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This proposal was moved to: Energy Supply Workspace
This proposal was reopened in Energy Supply 2018


SKYSCRAPERS AS WIND TOWERS - Horizontal axis windmills



Conventional windmills present visual problems and are not feasible to be placed within populated areas. 
Vertical axis windmills known to date have not brought a solution for wind energy on a significant scale
Finding a model for a vertical axis windmill resembling a  tower that blends with the urban environment presents a great source of clean energy at a low cost by requiring minimal transmission costs as it is placed very close to the consumers.

The proposed model is designed and includes features that make it more effective than other models to date:

To date there are no large size vertical axis windmills noticeble in in cities or anywhere else. Nor are there many small size vertical axis windmills to provide power of any significance to a city.

This proposal argues that with specific design features it is possible to create a model of a vertical axis windmill that can make them more competitive than what we have seen to date. 

In the image below is a spinning "wing" that captures the wind force with flappers that close from the wind pressure in the concave side and close from the wind pressure on the return (concave side) in order to reduce resistance on the return.

Wind towers capturing a large amount of energy with minimal visual impact while being close proximity to consumers (reducing grid costs).

In the image below the tower is shown with "vertical blinds" - adjustable to parallel direction of the wind - designed to cover the windmills for safety and visual integration.

Is this proposal for a practice or a project?


What actions do you propose?

Vertical Axis Windmill with dynamic shutters that close when needed to capture wind power and open when needed to reduce resistance on the return cycle.

In the image below there are two vertical axis windmills turning in opposite directions. The lower windmill can be seen with the shutters closed indicated by yellow arrow on the right side - white rectangles - while on the left side the shutters are open to minimize wind resistance until they reach into position to capture wind power again.

The upper windmill turns in the opposite direction to the lower where the upper yellow arrow indicates the shutters closed to capture the wind power.

the red arrow indicates the placement of the generator capturing the power from both upper and lower rotors turning in opposite directions.

Stabilizers for the blades/wings: In the image below the orange arrows indicate small wheels built into the tips of the wings to turn within circular stabilizing structure indicated by green arrows. This helps keep a smooth and continuous movement.


Horizontal elements (shown by arrows below) are connected to provide structural support against lateral force from the wind.


The proposed design can come in many sizes starting as small as a bird cage, to be placed in a yard or a balcony and plugged in to either fill a battery or feed into the power grid.

Next size would be between 1-2m tall and about 1m in diameter for new construction as part of new houses - resembling chimneys.

The proposed vertical axis windmill can be placed on roofs as well as in place of concrete poles.

Who will take these actions?

Manufacturers of wind mills will review the model and begin testing and eventually implementing the Vertical Axis Windmill with Flaps and Blinds in open areas in cities such as in parks, rotaries, industrial ares and even on streets in place of current concrete poles. 

City authorities that seek to convert to green energy may provide the rights 


Where will these actions be taken?

The vertical axis windmill model  an fit in a variety of areas from rooftops to sidewalks and open areas within cities.

In addition, specify the country or countries where these actions will be taken.

United States

Country 2

No country selected

Country 3

No country selected

Country 4

No country selected

Country 5

No country selected


What impact will these actions have on greenhouse gas emissions and/or adapting to climate change?

The vertical axis windmill model, if placed across a city including in place of concrete poles. on rooftops and in open spaces such as parking lots can provide vast amounts of energy. In combination with extensive solar energy in a city the model may provide a large portion of the energy needed to convert to a city clean energy in it's entirety. 


What are other key benefits?

Capturing wind power in densely populated ares.

Easy to build and maintain


What are the proposal’s projected costs?

The materials and building costs are are relatively lower than the traditional horizontal windmills models. They are easier to assemble and maintain.


Within less than five years a city can build a large number of the proposed model in a variety of sizes to the extent that it could supply half the energy for a city.

About the author(s)

Emil Jacob, owner and founder of Jacob Innovations LLC, design firm in Cambridge, MA.

He had his undergraduate degree in Economics from the University of Toronto and has worked extensively in IT as a Business Systems Analyst finding innovative ways to streamline and automate operations through software and optimized interfaces.

Many of his designs are part of his work in the Masters program in DESIGN FOR HUMAN HEALTH at the Boston Architectural College


I am a strong believer in simple solutions to overwhelming challenges, most importantly climate change. I am particularly concerned about the cataclysmic scenario of runaway global warming hence I believe that all efforts are vital. Especially concerted efforts by multiple entities and large numbers of contributors - such as the CoLab Competition.


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