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The Karnataka Electricity Regulatory Commission (KERC) has issued a draft regulation for the implementation of rooftop aero turbines (RAT) with or without solar power integration in Karnataka. This regulation aims to promote renewable energy generation by utilizing small-scale wind energy systems on rooftops, primarily in urban and suburban areas where wind speeds are generally lower.
Under the Electricity Act of 2003, KERC is tasked with encouraging the use of renewable energy sources, including wind and solar, for electricity generation. This new regulation supports that goal by providing guidelines for the installation of rooftop aero turbines, which can be used alongside solar panels or independently. The regulation falls under Karnataka’s Renewable Energy Policy for 2022-2027 and highlights its commitment to exploring new energy technologies.
Rooftop aero turbines are small wind turbines designed to generate electricity from wind on rooftops. The regulation sets out guidelines for how these turbines, either with solar panels or without, can be connected to the state’s electricity grid. Eligible consumers, such as homeowners, businesses, or institutions, can install these turbines to generate power for their use or sell excess energy to the grid. The regulation allows both net-metering and gross-metering systems to manage the power generated by these turbines.
The eligibility criteria for consumers include having sufficient rooftop space and ensuring that the installation complies with building construction laws. The regulation specifies that the turbines should be capable of generating at least one kilowatt (kW) of power, and the total capacity should not exceed the consumer’s sanctioned load.
The draft regulation also provides details on the technical requirements, such as the voltage levels at which the turbines can be connected to the grid and the safety standards that must be met. For example, turbines with a capacity of up to 5 kW must connect at 230 volts, while larger installations require higher voltage levels.
KERC has introduced a transparent, first-come, first-served procedure for consumers to apply for rooftop aero turbine installations. Once approved, consumers have 180 days to complete the installation. The regulation also outlines the responsibility for maintenance and safety, stating that consumers must ensure their systems operate safely and comply with the necessary technical standards.
In terms of energy accounting, KERC has established that for net-metering, any surplus energy produced by the consumer will be credited back to them, while in gross-metering, all energy generated will be supplied to the distribution licensee. Consumers will receive compensation for the electricity they supply based on pre-agreed rates in their power purchase agreements (PPA).
KERC has invited stakeholders to submit objections or suggestions regarding this draft regulation within 30 days from the date of publication. The regulation will be finalized after this period, following a review of the feedback. This initiative marks a significant step towards enhancing renewable energy production in Karnataka by encouraging the use of both solar and wind energy in urban settings.
