Energy Storage
Energy storage is the process of capturing energy produced at one moment and releasing it later for use, typically using technologies such as batteries, pumped‑hydro, or thermal systems.
How Energy Storage Works
- Capture: When electricity is generated—e.g., by solar panels—excess power is diverted into a storage device instead of being wasted.
- Hold: The device keeps the energy in a stable form (chemical, gravitational, thermal) with minimal loss.
- Release: When demand rises or generation falls, the stored energy is converted back to electricity and fed to the grid or a home.
Why It Matters
Energy storage smooths out the mismatch between when power is produced and when it is needed. It:
- Reduces reliance on fossil‑fuel peaker plants.
- Increases the reliability of renewable‑heavy grids.
- Enables households and businesses to use self‑generated solar power after sunset.
A Concrete Example
A typical 10 kWh lithium‑ion battery can power an average Israeli household for about 24 hours of night‑time consumption (≈0.4 kW average load). On a larger scale, a 100 MW/400 MWh pumped‑hydro plant can store enough energy to run a small city for several hours.
Relevance to Solar Energy in Israel
Israel aims to reach 30 % solar electricity by 2030, which translates to roughly 4 GW of installed solar capacity. To make this target realistic, the country needs several gigawatt‑hours (GWh) of storage:
- Battery farms are being built near solar fields to store daytime output.
- Thermal storage in solar‑thermal plants can retain heat for up to 12 hours.
- Grid‑scale projects are exploring underground pumped‑hydro using Israel’s mountainous terrain.
With storage, solar power can be dispatched on demand, lowering electricity costs, cutting carbon emissions, and improving grid stability across the nation.
Bottom Line
Energy storage turns intermittent renewable generation into a dependable energy source, making solar power viable 24/7 and supporting Israel’s clean‑energy goals.