algorithm

Proof of Stake (Practical Byzantine Fault Tolerance)

Get Coin

USDN

Light Green

Consensus Algorithm

Leased Proof of Stake / Waves blockchain

Get Coin

ROSE

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

OKB

Light Green

Consensus Algorithm

Delegated Proof of Stake

Get Coin

OMG

Light Green

Consensus Algorithm

Proof of Authority

Get Coin

CAKE

Light Green

Consensus Algorithm

Proof of Staked Authority

Get Coin

QTUM

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

SCRT

Light Green

Consensus Algorithm

Proof of Stake / Cosmos blockchain

Get Coin

LUNA

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

UST

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

TFUEL

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

THETA

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

RUNE

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

LEO

Light Green

Consensus Algorithm

Proof of Stake

Get Coin

WAVES

Light Green

Consensus Algorithm

Leased Proof of Stake

Get Coin

WBTC

Light Green

Consensus Algorithm

Proof of Authority

Get Coin

ZIL

Light Green

Consensus Algorithm

Proof of work (PoW) & Byzantine fault tolerance (pBFT)

Get Coin

DOGE

Light Green

Estimated Energy Usage

Proof of Work

Get Coin

DOT

Light Green

Consensus Algorithm

Nominated Proof of Stake (Ouroboros)

Get Coin

ADA

Light Green

Estimated Energy Usage

Proof of Stake (Ouroboros Praos Version)

Get Coin

TRX

Light Green

Consensus Algorithm

Delegated Proof of Stake

Get Coin

APE

Beige

Consensus Algorithm

Proof of Work

Get Coin

AXS

Beige

Consensus Algorithm

Proof of Work

Get Coin

BAT

Beige

Consensus Algorithm

Proof of Work

Get Coin

BSV

Beige

Consensus Algorithm

Proof of Work

Get Coin

COMP

Beige

Consensus Algorithm

Proof of Work

Get Coin

CRV

Beige

Consensus Algorithm

Proof of Work

Get Coin

DASH

Beige

Consensus Algorithm

Proof of Work

Get Coin

MANA

Beige

Consensus Algorithm

Proof of Work

Get Coin

XEC

Beige

Consensus Algorithm

Proof of Work

Get Coin

ENJ

Beige

Consensus Algorithm

Proof of Work

Get Coin

ETC

Beige

Consensus Algorithm

Proof of Work

Get Coin

ZEN

Beige

Consensus Algorithm

Proof of Work

Get Coin

HT

Beige

Consensus Algorithm

Proof of Work

Get Coin

MKR

Beige

Consensus Algorithm

Proof of Work

Get Coin

XEM

Beige

Consensus Algorithm

Proof of Importance

Get Coin

NEXO

Beige

Consensus Algorithm

Proof of Work

Get Coin

USDP

Beige

Consensus Algorithm

Proof of Work /Ethereum blockchain

Get Coin

QNT

Beige

Consensus Algorithm

Proof of Work

Get Coin

RVN

Beige

Consensus Algorithm

KAWPOW (Proof of Work)

Get Coin

SHIB

Beige

Consensus Algorithm

Proof of Work

Get Coin

SC

Beige

Consensus Algorithm

Proof of Work

Get Coin

VGX

Beige

Consensus Algorithm

Proof of Work

Get Coin

ZEC

Beige

Consensus Algorithm

Proof of Work

Get Coin

LTC

Beige

Estimated Energy Usage

Scrypt Proof of Work

Get Coin

BCH

Beige

Estimated Energy Usage

SHA256-Based Proof-of-Work

Get Coin

ETH

Beige

Estimated Energy Usage

Proof of Work

Get Coin

BTC

Brown

Estimated Energy Usage

Proof of Work

Get Coin

AAVE

N/A

Proof of Work

Get Coin

AR

N/A

Proof of Access

Get Coin

BUSD

N/A

Proof of Staked Authority

Get Coin

DCR

N/A

Proof of Activity

Get Coin

GALA

N/A

Triple Proof Node System

Get Coin

HNT

N/A

Proof of Coverage

Get Coin

STX

N/A

Proof of Transfer

Get Coin

USDT

N/A

Proof of Reserves

Get Coin

GRT

N/A

Proof of Indexing

Get Coin

TUSD

N/A

Proof of Work

Get Coin

UNI

N/A

Proof of Stake

Get Coin

USDC

N/A

Proof of Work

Get Coin