Here's a list of 6 eco-friendly cryptocurrencies for 2021 . The most resilient cryptos for 2021 and their short descriptions can be found below with links to larger descriptions. This is not just a list - as the articles you will find were written in collaboration with the coin foundations and shared alongside them on social media . You can find links to the tweets in each relevant paragraph.
Let's get started!
Algorand's commitment to a sustainable blockchain


Main contribution: Carbon Negative and partnership with ClimateTrade.
- The Algorand Blockchain is secure and this security is achieved through the Pure Proof-of-Stake protocol, its innovation
- Pure PoS not only enables high transaction speeds, but also provides (but again with the security) sustainable energy consumption that limits environmental impact
- Algorand partnered with ClimateTrade . He also announced that the blockchain is carbon negative. How about that for eco-friendly crypto?
- ALGO can be easily accepted as payment or donation from environmentally aware merchants, mostly.
- Link to tweet with the article
Read more about Algorand's commitment to a sustainable blockchain
Ecological Nano Coin


Main contribution: 100% energy efficient (block-grid system) and no charge.
- The purpose of Nano project is "to make money work for a more equal world - easy to pay, easy to accept and open to all". Nano is fee-free, therefore it is fast.
- The team behind Nano coin has created 100% energy efficient system based on the block grid they developed. The Nano technology has eliminated the staking due to which much less power is consumed. Moreover, in Nano no yield so no energy is wasted.
- Nano works tirelessly to increase the efficiency and global reach of digital money around the world.
- Nano can be taken as payment or donation .
- Link to tweet with the article
Read more about Ecological Nano Coin
Blockchain Resilience with Hedera Hashgraph


Main conclusion: innovative alternative to PoW consensus, less electricity but higher performance
- Hedera's network is based on the innovative hashgraphy consensus developed by Dr. Leemon Baird, which represents a more efficient alternative to the proof-of-work consensus found for most ubiquitous public blockchains
- Hedera Hashgraph demonstrates its absolute superiority over proven-to-work blockchain platforms in terms of resilience
- Hedera Hashgraph uses much less electricity per transaction than Bitcoin or Ethereum, but manages to maintain performance that is exponentially higher
- HBAR can be adopted as payment or donation .
- Link to tweet with the article
Read more about Sustainability on blockchain with Hedera Hashgraph
Environmental sustainability of the Elrond network


Key takeaway: 6.24 million times more efficient than BTC
- Elrond can process 15 000 transactions per second. At the same time, the network consumes less electricity than PoW currencies.
- Elrond implements a Secure Proof-of-Stake protocol that leverages both high performance and resiliency.
- Elrond is 6.24 million times more efficient than Bitcoin
- You can always take payments under EGLD or EGLD donations .
- Link to tweet with the article
Read more about environmental resistance to Elrond Network
Environmentally sustainable Cardano


Key contribution: ADA cannot be mined, may be 37,500 times more energy efficient than BTC
- Cardano is also considered one of the most resistant to surrounding environment blockchains .
- Cardano's founder once said that the network uses only 6 GWh of power , therefore it is "balanced and sustainable ecosystem".
- According to this Reddit post Cardano may be 37,500 times more energy efficient than bitcoins.
- ADA is also considered for the third in terms of being the least "thirsty for energy".
- ADA cannot be mined, it is only staked (72% is currently staked), hence the low energy use.
- Cardano can be taken as payment or donation .
- Link to tweet with the article
Read more about Sustainable on Cardano environment
Harmony blockchain and sustainability


Import key: PoS, fast, cheap.
- Blockchain Harmony boasts very fast speeds and low fees.
- Harmony is based on a Proof-of-Stake protocol that allows it to keep the power consumption level low.
- The Harmony ONE Coin can be option for payment , also used for the reception of donations .
- Link to tweet with the article
Read more about Harmony blockchain & Sustainability