ShieldGrid is a NeoForge mod that adds placeable energy shield grid blocks to Minecraft. These blocks create protective shield areas around them, helping defend bases, machines, ships, and moving contraptions from outside threats.

The mod includes multiple shield tiers with different protection sizes and energy capacities, such as 9x9x9, 22x22x22, and 32x32x32 shield areas. Shields can block or bounce incoming projectiles like arrows, tridents, potions, ender pearls, ghast fireballs, and other thrown objects. They can also reduce or block outside explosions such as TNT and creepers, as long as the explosion comes from outside the protected area.

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ShieldGrid uses an energy-based durability system. Every blocked threat consumes energy depending on its strength. If a shield avoids damage for a short time, it begins regenerating energy. If its energy reaches zero, the shield temporarily shuts down and recharges after a cooldown.

The mod also adds a Shield Battery, which can be placed next to a shield to increase its maximum energy. Shields can be disabled with redstone without losing their stored energy, making them useful for controlled defensive systems.

ShieldGrid includes visual effects, impact sounds, shield tooltips, energy display text, spyglass overlay effects, and different shield states based on remaining energy. Elytra users can still pass through the barrier, but high-speed entry damages them.

Optional compatibility is included for **_Create Aeronautics / Sable_**, allowing shield areas to follow supported physics-based contraptions in real time. ShieldGrid also supports **_Create Big Cannons_**, making cannon shots bounce off the shield instead of simply disappearing.