Gravity Battery
Gravity Batteries are 
structures that store Power (potential energy IRL) through an attached lifting weight above the ground. When the lifting weight is released, the resulting motion as gravity lowers it generates 
Power. There is no upper limit to the amount of instantaneous power available.
They are self-regulating, charging (lifting) when there is a surplus of network power, and generating (lowering) when there is insufficient network capacity.
Gravity Batteries can be paused in their current state at any time.
Construction
As Gravity Batteries are 4 units tall, 29 is the highest they can be constructed. The lifting weight also works in fluids without any additional resistance, as Timberborn does not include buoyancy. The lifting weight is stopped by the height of any structures under it, thereby reducing the storage capacity.
Gravity Batteries store 4,000 
hph when built on a flat surface where the lifting weight would stop at the same level as the structure's foot. 
Solid structures like 
Levees, 
Terrain Blocks and 
Platforms can be used to place Gravity Batteries at higher elevations. To maximize storage capacity, dynamite the area under the lifting weight to the bottom of the map.
hph is added to the capacity for every additional block underneath the lifting weight.Gravity Batteries are built with the lifting weight at its highest level, meaning they start fully charged. While it is possible to quickly deploy a source of Power by building a new battery as and when they are needed, such usage in a reactive or disposable manner is inefficient, considering the time taken to construct them, and the resource recovery deficit when demolishing them after the stored energy is depleted.
Power
The maximum storage possible is 62,000 hph at 29 levels of height below the foot of the building, when the battery is built at the highest possible height and the terrain underneath the lifting weight is at the lowest level of the map.
The total potential energy of Gravity Batteries is represented in hph (horsepower hours). A fully charged Gravity Battery with a 6,000 hph maximum capacity provides 6,000 for 1 hour, 12,000 for 30 minutes, or 3000 for 2 hours.
The power demand capacity can be calculated in advance by summing the total power deficit of the network, and multiplying it by the number of working hours in the day. For example, a network with a deficit of 700 for a 16-hour work schedule requires 11,200 hph per day from stored power. Additionally, calculating the amount of recharge energy available during the non-working part of the day predicts how long it takes for all batteries to discharge completely.
Achievements
The information below is true for the Experimental Branch only. If you want to check information for the Main Branch of the game, select the
Main Branch tab above! If there is no such tab, this feature is purely experimental.Power Around the Clock requires 13 Gravity Batteries at max build height.
Trivia
Several modern constructions utilize potential energy and gravity as a means of storing power. These include pendulum clocks, and pumped storage hydroelectric dams,
Gravity batteries with lifting weights as the rechargeable power source, as envisioned by Timberborn, are generally considered too inefficient in the reciprocal energy conversion to be commercially viable. As an example, the energy stored in a single AA battery (3 Wh) requires lifting 100 kg (220 lb) by 10 m (33 ft).
However, several exist:
- GravityLight is a failed attempt to use a bag of rocks to produce a reading light for third-world countries.
- Energy Vault achieves an approximate 75% round-trip efficiency when excluding wind issues. However, they have opted for using lithium-ion batteries in their projects in America.
History
