Energy storage meter return rate

What is behind the meter energy storage?

Behind-the-meter energy storage has now taken over the installed capacity of utility scale storage with the largest growth seen in Korea, Australia, Japan, and Germany (IEA, 2019). It is expected that 70% of all renewable generation installed behind-the-meter will be paired with some level of energy storage over the next decade (Wilson, 2018).

How much does energy storage cost?

Assuming N = 365 charging/discharging events, a 10-year useful life of the energy storage component, a 5% cost of capital, a 5% round-trip efficiency loss, and a battery storage capacity degradation rate of 1% annually, the corresponding levelized cost figures are LCOEC = $0.067 per kWh and LCOPC = $0.206 per kW for 2019.

Why are energy storage systems important?

Energy storage systems (ESSs) can help make the most of the opportunities and mitigate the potential challenges. Hence, the installed capacity of ESSs is rapidly increasing, both in front-of-the-meter and behind-the-meter (BTM), accelerated by recent deep reductions in ESS costs.

Is energy storage a key to overcoming intermittency and variability?

Energy storage will be key to overcoming the intermittency and variability of renewable energy sources. Here, we propose a metric for the cost of energy storage and for identifying optimally sized storage systems.

What is the levelized cost of energy storage (LCOEs) metric?

The Levelized Cost of Energy Storage (LCOES) metric examined in this paper captures the unit cost of storing energy, subject to the system not charging, or discharging, power beyond its rated capacity at any point in time.

What is energy storage duration?

Duration, which refers to the average amount of energy that can be (dis)charged for each kW of power capacity, will be chosen optimally depending on the underlying generation profile and the price premium for stored energy. The economies of scale inherent in systems with longer durations apply to any energy storage system.