A green hydrogen energy storage concept based on parabolic trough collector and proton exchange membrane electrolyzer/fuel cell: Thermodynamic and exergoeconomic analyses with multi-objective optimization

A systematic evaluation of adiabatic‐compressed air energy storage (A‐CAES) based on generating side photovoltaic: A case study on western China

“…Thus, the output characteristic we only concerned is the output capacity (W A-CAES ), which means how many electricity such an A-CAES can generate with the amount of compressed air and heat after charging process (Δm A-CAES ¼ 0, Δh A-CAES ¼ 0). The capacity can be described by Equation (6).…”

“…In the case study, annual output of a 2 MW PV plant is collected, and the plant is illustrated in Table 3. Importantly, the PV plant is located in western China Considering A-CAES has minute-scaled response time, and is proposed to use as energy load rather than response/power load, 6,11 the output was sampled every 15 min. However, this study focuses the capacity supply for grid, which field is A-CAES good at, rather than power supply or response characteristics, where other types of energy storage technology excels such as flywheel energy storage.…”

“…PV has received a lot of attention because of its easy installation and scalability 5 . However, PV cannot alone provide continuous, constant, and reliable power generation: only in the middle of sunny day can PV provide a reliable generation, while it cannot always meet the grid demand during the rest of the day and unsunny day 6 . Moreover, developing too much PV can result in excess power being generated in the middle of the day, leading to problem of curtailment 7 .…”

“…the day and unsunny day. 6 Moreover, developing too much PV can result in excess power being generated in the middle of the day, leading to problem of curtailment. 7 How to reduce the impact of uncertainties in power utilization, in combination with promoting clean PV power has become a worldwide focus.…”

Compressed Air Seesaw Energy Storage - a Solution for Long-Term Electricity Storage

“…However, there is no viable option for storing a significant amount of electrical energy in areas without mountains, except for converting electricity to other fuels (such as hydrogen or synthetic fuels) with low efficiency and high capital cost. Table 1 presents the specifications of mature energy storage systems [10,11]. This research makes the case that coastal regions near the deep sea can fill this gap with compressed air seesaw energy storage (hereafter called "Seesaw").…”