What is advanced rail energy storage?

Advanced Rail Energy Storage (ARES) uses proven rail technology to harness the power of gravity, providing a utility-scale storage solution at a cost that beats batteries. ARES’ highly efficient electric motors drive mass cars uphill, converting electric power to mechanical potential energy.

Can battery-based energy storage improve peaking capacity in Bulgaria?

storage can also ofer greater flexibility and eficiency in managing the grid. Furthermore, and although hydropower storage already makes up a significant source of peaking capacity in Bulgaria, battery-based energy storage can address peaking needs during times of droughts, meet requirements for more distributed peaking po

Why do we need energy storage solutions in Bulgaria?

ablish a reliable energy system with greater share of intermittent generation. In the context of Bulgaria’s energy landscape, energy storage solutions present a diverse array of benefits to various stakeholders stemming fro its unique ability to time-shift energy and rapidly respond when called upon. The applic

Is a peaking plant a viable alternative for Bulgaria's peaking capacity needs?

ctive and fast-responding alternative for Bulgaria’s peaking capacity needs. With limited natural gas reserves and uncertain costs for imported energy, storage can provi e a reliable source of power during peak demand periods on the Bulgarian grid. Compared to traditional peaking plants

How does rail-based gravity storage work?

Similar to hydro, ARES uses the potential mechanical energy available due to gravity. The figures below demonstrate how rail-based gravity storage works, at a basic level. Figure 1: Electricity is pulled from the grid to turn a highly efficient electric motor lifting a heavy mass car uphill.

What types of energy can be stored in a rail-based gravity storage system?

Energy can be stored in many forms such as chemical energy (batteries), thermal energy (heat), kinetic energy (flywheels) and potential mechanical energy (hydro). Similar to hydro, ARES uses the potential mechanical energy available due to gravity. The figures below demonstrate how rail-based gravity storage works, at a basic level.