The Imperative for Energy Storage

Written SH on 2025-01-13.

Tagged fow25 energy

In recent years, the global shift towards renewable energy sources has gained significant momentum. This transition is driven by the urgent need to mitigate climate change and reduce dependence on finite fossil fuels. However, the integration of renewable energy into the grid presents unique challenges that must be addressed to ensure a stable and reliable energy supply.

Renewable Energy Generation: Predictable but Not On Demand

One of the primary challenges of renewable energy generation is its inherent variability. While the output of renewable sources such as solar and wind can be predicted with a reasonable degree of accuracy, they cannot be controlled on demand. Solar panels generate electricity only during daylight hours, and wind turbines are dependent on wind speeds, which can fluctuate unpredictably. This variability poses a significant challenge for grid operators, who must balance supply and demand in real-time to maintain grid stability.

Peak Energy Needs and Lower Renewable Output

A further complication arises from the fact that times of peak energy demand often correlate with periods of lower renewable energy output. For instance, energy demand typically peaks in the evening when people return home from work and use appliances, lighting, and heating. However, this is also the time when solar energy production is at its lowest, as the sun has set. Similarly, wind speeds can be lower during peak demand periods, exacerbating the supply-demand imbalance.

Diversification of Renewable Energy Sources

To mitigate the challenges posed by the variability of renewable energy generation, it is essential to diversify both the methods and locations of energy production. By employing a mix of renewable sources such as solar, wind, hydro, and geothermal, the risks associated with the intermittency of any single source can be spread. Additionally, geographical diversification can help smooth out variations in output. For example, if wind speeds are low in one region, they may be higher in another, allowing for a more balanced overall supply.

By 2030, the plan is for this to be less of a problem -- to decarbonise the grid, while moving away from a gas back-up. This will involve trebling wind capacity. That’s ambitious, but we know how windfarms work. It will also involve, if we are to not rely on gas, developing storage: to hold energy in the windy times and put electricity back in when it’s calm. That’s a lot harder.
Whipple, T., 2025. Power blackout? We didn’t come close — but it was a warning for UK. online.

The Critical Role of Energy Storage

Given the intermittent nature of renewable energy generation, energy storage solutions are indispensable. Energy storage systems can capture excess energy produced during periods of high renewable output and release it during times of peak demand or low generation. This not only enhances grid stability but also maximises the utilisation of renewable energy resources.

Various energy storage technologies are being developed and deployed, including:

  1. Battery Storage: Lithium-ion batteries and other advanced battery technologies can store energy efficiently and release it quickly when needed.
  2. Pumped Hydro Storage: This method involves pumping water to a higher elevation during periods of excess energy production and releasing it through turbines to generate electricity during peak demand.
  3. Hydrogen Storage: The production of green hydrogen through electrolysis at peak renewable generation to then be stored and later used to generate electricity.
  4. Compressed Air Energy Storage (CAES): This technology compresses air and stores it in underground caverns, releasing it to drive turbines and generate electricity when required.
  5. Flywheel Energy Storage: Flywheels store energy in a rotating mass and can release it rapidly, making them suitable for short-term energy storage needs.

In conclusion, while renewable energy generation presents unique challenges due to its variability and the mismatch between peak demand and output, these obstacles can be overcome through diversification and the implementation of advanced energy storage solutions. By investing in a diverse portfolio of renewable energy sources and robust storage technologies, including green hydrogen, we can ensure a stable, reliable, and sustainable energy supply for future generations. The path to a greener future is within reach, but it requires strategic planning, innovation, and a commitment to overcoming the inherent challenges of renewable energy integration.

Explore Tomorrow's Potential

TPEX Futurism Consultancy helps businesses foresee risks and opportunities ahead. Our crystal-clear insights prepare you for what's next, ensuring your business stays ahead of the curve.

I'm ready to future-ready my business!

References

Whipple, T., 2025. Power blackout? We didn’t come close — but it was a warning for UK.URL.

About TPEX

TPEX offers future imagining and tenth person consultancy for decision makers looking to consider the future, before opportunities are missed. We offer online and in-person consultancy to help your business make informed decisions about the future.