Synthetic inertia allows wind energy to become a stable force in the grid

Since the rise of green energy, many countries have seen a growing share of renewable sources in their power mix. Critics often argue that renewables are "unstable," but this view is increasingly outdated. With advanced satellite imaging and more accurate weather forecasts, grid operators can now anticipate fluctuations in solar and wind generation. For example, when clouds block sunlight or wind slows down, the grid can adjust in advance. There's no real sudden instability—yet some still claim renewables are unreliable. In fact, the real issue isn’t instability, but the lack of traditional "stable power." Traditional "stable power" comes from large turbines and flywheels that are synchronized with the grid’s AC frequency. These devices have massive inertia, which helps maintain grid stability during sudden imbalances. If a power plant fails or a unit drops off, the inertia of these rotating machines resists the frequency drop, allowing them to automatically boost output and buy time for operators to respond. Solar energy lacks this kind of built-in stability. While wind turbines also have mass and rotate at high speeds, they aren't directly connected to the grid like traditional generators. This means they don’t provide the same automatic frequency response. However, wind turbines can be programmed to simulate inertia by slowing down slightly and then quickly increasing output—this is called synthetic inertia. Synthetic inertia technology has become a game-changer for grid operators. As more renewable sources come online, the proportion of traditional "stable power" decreases, making grid stability more challenging. But if wind turbines can act as a stabilizing force, it reduces concerns about reliability. The key is that synthetic inertia doesn’t come without cost—it requires using kinetic energy, which slows the turbine down. Operators must carefully manage this to avoid further instability. In Quebec, Canada, Hydro-Québec became the first grid operator to implement synthetic inertia on a large scale. With 3,300 MW of wind capacity, the province’s grid is small and highly sensitive. In 2015, a major substation failure caused a 1,600 MW loss. Thanks to synthetic inertia, wind turbines provided an emergency 126 MW of power, preventing a potential collapse. The grid frequency only dropped to 59.1 Hz, compared to an estimated 59.0–59.2 Hz without it. While synthetic inertia works well initially, the recovery phase presents challenges. Some turbines had to reduce output by up to 60% to regain speed, slowing the grid’s recovery. To prevent this, Quebec now limits how much wind energy can be used during recovery to no more than 20% of its capacity. The success of Quebec’s grid shows that wind turbines equipped with synthetic inertia can act as a reliable source of stability. This is a major step forward for renewable integration and a significant boost for the wind energy industry. In the future, as more turbines include this feature, the argument that wind is “unstable” will become less valid. Wind energy will no longer be seen as a problem, but as part of the solution.

Deep Cycle Battery

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In conclusion, OREMA deep cycle batteries, including the UND series of AGM deep cycle batteries, UNG series of GEL batteries, deep cycle batteries, and Tubular batteries, are engineered to provide enhanced performance and excellent reliability in long duration cycling applications. With their high density active materials plates and specialized paste formulation, these batteries offer a longer service cycle life without compromising their overall lifespan. Whether it's for solar power storage, electric vehicles, or marine applications, OREMA deep cycle batteries are a reliable choice.

General Future:

5-20 years design life(25℃)

Non-spillable construction

Sealed and maintenance-free

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High density active materials plates

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Standards:

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UL, CE Certified

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Application:

Solar and wind power system

Communication systems

Uninterruptible power supplies

Golf cars and buggies

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OREMA POWER CO., LTD. , https://www.oremapower.com