Solid energy storage takes a different approach

What is solid gravity energy storage (SGES)?

Solid Gravity Energy Storage (SGES) SGES utilizes the same principles as all gravity energy storage systems. The distinction being solid GES uses solid materials, such as concrete. Large blocks of these heavy materials are raised and dropped vertically, storing, and releasing the gravitational potential energy.

Are solid gravity energy storage systems a viable alternative to pumped hydro energy storage?

In conclusion, solid gravity energy storage systems are emerging alternatives to pumped hydro energy storage systems. They have the means to address issues related to geographical adaptability and scalability. In the recent years, there has a surging interest in studying and building these systems.

Is solid gravity energy storage a viable alternative GES?

Although effective, a primary concern of PHES is the geographical constraint of water and longer term scalability. In this report, I will introduce solid gravity energy storage as an emerging alternative GES and explore a few primary systems. Mechanical Electrochemical Chemical Electrical Thermal Flywheel Batteries Hydrogen Superconducting

How many technical routes does solid gravity energy storage technology have?

Solid gravity energy storage technology has as many as eight technical routes. Although the technical routes are different, some essential features are the same. They can be summarized into two aspects: principle and equipment.

What is the cycle efficiency of solid gravity energy storage (SGES)?

The motor-generation unit is the energy conversion hub of solid gravity energy storage, which directly determines the cycle efficiency of solid gravity energy storage technology. The current efficiency of motor-generation units is about 90 %, so SGES's cycle efficiency is around 80 %.

What is a tower solid gravity energy storage system?

Tower Solid Gravity Energy Storage (T-SGES) Fig. 2:A diagram of the essential components of a tower solid gravity energy storage system (Image source: S. Blinkman). The T-SGES system, as depicted in Fig. 2, uses electromechanical motor-generation units to lift and stack blocks into a tower.