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What is "Dispatchable Wind"?

To define "dispatchable wind" we must first define, in general, "dispatchable generation."

Dispatchable generation refers to the various sources of electric power that can be used/consumed or "dispatched" at the instant it's needed.  This means the numerous power plants within an electric grid must be running and online, generating electricity, when consumers need the power.  The problems with wind power generation, are that in most parts of the country, the wind power is generated at night, when the power is not needed as much since the "base load" power plants, the nuclear and coal fired power plants, are already running.  With the exception of battery energy storage and compressed air energy storage, wind power cannot be stored, and therefore the wind resources are not able to operate at optimum efficiencies, and the resource is not fully utilized. Therefore, power generated from wind power generation assets is highly non-dispatchable.

Wind power generation assets must be optimized so as to make the power from these assets available during peak demand periods.  Dispatchable wind means having the ability to deploy power generated from wind power generation assets, whenever the power is needed, just like fossil-fuel power generation assets.






Clean Power Generation Solutions

CHP Systems (Cogeneration and Trigeneration) Plants 
Have Very  High Efficiencies, Low Fuel Costs & Low Emissions

The CHP System below is Rated at 900 kW and Features:
(2) Natural Gas Engines @ 450 kW each on one Skid with Optional 
Selective Catalytic Reduction
system that removes Nitrogen Oxides to "non-detect."

The Effective Heat Rate of the CHP System below is 
4100 btu/kW with a Net System Efficiency of 92%. 


A CHP System may be the best solution for your company's economic and environmental sustainability as we "upgrade" natural gas to clean power with our clean power generation solutions. Our Emissions Abatement solutions reduce Nitrogen Oxides to "non-detect" which means our Trigeneration energy systems can be installed and operated in most EPA non-attainment regions!

CHP Systems - (operating in either natural gas fueled cogeneration or trigeneration --- or --- solar cogeneration or solar trigeneration configuration) may be the optimum power and energy solution for customers wanting increased power reliability and decreased energy and environmental costs. A few of the clients and markets that may benefit from our CHP Systems include the following:

What is Compressed Air Energy Storage?

Compressed Air Energy Storage is one of the emerging "Bulk Energy Storage" technologies for storing energy - typically the energy is generated and stored during off-peak periods, and dispatched to the electric grid during peak demand times. 

One Bulk Energy Storage method is Compressed Air Energy Storage - since the wind doesn't always provide enough energy for wind turbine generators to generate electricity, will store the wind energy when they generate power and "off-peak electricity" to pressurize and store air underground.  The air can be used later, by releasing it to drive generators. 

The problem with wind energy - particularly in Texas and the wind belt, much of the wind power is generated at night-time, when the power isn't as valuable.  "Dispatchable Wind" power becomes a reality with Compressed Air Energy Storage - making wind energy available in real time, or "saved" for later when power is needed. 

"Bulk energy storage is truly one of the most promising new areas of the electricity industry. The Energy Storage Council believes that bulk energy storage will become the "sixth dimension" of the electricity value chain following fuels/energy sources, generation, transmission, delivery, and customer energy services."  http://www.energystoragecouncil.org/aboutenergystorage.htm

For more information on Bulk Energy Storage, visit:  www.BulkEnergyStorage.com 

The Department of Energy (DOE) is presently working with several states to build Compressed Air Energy Storage parks, which would integrate a 75- to 150-megawatt (MW) wind farms, that are integrated with the Compressed Air Energy Storage parks.   

Before a Compressed Air Energy Storage can be used, the underground caverns that store the wind energy, must be of the right geological size, depth formation and cap rock structure.


Compressed Air Energy Storage Diagram

Compressed Air Energy Storage facilities will operate on off-peak electricity during nighttime hours. They will use the output from nearby wind power plants to operate when overall demand on the power grid is low and the utility dispatcher has curtailed output from the wind power plant. During the energy storage cycle, a compressor pushes air into the porous rock that may be several thousand feet underground and beneath the layers of impermeable cap rock. When demand for electricity rises, the stored air will be released, heated, and used to drive electric generators.

Diagram Courtesy: Imperial College

Compressed Air Energy Storage has been in use for more than 20 years in demonstration projects, and two facilities one at 290 MW in Huntorf, Germany that began operations in 1978, and another in Alabama, that began operating in 1991. The Compressed Air Energy Storage facility in Alabama is rated at 100 MW.

What is Frequency Regulation?

The electric grid, because supply and demand of electricity is always changing requires continuous and instantaneous balancing of supply and demand of electricity this continuous and instantaneous balancing of supply and demand of electricity is known as "frequency regulation."

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