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Alternate Current
What it is
Alternate Current is a free Minecraft: Java Edition mod that changes how redstone dust calculates power and updates blocks. It groups connected wires into networks and spreads power from wires energized outside each network. Its update behavior is deterministic and less dependent on where a network sits, with the project aiming to retain high Vanilla parity while reducing server workload. The README says redstone dust contributes up to 20 times less MSPT with the mod. It also reports that a wire emits 24 block updates and 6 shape updates when its power changes, and network-level optimizations can reduce updates by up to 20%. Supported Minecraft versions and loaders differ by release; listed loaders include Fabric, Forge, NeoForge, Ornithe, and Quilt, and supported environments include server-side and singleplayer. The project is MIT-licensed, with source code, issue reporting, and a Discord server linked. Minecraft versions listed include 1.14 through 1.21.11, including specific 1.21 releases.
For and against
For
- Free and MIT-licensed.
- Deterministic network updates are less location-dependent.
- Supports server-side and singleplayer environments.
- Multiple loaders are listed across releases.
Against
- Loader and Minecraft-version support varies by release.
- The repository lists no security policy or published advisories.
The verdict
Alternate Current focuses specifically on redstone calculations and updates, with stated server-performance aims and multiple listed loaders. Compatibility depends on the particular game version and release.
Who it suits
It suits Minecraft: Java Edition players and server operators who want a redstone implementation focused on reducing power-calculation and update work. Check loader and game-version support for the release you plan to use.
Plans and prices
Alternate Current
MIT licensed Minecraft mod
Read 3 Oct 2026 · modrinth.com
On the record
- Compatibility limits
- Available Minecraft versions and loaders vary by release; CurseForge lists version-specific files for Fabric, Quilt, NeoForge, and Forge.curseforge.com · read 3 Oct 2026
- Distribution
- Modrinth links to the source repository, issue reporting, and a Discord server.modrinth.com · read 3 Oct 2026
- License
- The project is licensed under MIT.modrinth.com · read 3 Oct 2026
- Loaders
- Modrinth lists Fabric, Forge, NeoForge, Ornithe, and Quilt as supported platforms.modrinth.com · read 3 Oct 2026
- Network calculation
- It builds networks of connected wires and spreads power from wires receiving power from outside the network.github.com · read 3 Oct 2026
- Performance
- The README says redstone dust contributes up to 20 times less MSPT with Alternate Current while maintaining high Vanilla parity.github.com · read 3 Oct 2026
- Predictable updates
- The mod makes redstone network block updates deterministic and less dependent on location.github.com · read 3 Oct 2026
- Purpose
- Alternate Current is an efficient, non-locational redstone dust implementation that reduces lag by optimizing power calculations and block and shape updates.github.com · read 3 Oct 2026
- Reduced updates
- The README says each wire emits 24 block updates and 6 shape updates when its power changes, and network-level optimizations can reduce updates by up to 20%.github.com · read 3 Oct 2026
- Runtime
- Modrinth lists server-side and singleplayer as supported environments.modrinth.com · read 3 Oct 2026
- Security
- The GitHub repository has no detected security policy and no published security advisories.github.com · read 3 Oct 2026
- Supported game
- The project supports Minecraft: Java Edition, with listed versions spanning 26.3 through early Minecraft releases.modrinth.com · read 3 Oct 2026