Updated on January 27, 2024

·

Created on September 23, 2021

SolarMill

Upcoming Update

A hybrid renewable energy system harnessing energy from wind and the sun.

Tested By
  • National Institute of Wind Energy
Content Partners
Unknown

Author

Product Description

The SolarMill, designed by WindStream Energy Technologies, consists of a set of vertical axis wind turbines coupled with a solar PV panel in an integrated electronic system. The system can be installed on rooftops and it is sold globally.

Target SDGs

SDG 7: Affordable and Clean Energy

Target Users (Target Impact Group)

Household, Small and Medium-sized Enterprises

Distributors / Implementing Organizations

Users can obtain the product directly from the manufacturer.

Manufacturing/Building Method

The product is designed and manufactured in India.

Intellectural Property Type

Patent

User Provision Model

The users can purchase directly from the manufacturer by contacting them.

Distributions to Date Status

Although the exact number of distributions to date is unknown, this product has been distributed across India, Myanmar, Kuwait and Africa.

Power rating (W or kW)

245 W

System dimensions (m)

1.46 x 0.85 x 1.9 m

Battery type

N/A

Battery capacity (mAh)

N/A

Description of solar panels

60 cell monocrystalline type solar panel

Grid compatibility (yes/no)

Yes

Description of mobility

Semi-mobile

Design Specifications

The solar panel is a monocrystalline photovoltaic system consisting of 60 cells. The open-circuit voltage of the panel is 37.7 V and the short circuit current is 8.7 A. The maximum system voltage is 1000 V. The vertical axis wind turbine component has a cut-in wind speed of 2 m/s and a cut-out wind speed of 18.5 m/s. The wind turbine has a mechanical braking system to prevent any damage to the system if the wind speed goes beyond 18.5 m/s. The material used for the frame is galvanized G-90 steel and aluminium. The electronic enclosure rating of the system is IP53. The turbine is also manufactured using galvanized G-90 steel.

Product Schematics

Technical Support

Provided by the manufacturer.

Replacement Components

Unknown

Lifecycle

20-25 years

Manufacturer Specified Performance Parameters

The system is designed to generate energy even at lower wind speed conditions. Coupled with the solar panels, the system can generate energy 24 hrs/day and 365 days/year under ideal conditions. The system incorporates a Vertical Axis Wind turbine which can harness wind energy from multiple directions making it more efficient. It can be either used as an on-grid or as an off-grid system.

Vetted Performance Status

Testing has been conducted using the IEC 61400-2 standards.

Safety

Standard precautions for operating solar and wind turbine systems should be taken.

Complementary Technical Systems

An on-board battery charge controller grid-tied inverter is an optional extra to allow for the system to be connected to a battery.

Academic Research and References

This paper describes the wind turbine blade design & validation of the SolarMill system:

Mohd, S., & Fudhail, M., 2021, View of Optimization of the Helical Wind Turbine Blade, Journal of complex flows, Vol 3, No.1, pp. 1-6

This paper looks into hybrid renewable energy systems:

Al-Ajmi, M. S., et al., 2018, A True Hybrid Solar Wind Turbine Electric Generator System for Smaller Hybrid Renewable Energy Power Plants, MATEC Web of Conferences

Compliance with regulations

The product is certified to ISO 9001 standard. Tested and certified by a third-party organization and is registered with the Ministry of New and Renewable Energy (MNRE).

Evaluation methods

The system has been tested for its quality as per the ISO 9001:2015 standards.

Other Information

None

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