EHD Wind Energy: Electrohydrodynamic wind energy is produced when wind is used to do work to separate opposite charges .

Capacity factor: The ratio of actual average power output to power output at a specific rated wind speed. There is no industry standard for rating wind speed; it typically varies between 12 and 15 meters per second (27 and 34 mph).

What does Accio Energy do?
Accio Energy is a next-generation wind power company. Accio is developing the world’s first commercially viable EHD wind energy system, using the blade- and turbine-free technology to reduce global dependence on fossil fuels.
How was Accio founded?
Dr. Dawn White founded the company in 2008 to combine the basics of EHD wind energy technology with her deep background in manufacturing. Since its founding, Accio has grown to include a team of engineering, science, and market experts while achieving record power output from its EHD wind energy systems.
What is Accio’s vision for the future of the EHD wind energy system?
Accio’s goal is to bring its EHD wind energy systems to the global offshore market at an unsubsidized price below that of traditional offshore wind and on par with that of US coal and natural gas.
The EHD wind energy system
What is EHD wind energy?
EHD wind energy uses the power of the wind to separate positive and negative charges in water droplets. As the wind carries off the positively-charged water droplets, the negative charges remain. The system harvests the negative charge as current, thereby producing electric power.
Why does Accio use EHD wind energy?
Accio uses EHD wind energy for enhanced capacity factor, scalability, and economic efficiency. Due to the physics of the EHD wind system, it can generate a higher fraction of its rated power at most wind speeds compared to turbine-based generator. The modular, panel-based design allows for maximum scalability. The simple, low-cost components of the generator cut manufacturing and installation expenses by up to 50%.
How does an EHD wind energy system obtain better performance at most wind speeds?
EHD wind power operates by using the wind to separate charges. The rate of charge separation is linearly proportional to the wind speed, so the rate of power generation is also linearly proportional to the wind speed. For turbine-based generators, the relationship is sub-linear.
What will the cost of energy be from an Accio EHD wind energy system?
Once the technology is mature, Accio’s EHD wind energy system is expected to produce power at unsubsidized costs on par with US coal and natural gas.
Will the generator harm wildlife?
No. Much like high-voltage power lines where birds can safely perch, the high-voltage EHD wind energy generator poses no threat to any wildlife landing on it. The charged water droplets are also harmless.
How will Accio’s generator alter views from shore?
Unlike wind turbines, which demand maximum vertical height to allow for the full rotation of spinning blades, Accio’s EHD wind energy system can take a variety of shapes and forms. Similar to photovoltaic panels, customers can arrange EHD panels for minimum visibility.
Does the generator alter the water it uses?
Not materially. The EHD system adds a charge to the water droplets it emits, but the charge is neutralized once the droplets hit the ground or return to the ocean. While nuclear and coal plants use water to dump excess heat, Accio’s generator produces no temperature change in the water it emits. Similarly, nuclear and coal plants add chemicals to control algae and fungi growth in the warm water; EHD systems will return the unheated water to its source chemically unaltered.
What happens when the wind changes?
Accio’s EHD wind energy systems can operate reliably in a wide range of conditions. With a simple adjustment in droplet charge, the generator can instantly change its load to correspond with wind speeds. The EHD system’s nimble performance compares favorably with wind turbines, which adjust loads slowly due to the enormous inertia of spinning blades.
How does the system handle severe weather?
From a shape perspective, an EHD wind system is likely to look similar to the directional signs lining highways nationwide. Like the signs, the generator can have a design that withstands hurricane-force winds. Unlike the signs, the generator has a design that allows wind to pass through it. Additionally, the array of panels can turn to minimize its exposed cross-section, thereby minimizing the force on the generator.
How safe is the EHD wind energy system?
The EHD wind energy system presents no safety risks outside a small operating area at the top of the pole. As with high-voltage lines, the generator is harmless at any distance larger than a few meters from the high voltage surface.