Juice Tank is a Second eraFrostbuilding supportbuilding. The Juice Tank card allows for a player to receive up to 66% more power from power wells through the course of a game. Building a Juice Tank close to a Power Well will make the power well consume 40% less energy. Therefore the power reserves of the power well sustain themselves longer. It's best used early on. At upgrade level 3, where the affected wells only use 40% energy, the amount of power they give is increased to 150% more than usual. Meaning a 900 power well with a tank since the moment it is built will end up providing 2250 power. Also, the tank gives 45 power back to the power pool if you sacrifice it after the wells it was working on are depleted, so in PVE this is quite the gamebreaking card. Best used in wells with 100+ power, thus allowing you to have a few (like 200+) extra power by the time when those wells would have been depleted for 3-4 minutes. Honorable mention: Siege of Hope's starting wells.