How BESS Supports Renewable Energy Integration
Solar and wind power are changing the game when it comes to how businesses generate and use energy. But, while they’re great for the environment, their unpredictability can be tricky for industries that need a constant, reliable power supply. When the sun isn’t shining or the wind stops blowing, fluctuations in generation can lead to unreliable power, downtime, or increased reliance on fossil fuels. This is where Battery Energy Storage Systems (BESS) step in, acting as a bridge between energy supply and demand.
By storing excess renewable energy and dispatching it when needed, BESS solutions help companies balance out the volatility of renewables, enabling reliability, cost savings, and a reduced carbon footprint. At Aggreko, we pride ourselves on delivering flexible, on-demand energy solutions that let businesses tap into the benefits of renewables without investing in costly permanent infrastructure. With years of experience across multiple sectors, from mining to data centres, we’re committed to helping you integrate greener power seamlessly into your operations.
The challenge: integrating renewable energy
Renewable energy's clean, abundant appeal makes it an attractive option for companies aiming to improve sustainability and reduce emissions. Yet, while solar arrays and wind farms provide many environmental benefits, they are also subject to weather-dependent cycles. A solar installation, for instance, generates peak power under strong sunlight but tapers off late in the day, while wind turbines may produce inconsistent output when wind speeds fluctuate. This natural variability can lead to mismatches between supply and demand, resulting in either surplus energy that goes unused or shortfalls that trigger reliance on backup generators.
In New Zealand, renewable energy accounted for over 80% of the total electricity supply in 2023, with hydro contributing 12%, and wind and solar 36% combined. In 2022, there was a record amount of distributed solar generation installed (68 MW). Despite this growth, the intermittent nature of these energy sources presents challenges in maintaining a stable and reliable power supply.
For industries like data centres, mining, and construction, downtime simply isn't an option. They need round-the-clock power to keep critical systems up and running, often in locations where grids are weak or non-existent. In such environments, the complexities of adopting solar or wind power multiply, particularly when a steady supply of power is non-negotiable. Additionally, grid operators must grapple with frequency imbalances caused by rapid shifts in renewable output, raising the risk of instability or even blackouts.
All these factors underscore why integrating renewables is more than just installing panels or turbines. It requires holistic planning that accounts for resource intermittency and energy storage solutions. By smoothing out the highs and lows of power production, Battery Energy Storage Systems (BESS) provide industries with the stability they need to confidently embrace renewables, even in challenging conditions or remote off-grid scenarios.