Solar electricity generation
Rooftop solar panels convert sunlight into electricity.
Tamil Nadu
Net Metering Solar in Tamil Nadu for Rooftop Solar Systems
Make the most of your rooftop solar investment with the right grid-connected solar solution. Net metering solar helps eligible electricity consumers manage the power generated by their rooftop solar systems and the electricity they consume from the grid.
Whether you are planning a 3kW residential solar installation or a larger commercial rooftop solar project, understanding Tamil Nadu's solar billing regulations, meter requirements and grid connectivity process is essential.
At Kyra Photon Tech, we help customers explore suitable rooftop solar solutions based on their electricity consumption, property requirements and energy goals.
Looking to install rooftop solar in Tamil Nadu? Connect with our team to discuss your solar requirements.
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Billing arrangement
What Is Solar Net Metering?
Solar net metering is an electricity billing arrangement that records the energy consumed from the electricity grid and the solar electricity exported to the grid through a bidirectional meter.
When your rooftop solar panels generate electricity, the power is first used to meet your property's electricity requirements. If the solar system produces more electricity than you consume at that moment, surplus electricity may be exported to the grid, subject to the applicable billing arrangement.
A bidirectional meter records the electricity flowing in both directions.
This allows consumers to monitor their solar generation, electricity consumption and grid interaction under the applicable Tamil Nadu regulations.
Import and export
How Does Solar Net Metering Work?
A grid-connected rooftop solar system works by generating electricity from sunlight and supplying it to your property's electrical loads.
Here is how the process works:
Power consumption
Generated electricity is used to operate appliances, lighting and other electrical equipment.
Surplus electricity
Excess solar generation can be exported to the electricity grid when permitted.
Electricity import
When solar generation is insufficient, electricity is drawn from the grid.
Meter recording
The bidirectional meter records imported and exported electricity for applicable billing calculations.
The actual credit, adjustment and payment for exported electricity depend on the billing mechanism applicable to the consumer.
TNERC and the utility
Solar Net Metering in Tamil Nadu – Rules and Regulations
Tamil Nadu has established regulatory provisions for grid-connected rooftop solar installations. Consumers should understand the applicable regulations before purchasing or installing a solar power system.
One important distinction is between legacy net metering and the subsequent net feed-in arrangement.
Under the Tamil Nadu rooftop solar framework, applications registered before 25 March 2019 are treated differently from applications registered on or after that date. The latter generally follow the applicable net feed-in mechanism rather than conventional net metering.
Consumers should verify the current TNERC regulations and TNPDCL/TANGEDCO guidelines before proceeding.
Key considerations include:
- Electricity service connection and consumer eligibility.
- Permitted rooftop solar system capacity.
- Sanctioned load and technical feasibility.
- Grid connectivity and electrical safety requirements.
- Bidirectional meter installation.
- Utility inspection and commissioning approval.
- Applicable electricity export and billing provisions.
Understanding these requirements helps avoid application delays and installation-related complications.
Utility requirements
Net Metering for Rooftop Solar Systems in Tamil Nadu
Installing a rooftop solar system requires more than selecting solar panels and an inverter. The system must also meet the applicable electricity utility and grid connectivity requirements.
For residential and commercial properties, important considerations include:
- Available shadow-free rooftop space.
- Monthly electricity consumption.
- Existing electricity connection and sanctioned load.
- Solar system capacity requirements.
- Applicable net metering or net feed-in arrangements.
- Bidirectional meter and grid connectivity requirements.
According to the Tamil Nadu Solar Rooftop Portal, feasibility approval is waived for applications up to 3kW of applied solar load. For higher capacities, the applicable feasibility process must be completed.
Separate from the system price
What Are the Net Meter Charges in Tamil Nadu?
The cost of installing a solar net meter depends on the applicable utility charges, consumer category, meter specifications and installation requirements.
The overall expenses may include:
- Solar application and processing charges, where applicable.
- Bidirectional meter charges.
- Meter testing and installation expenses.
- Applicable grid connectivity charges.
- Electrical protection and associated installation components.
Consumers should request an itemised quotation and verify the latest charges through the official TNPDCL solar rooftop portal before making payments.
It is important to understand that the price of a net meter is different from the overall rooftop solar installation cost.
Meter and the full system
What Is the Price of a 3kW Solar Net Meter in Tamil Nadu?
The price of a 3kW solar net meter should not be confused with the price of a complete 3kW rooftop solar system.
A 3kW solar installation generally includes:
- Solar PV panels.
- Grid-connected solar inverter.
- Mounting structures.
- AC and DC electrical protection.
- Solar cables and accessories.
- Bidirectional metering and grid connectivity arrangements.
The final project cost depends on equipment selection, roof conditions, installation requirements and applicable utility charges.
Eligible residential consumers may also benefit from government rooftop solar subsidy programmes. Under the Tamil Nadu Solar Acceleration Scheme portal, the displayed combined central and state assistance for an eligible 3kW residential installation is up to ₹1 lakh, subject to scheme conditions and approval.
For an accurate project estimate, consumers should assess their electricity consumption and obtain a customised quotation.
From the bill to commissioning
How to Apply for Solar Net Metering in Tamil Nadu
The process of installing a grid-connected rooftop solar system involves several steps.
1. Evaluate your electricity consumption
Review your electricity bills and identify a suitable solar system capacity.
2. Check rooftop suitability
Assess available roof space, sunlight exposure and structural conditions.
3. Submit the application
Register through the applicable official solar rooftop application portal.
4. Complete feasibility requirements
Obtain utility approval wherever required.
5. Select a solar installation provider
Choose a suitable provider and finalise your installation.
6. Install the solar system
Complete panel, inverter and electrical component installation.
7. Complete inspection
Submit the required installation documents and readiness information.
8. Install the bidirectional meter
Complete the utility's metering and grid connectivity process.
9. Commission the system
Start generating solar electricity after the necessary approvals.
The official TNPDCL portal provides online application facilities, application tracking and meter-related documentation services.
Grid-connected rooftop
Benefits of Installing Rooftop Solar with Net Metering
A properly designed grid-connected rooftop solar system can provide several advantages for property owners.
1. Reduce electricity expenses
Generate electricity using sunlight and reduce the amount of electricity purchased from the grid.
2. Utilise surplus solar generation
Export eligible excess electricity to the grid under the applicable billing arrangement.
3. Improve energy independence
Generate electricity at your property and reduce dependence on conventional grid electricity during sunlight hours.
4. Support sustainable energy
Solar power helps reduce dependence on fossil-fuel-based electricity generation.
5. Benefit from eligible government subsidies
Eligible residential consumers can explore available central and Tamil Nadu government rooftop solar assistance programmes.
Property and consumption
Why Choose Kyra Photon Tech for Solar Solutions in Tamil Nadu?
Choosing the right solar solution is important for achieving reliable system performance and long-term electricity savings.
Kyra Photon Tech helps customers explore rooftop solar solutions based on their property requirements, electricity consumption and installation objectives.
Whether you are considering a residential 3kW solar system or a larger rooftop solar installation, understanding system capacity, equipment requirements and utility procedures can help you make an informed decision.
Connect with Kyra Photon Tech to discuss:
- Residential and commercial rooftop solar requirements.
- Solar system capacity planning.
- Grid-connected solar installation options.
- Net meter and grid connectivity requirements.
- Solar project cost estimation.
- Applicable government subsidy information.
Planning to install rooftop solar in Tamil Nadu?
Get in touch with Kyra Photon Tech to discuss your solar requirements and explore a suitable installation solution.
Frequently Asked Questions About Net Metering Solar in Tamil Nadu
Yes. Tamil Nadu supports grid-connected rooftop solar arrangements under applicable TNERC regulations. The available billing mechanism depends on consumer category, application and applicable regulatory provisions. Consumers should verify current eligibility and settlement rules with TNPDCL before installation.
Chennai office
Planning to install rooftop solar in Tamil Nadu?
Get in touch with Kyra Photon Tech to discuss your solar requirements and explore a suitable installation solution.