Description

About

GregTech Solar Expansion expands the solar energy branch of GTCEu Modern with a structured multi-tier progression from LV to ZPM.

Solar Panels do not simply generate a fixed amount of energy. Their actual production depends on environmental conditions such as sky access, time of day, weather, biome, and dimension.

The built-in GUI makes the system transparent: you can see stored energy, current generation, panel integrity, actual EU/t and amperage delivered to the network, as well as a detailed breakdown of every factor affecting production.

The mod is designed to fit naturally into GregTech progression while providing extensive configuration options for both regular players and modpack creators.

Features

Solar Panels from LV to ZPM
Solar Cells and Photoactive Layers with tier-based material progression
Dynamic solar generation affected by:
- Sky access
- Time of day
- Weather
- Biome
- Dimension
Fully redesigned Solar Panel GUI
Compact and Detailed display modes
Progress bars for:
- Stored Energy
- Generation
- Integrity
Real network output display showing actual EU/t and amperage
Configurable Base / Overdrive output modes
Detailed generation tooltips showing individual multipliers and final output
Color-coded multiplier feedback:
- White = 100%
- Green > 100%
- Orange = 1–99%
- Red <= 0%
4 module slots prepared for future upgrade mechanics
Full English and Russian localization
Integration with GTCEu harvesting rules

Configuration

GregTech Solar Expansion includes a built-in configuration screen:

Mods -> GregTech Solar Expansion -> Config

You can configure:

General solar generation conditions
Individual settings for every Solar Panel tier from LV to ZPM
Base and Overdrive output amperage for every tier
Biome generation multipliers and overrides
Generation multipliers for:
- Overworld
- Nether
- End
Custom dimension overrides
Identifiers from other mods and datapacks

Configuration changes are applied without restarting the world.

In multiplayer, gameplay configuration is server-authoritative:

Operators can edit gameplay settings
Other players automatically receive the current server settings in read-only mode

This allows solar progression and balance to be adjusted for individual worlds and modpacks without modifying the mod itself.

Requirements

Minecraft 1.20.1
Forge 47.4.0
GTCEu Modern 7.4.x or 7.5.x

Tested and verified on:

Minecraft 1.20.1 + Forge 47.4.0 + GTCEu Modern 7.5.x

Development Status

GregTech Solar Expansion is still in active development.

Planned future development includes:

Functional upgrade modules
Solar Panel degradation and Integrity mechanics
Further recipe and balance adjustments
Additional solar-related content

The current module slots, Integrity system, generation calculations, and configuration system provide the foundation for these mechanics.

Full Changelog

0.2.3

Release note

Version 0.2.2 was skipped; all changes prepared for it are included in 0.2.3.

Added

Built-in mod configuration screen available through Mods -> GregTech Solar Expansion -> Config.
Server-authoritative configuration editing and synchronization:
- Operators can change gameplay settings in multiplayer.
- Other players receive the current server settings in read-only mode.
Editors for general generation conditions, per-tier panel settings from LV to ZPM, biome overrides, and dimension overrides, including identifiers from other mods and datapacks.
Validation, Apply, Cancel, and Reset to Defaults controls for in-game configuration.
Separate configurable Base and Overdrive output amperage for every panel tier.
The selected output mode is stored independently for each Solar Panel and controls actual energy transfer.
Configurable generation multipliers for the Overworld, Nether, End, and custom dimensions.

Changed

Configuration changes now take effect without restarting the world.
Generation caches are refreshed automatically when configuration changes.
Stored energy is clamped when buffer capacity is reduced.
Generation now safely combines sky, time, weather, biome, dimension, module, and integrity multipliers, including bonuses above 100%.
Solar Panels now follow GTCEu harvesting rules and its requireGTToolsForBlocks setting:
- Wrench only by default.
- Wrench or Pickaxe when the setting is disabled.
Updated textures for Solar Panels, Solar Cells, and Photoactive Layers.
Updated the HV Photoactive Layer recipe:
- Fine Naquadah Wire replaced with Fine Niobium-Titanium Wire.
- Gallium Arsenide Plates replaced with Ultimet Plates.

Fixed

Fixed generation bonuses above 100% being ignored.
Fixed displayed combined percentages disagreeing with configured generation factors after integer EU/t rounding.
Improved dimension status reporting when generation is disabled by a non-positive multiplier or blocked by the sky-access check.

Localization

Added Russian and English text for the configuration screen, validation messages, Base/Overdrive modes, and dimension generation status.

0.2.1

Fixed

Solar Panel assembler recipes now correctly accept one of two soldering fluids through the #gt_solar:solar_soldering fluid tag:
- gtceu:tin
- gtceu:soldering_alloy
Fixed mod version substitution in META-INF/mods.toml:
- Switched from ${file.jarVersion} to ${mod_version}.
- Added processResources expansion in build.gradle.

Added

New fluid tag file: data/gt_solar/tags/fluids/solar_soldering.json.

0.2.0

Overview

This update introduces a completely new Solar Panel GUI and significantly expands generation telemetry and environmental logic.

The system now clearly shows real network output, generation factors, and per-block current limits, forming the foundation for future module and degradation mechanics.

Added

Completely redesigned Solar Panel GUI replacing the previous debug-style screen.
Aligned and reusable progress bars:
- Stored
- Generation
- Integrity, currently fixed at 100%
Compact / Detailed view toggle.
4 module slots in preparation for future module mechanics.
Output line showing actual EU/t and amperage delivered to the network.
Per-block current limit toggle (1A / 2A), saved in NBT.
Detailed generation breakdown tooltips for:
- Sky access
- Time of day
- Weather
- Biome
- Dimension
- Modules
- Panel Integrity
Color-coded multiplier indicators:
- White = 100%
- Green > 100%
- Orange = 1-99%
- Red <= 0%