Explosive Yields Increased is a technology that can be researched at the Troop Center in Tech Level 4. It costs 300 Food and 450 Nova, and lets Grenade Troopers do double damage in double the area of attack. It is available to all civilizations except the Galactic Empire and Gungans.
This technology is extremely useful for any player that relies on Grenade Troopers. It benefits from being combined with Grenadier Training, which lets Grenade Troopers throw grenades 10% faster.
"This Tech Level 4 upgrade greatly increases the effectiveness of your Grenade Troopers, causing their explosive attacks to affect a much greater area."
—Manual description