Blockchain in the energy sector – how is this technology decentralising energy market?
Blockchain in the energy sector
Today, the energy sector is shifting from a model based on a few large power stations to a system in which energy is also generated by homes, businesses, solar farms, wind farms and local communities. In such a system, new methods of billing, flow control and verification of energy origin are required. This is where blockchain comes into play – a technology that can support a more transparent, automated and local energy market.
It does not replace the grid, substations or connections. Rather, it acts as a ‘digital layer of trust’: it records transactions, verifies data and facilitates settlements between market participants. That is why blockchain technology in the energy sector makes the most sense where distributed energy sources, prosumers, renewable energy and smart infrastructure are developing.
From consumer to active market participant
The traditional energy market operated in a one-way direction: energy was generated in large-scale facilities, transmitted via the grid and consumed by end users. Today, consumers are increasingly generating their own energy, using it for their own needs, storing it or feeding surplus energy back into the grid.
This is how energy prosumers – owners of micro-installations, most commonly photovoltaic systems – operate. In our article on prosumer and distributed energy generation, we explain that a prosumer is no longer merely an energy consumer. They are market participants who generate energy themselves – usually from renewable energy micro-installations – and then use it for their own needs. This model promotes local energy production, reduces dependence on distant sources and minimises losses incurred during long-distance transmission.
In this context, the decentralisation of energy trading involves moving away from a model in which all transactions must pass through a single central point. Energy can be settled closer to the point of production and consumption: for example, in a housing estate, an industrial plant, an energy cluster or a local microgrid.
How does trading between users work – P2P trading?
The most commonly described application of blockchain is peer-to-peer energy trading, i.e. the direct exchange of energy between a producer and a consumer. In this model, the owner of a PV system can sell surplus energy to another user on the same local grid, and the transaction is recorded on the blockchain.
P2P trading helps to manage multi-directional energy flows in renewable energy systems, and secure communication and cryptographically secured data storage are vital to the reliability of such solutions.
In practice, P2P energy trading can be based on smart meters, a trading platform and smart contracts. The measurement data obtained from such contracts indicates how much energy has been fed into the grid and consumed by system participants, whilst the smart contract executes pre-agreed settlement terms – for example, calculating the amount due based on the agreed price. As a result, blockchain in energy trading can reduce the number of manual administrative operations and minimise the risk of billing errors.
Transactions, certificates and tokenisation
In a decentralised energy trading model, reliable data is particularly important: how much energy was generated, when it entered the grid, who received it, and according to what rules it was billed. That is why blockchain can be used in electricity billing as a transaction ledger, in which every operation leaves a digital trace. Such a record facilitates auditing and verification of energy origin, as well as analysis of flows between system participants.
Blockchain technology is also linked to energy tokenisation. Put simply, this involves assigning a specific amount of energy or the right to use it to a digital token. Such a token may represent, for example, 1 kWh of energy from a specific renewable energy installation. This solution can support billing within local energy communities, but requires regulatory compliance, accurate metering and a stable data exchange system.
A different use case is verifying the origin of energy. Blockchain and renewable energy sources form a natural combination here, as consumers want clarity on whether the energy they are buying actually comes from renewables. A distributed ledger can help track certificates, though it does not itself solve legal, grid or organisational issues.
Energy infrastructure and blockchain
A digital platform is not enough if the grid is not equipped to handle multiple local energy sources. Decentralised energy trading requires efficient connections, reliable substations, automation, metering and telecommunications infrastructure.
Alterga builds energy infrastructure on a ‘design and build’ basis, and also carries out design, connection, modernisation and operational work. Its offer includes, amongst other things, substations, power lines, renewable energy sources, GIS services, thermal imaging, laser scanning and energy storage facilities.
The modernisation of energy infrastructure is also crucial for the development of local energy trading models. Networks designed primarily for one-way flow must be able to handle situations when energy flows from multiple points simultaneously. This applies particularly to areas where photovoltaic and wind farms are developing.
What infrastructure does the local energy market need?
Blockchain works best in a data-rich environment. This is why automation, communication systems and Smart Grid solutions are needed. These systems help to monitor energy flows, respond to overloads and manage renewable energy more effectively.
In local applications, energy microgrids are also a key component of the system. These are self-contained systems comprising energy sources, consumers, automation, storage facilities and a connection to the external grid. In such an environment, blockchain can support transactions between participants, but operational stability depends on the quality of the infrastructure.
The growing number of renewable sources also increases the importance of energy storage. Storage allows surplus energy to be utilised when production exceeds current consumption, and energy to be released when demand rises. Energy storage (given the variable nature of RES) supports grid flexibility and better utilisation of resources.
The scale of changes in Poland
The need for new billing models is not merely a theoretical concept. According to the Ministry of Climate and Environment, by the end of 2025, the share of renewable energy sources in Poland’s installed capacity stood at 50.04%, with the total capacity of renewable energy installations reaching 37,777 MW. Throughout 2025, renewable sources accounted for 31.41% of the country’s electricity generation.
The more energy comes from local and variable sources, the more important balancing, metering data and the security of energy transactions become. Blockchain can help with recording and verifying transactions, but it requires integration with meters, automation systems, operator systems and legally compliant billing procedures.
Physical components such as transformer stations, connections, protection systems and Grid Connection Points must also be taken into account. These enable the reception and transmission of power from larger renewable energy installations. Alterga offers the construction, reconstruction and modernisation of substations for various voltage levels, as well as work related to protection automation, commissioning and metering.
What are the potential benefits for the energy sector?
The greatest advantage of blockchain is transparency. Market participants can access a consistent record of transactions that cannot be easily altered without a trace. For local energy communities, this could be a way to achieve clearer billing.
The second benefit is automation. Smart contracts can reduce transaction processing times and cut down on administrative overheads. The third area is trust in data: energy origin, volume, delivery time and price.
This does not mean that blockchain will solve all the energy sector’s problems. Regulations, data exchange standards, cybersecurity, metering, a stable grid and experienced technical partners are still needed. The most realistic scenario is the gradual implementation of this technology in selected areas: local energy trading, renewable energy billing, certificates of origin and microgrids.
The energy sector of the future will be based on the integration of digital technologies with well-designed infrastructure. Blockchain can optimize billings and increase market transparency, but its effectiveness depends on the quality of the grid, metering, substations, connections and operational infrastructure. Therefore, the development of new energy trading models should be planned alongside technical investments that will prepare the system for a more local, flexible and resilient mode of operation.
FAQ – frequently asked questions about blockchain in the energy sector
This is the use of a distributed ledger to record, verify and settle data relating to energy production, sales and consumption.
Technically, it may support such a model, but its implementation depends on regulations, the network operator’s policies, metering and the billing platform.
It can facilitate the storage of surplus energy, transaction confirmation and automatic billing in local energy systems.
No. Blockchain handles data and transactions, whereas energy still requires physical infrastructure: power lines, substations, connections, security measures and metering systems.
Storage facilities help balance production and consumption, enabling local systems to make better use of surplus energy from renewable sources.
[1] https://www.nature.com/articles/s41598-024-72642-2
[2] https://www.gov.pl/web/klimat/polska-osiaga-50-mocy-z-oze–historyczny-przelom