Energy storage converts stored energy back to electricity at a later date, helping balance electric grid supply and demand, improve power quality and provide community resiliency.
Short-duration energy storage technologies are vital components of our clean energy future, enabling more renewable integration while mitigating price spikes for electricity consumers. By expanding their use, this will lead to cleaner power solutions in our energy grid and help prevent price increases for electricity consumers.
Adaptability
As with the phone you use every day, large-scale battery energy storage systems charge with cheaper electricity during off-peak hours, then discharge when demand spikes occur – this process is known as solar firming and may help lower high demand electricity prices (known as “price spikes”) for customers.
Other storage technologies in development, including compressed air, superconducting magnets and underground pumped hydro. Each storage technology offers different characteristics and applications; all store energy as heat or cold for later use.
Energy storage solutions can also provide remote communities far from the electric grid with greater resilience by helping them lessen their reliance on expensive, polluting fossil fuel power plants – helping reduce electricity costs in communities affected by pollution and climate change.
Resilience
Resilience can be defined in physical terms like material that returns to its original shape when bent or stretched, but resilience also refers to our capacity for healthy recovery from trauma or loss, not simply “bouncing back.”
Studies on resilience at both individual and system levels are becoming more numerous, with hope often serving as an underpinning of resilience despite chaos, violence, or stress.
Recognizing that successful indicators of resilience vary depending on each person’s personality, challenges, and environment is crucial when cultivating resilience in our children and youth. Therefore, efforts to do so should take these variables into consideration.
Intermittent Demand
Energy storage can alleviate the need for electricity generation to occur at exactly the right moment, for instance a solar array’s electricity could be stored up until nightfall or clouds obscure its sunlight.
Similar to your refrigerator in your home, energy storage devices allow electricity to be saved for later. Today, lithium-ion batteries are among the most widely-used forms of storage; however, other technologies like compressed air storage, superconducting magnetics and pumped hydro storage have emerged as viable options as well.
Integrating intermittent and non-intermittent renewables with different storage systems requires taking an integrative approach. This means evaluating integrated facilities (power production/energy storage), considering different input resources and storage alternatives over various timescales; economic and social evaluation is then completed using a specific indicator.
Renewable Integration
Storage is an integral component of an energy strategy, helping reduce curtailments of renewable energy generation. This can be accomplished by pairing or co-locating an on-grid energy storage system (ESS) with solar and wind plants and helping them respond more quickly to dispatch calls from electric grid operators.
Balancing Grid Supply and Demand and Enhancing Quality and Reliability
ESSs offer services to assist electricity providers in meeting supply-and-demand fluctuations on various timescales ranging from seconds to minutes or hours. Furthermore, they can enhance grid reliability by minimizing momentary spikes, surges, sags, or outages that damage electronics and appliances.
Battery energy storage systems can offer this service and can be combined with various generation resources to produce energy on demand.
Time-of-Use Pricing
At both residential and commercial levels, battery energy storage systems can assist electricity consumers with time-of-use pricing. By charging during low rate periods and discharging at peak pricing periods, these systems can bring significant cost savings.
Energy storage can maximize the value of renewable generation by providing electricity when production from wind or solar sources is limited, a process known as energy arbitrage.
Energy storage provides the ability to increase grid capacity and resiliency without building new infrastructure (wires). This is particularly valuable in remote rural communities, islands, or microgrids where transmission lines may not be feasible or available.