Running a Bitcoin Lightning Network full node in 2025 requires hardware that can handle both the Bitcoin blockchain and the Lightning Network's operations. Here's an overview of the ideal hardware specifications:

Minimum Requirements:

• Operating System: While Core Lightning, a popular Lightning Network implementation, supports Linux and macOS, Windows users can consider Docker for setup.
• CPU: A basic 1 GHz processor should suffice. We recommend a stronger CPU
• RAM: Aim for at least 4 GB of RAM for smooth operation. 8GB of RAM is recommended.
• Storage:
  • Full Bitcoin Core Node: We recommend around 1TB of storage to store the entire Bitcoin blockchain. We recommend using SSD drives. Given the blockchain's growth rate of about 100-150 GB per year, by 2025, it's prudent to allocate at least 1 TB of storage to accommodate future growth. 
  • Pruned Bitcoin Core Node: If you choose to run a pruned Bitcoin Core node, which stores only a portion of the blockchain, the storage requirement drops significantly to less than 5 GB.
  • Remote Bitcoin Core: Alternatively, you can connect your Lightning Network node to a remote Bitcoin Core node, eliminating the storage needs for the blockchain on your machine.
• Internet Connection: A reliable broadband internet connection with an upload speed of at least 400 kbps (50 kb/s) is essential. Ideally, a 100Mbps connection with 1 - 2TB of data transfer is fully enough, as full nodes can consume significant upload bandwidth (potentially over 200 GB per month on high-speed connections).

Changes Since 2023:

• Storage: The Bitcoin blockchain has been growing at a rate of approximately 100-150 GB per year. In 2023, the blockchain size was around 560 GB. By 2025, it's expected to exceed 800 GB, necessitating increased storage capacity.
• Bandwidth: With the network's growth, bandwidth consumption may have increased, making a robust internet connection more crucial.

Additional Considerations:

• Disk Speed: For a smoother experience, especially during the initial blockchain download, aim for a storage drive with a read/write speed of at least 100 MB/s. Solid State Drives (SSDs) are ideal for this purpose.
• Uptime: Bitcoin Lightning Network nodes are most beneficial when running continuously. Ensure your hardware is stable and reliable for extended periods.

Alternatives to Running a Full Node:

• Lightweight Nodes: If the hardware requirements seem daunting, you can consider running a lightweight Lightning Network node. These nodes connect to a full node for blockchain verification, reducing storage needs.
• Hosted Nodes: Several services offer hosted Lightning Network nodes, eliminating the need for you to manage the hardware yourself.