#pixel $PIXEL Energy cryptocurrency
Cryptocurrency is a form of digital asset that operates based on blockchain technology, and this is the original purpose of its invention. Without a centralized authority, P2P cryptocurrency transactions can eliminate additional fees [88]. Therefore, cryptocurrency is extremely popular in international trade, as it is not affected by the exchange rate of any particular country [89]. The underlying blockchain technology also provides anonymity and privacy for cryptocurrency transactions [90].

Energy cryptocurrencies have been used as a means of payment in decentralized energy trading, whether in Bitcoin or in self-developed cryptocurrencies [69,70]. Furthermore, energy cryptocurrencies are likely to play an incentive role in next-generation energy systems. On one hand, producers can be rewarded for the production of green energy and consumers for sustainable usage behavior with cryptocurrencies [71]. On the other hand, cryptocurrencies can attract and encourage investments in renewable energy (for example, in solar panels) [72]. Therefore, energy cryptocurrencies have both financial and social value.