Tackling wind waste

The UK's ambition for renewable energy is clear, with wind power central to its green transition. Yet, a significant challenge known as wind waste often prevents this clean energy from reaching homes. This isn't an inherent flaw of wind energy itself, but rather a symptom of an outdated energy system struggling to keep pace with modern generation.

Understanding wind waste helps to highlight inefficiencies in the current energy system. At Fuse Energy, we're working to build a future where clean energy is abundant and affordable for your home. Click here to switch to Fuse Energy today.

Understanding wind waste: curtailment and material challenges

Wind energy is sometimes wasted in two primary ways: through curtailment, where operational wind farms are instructed to reduce output, and through the physical waste generated by end-of-life turbine components. Both represent significant challenges to a truly sustainable energy future.

Defining wind curtailment

Wind curtailment occurs when operational wind farms are instructed to reduce or stop generating electricity, even when the wind is blowing and they are capable of producing power. Grid operators issue these instructions primarily to maintain the stability of the electricity network. This happens when the grid cannot safely transmit the generated power from where it's produced to where it's needed, or when supply temporarily outstrips demand.

Causes of wind curtailment

Several factors contribute to wind curtailment in the UK:

• Grid congestion: The existing transmission infrastructure, often built for a centralised fossil fuel system, struggles to cope with the influx of decentralised renewable energy, particularly from remote wind farms. Bottlenecks occur when more electricity is generated than the local grid can handle or transport.
• Lack of demand: At certain times, especially during periods of low consumption (e.g., late at night) combined with high wind speeds, the amount of electricity generated by wind farms can exceed the immediate demand on the grid.
• Grid stability issues: To maintain a stable frequency and voltage, grid operators need to balance supply and demand precisely. Intermittent sources like wind can make this challenging, sometimes requiring curtailment to prevent system overload or instability.
• Maintenance and upgrades: Planned or unplanned maintenance on transmission lines or substations can temporarily reduce the grid's capacity, leading to curtailment in affected areas.

The impact of curtailment on energy abundance

Wind curtailment has far-reaching consequences, undermining the UK's pursuit of energy abundance:

• Financial losses: Wind farm operators are often compensated for curtailed energy, which ultimately adds to consumer bills. This represents a significant cost for electricity that was never used.
• Reduced investor confidence: The economic viability of new wind projects can be negatively impacted if a substantial portion of their potential output is regularly curtailed, deterring future investment in renewable generation.
• Missed decarbonisation targets: Wasting clean energy means a greater reliance on fossil fuels to meet demand, slowing down the transition to a net-zero economy.
• Public perception: The idea of "wasted wind" can erode public trust in renewable energy, making it harder to gain support for further development. A modern onshore wind turbine, for instance, can produce enough electricity for around 1,700 average UK homes annually, with the average UK home consuming approximately 2,700 kWh per year1. Curtailment means this potential is not always realised.

The challenge of turbine blade waste

Beyond curtailment, the physical components of wind turbines, particularly the blades, present another form of wind waste at the end of their operational life. Made from composite materials like fibreglass and resin, these blades are notoriously difficult and expensive to recycle. Many currently end up in landfill, posing an environmental challenge as the first generation of turbines reaches decommissioning age. Developing scalable and sustainable recycling solutions is critical for the long-term environmental footprint of wind energy.

Solutions for a more efficient grid and sustainable future

Addressing wind waste requires a multi-faceted approach, focusing on modernising the energy system and integrating renewables more effectively.

Grid modernisation and infrastructure upgrades

Investing in new, smarter transmission and distribution infrastructure is paramount. This includes:

• Reinforcing the grid: Upgrading existing power lines and building new ones to increase capacity and reduce bottlenecks, especially in areas with high wind generation potential.
• Smart grid technologies: Implementing advanced digital technologies that allow for real-time monitoring, control, and optimisation of electricity flow, enabling the grid to respond dynamically to supply and demand fluctuations.
• Interconnectors: Building more subsea cables to connect the UK grid with neighbouring countries, allowing excess wind power to be exported and imported as needed.

Energy storage solutions

Large-scale energy storage is a game-changer for managing intermittent renewable generation:

• Batteries: Deploying grid-scale battery storage systems can store excess wind energy during periods of high generation and release it when demand is high or wind speeds are low.
• Pumped-hydro storage: Utilising existing or new pumped-hydro facilities to store energy by pumping water uphill when electricity is abundant and releasing it to generate power when needed.
• Hydrogen production: Converting surplus wind energy into green hydrogen through electrolysis, which can then be stored and used as a fuel for transport, industry, or power generation.

Demand-side response and smart technologies

Empowering consumers to manage their energy use can help balance the grid:

• Flexible demand: Encouraging consumers to shift their electricity consumption to periods of high wind generation through smart tariffs and devices (e.g., charging electric vehicles (EVs) or running appliances when wind power is abundant).
• Smart home technology: Integrating smart meters and home energy management systems that can automatically respond to grid signals, optimising energy use and reducing peak demand.

Fuse Energy's approach to abundance

At Fuse Energy, we believe the future holds "power to play with" – a world where energy is so abundant it stops being a concern. We're not settling for the scarcity story that leads to wasted wind. Our strategy is to vertically integrate and rebuild the energy system from scratch, focusing on delivering terawatt-hours of the cheapest, cleanest energy possible. By deploying utility-scale solar and storage, alongside smart technologies, we aim to create a more resilient and efficient grid that can fully utilise renewable generation. Our mission is to make energy abundant, ensuring that clean wind power reaches your home without being wasted, transforming the energy landscape for the better.

Ready to be part of an energy future where wind waste is a thing of the past? Fuse Energy offers clear pricing, real-time usage data, and 24/7 human customer support, making it easier to manage your home's energy. Switching takes just a few minutes, so you can start taking control of your bills today. Click here to switch to Fuse Energy.

We're building a future with power to play with, where energy is abundant and affordable. Discover more about our mission and how we're working to achieve it by clicking here.

References

1. UK Government. Subnational electricity and gas consumption summary report 2021