Quick Answer
- Yes, factories and warehouses in Chennai can install rooftop solar and apply for TANGEDCO net metering under the industrial and commercial net metering provisions
- Industrial and HT commercial connections have different net metering rules and capacity limits compared to domestic connections in Tamil Nadu
- TANGEDCO permits net metering for industrial consumers up to a system capacity of 1MW — significantly higher than the 10kW residential limit
- Industrial net metering billing works on a monthly settlement basis with export credits offset against import charges at applicable tariff rates
- SKS Synergies designs and installs industrial rooftop solar systems across Chennai and manages the complete TANGEDCO net metering approval process for factories and warehouses
Why Factories and Warehouses in Chennai Are Ideal Solar Candidates
Industrial and warehouse properties in Chennai represent some of the strongest candidates for rooftop solar installation — yet many factory owners and warehouse operators have not yet made the switch. The combination of large flat roof areas, high daytime electricity consumption, expensive industrial TANGEDCO tariffs, and the absence of subsidy constraints that limit residential system sizing makes industrial rooftop solar one of the highest-return solar investments available in Tamil Nadu.
Tangedco solar ppa tariff 2026
A factory with 1,000 square metres of south-facing flat roof space can install a 100kW to 150kW solar system — generating 400 to 600 units per day and saving ₹3,000 to ₹5,000 per day at industrial tariff rates. The TANGEDCO net metering framework for industrial consumers makes this generation fully accountable — with every exported unit credited against import charges on the monthly electricity bill.
How TANGEDCO Net Metering Works for Industrial Consumers in Chennai
The net metering framework for industrial and commercial consumers in Tamil Nadu operates on the same fundamental principle as residential net metering — export units are credited against import units on the monthly bill — but with several important differences in implementation.
Capacity limits for industrial net metering
Residential consumers in Tamil Nadu can install rooftop solar systems up to 10kW under the PM Surya Ghar framework. Industrial and commercial consumers on LT connections can install up to 1MW of rooftop solar capacity under TANGEDCO’s commercial net metering provisions. HT industrial consumers have capacity limits defined by their sanctioned contract demand — with specific approval required from TANGEDCO for large-scale installations.
Billing settlement for industrial net metering
Industrial net metering billing in Tamil Nadu is settled on a monthly basis. Export units generated by your solar system and fed back to the TANGEDCO grid are credited at the applicable export tariff rate — which may differ from the import tariff rate depending on your connection category and the applicable Tamil Nadu Solar Energy Policy provisions.
The net monthly bill reflects the difference between import charges at your applicable industrial tariff and export credits at the applicable export rate — with any net credit carrying forward to the following billing period.
Connection category and tariff implications
The net metering financial benefit for an industrial consumer depends significantly on their TANGEDCO connection category. LT commercial consumers paying ₹6.00 to ₹7.50 per unit and HT industrial consumers paying ₹5.50 to ₹8.00 per unit depending on demand and consumption levels all achieve strong net metering savings — but the exact financial model varies by connection type and must be calculated specifically for each installation.
What TANGEDCO Approval Process Does a Factory or Warehouse Need in Chennai
The TANGEDCO approval process for industrial rooftop solar net metering is more involved than the residential process — reflecting the larger system sizes and grid impact considerations for industrial-scale installations.
The process begins with a technical feasibility application to the local TANGEDCO section office — submitting your current electricity bill, property ownership documents, proposed system size, and a preliminary system design report. TANGEDCO reviews the application against grid capacity in your area and your connection’s sanctioned demand.
Following feasibility approval your MNRE-empanelled installer completes the system installation and submits commissioning documentation to TANGEDCO. A TANGEDCO inspector verifies the installation against safety standards and grid connection requirements before approving net meter installation.
For HT industrial consumers above a certain capacity threshold a TANGEDCO grid impact assessment may be required — evaluating whether the proposed solar system’s export capacity can be absorbed by the local grid infrastructure without voltage or stability issues.
SKS Synergies manages the complete TANGEDCO approval process for all industrial and commercial solar installations in Chennai — from initial feasibility application through to net meter commissioning and first billing cycle verification.
Roof Suitability Considerations for Factory and Warehouse Solar in Chennai
Factory and warehouse rooftops in Chennai present unique installation considerations compared to residential rooftops. Most industrial buildings use GI sheet or Mangalore tile shed roofing rather than flat RCC terraces — requiring specialised mounting systems designed for metal sheet or tile roof installation.
GI sheet roofing — common in Chennai’s industrial estates including Ambattur, Guindy, and Manali — requires hook and clamp mounting systems that attach to the roof purlin structure without penetrating the sheet surface. This avoids roof leakage risk and maintains structural integrity while supporting panel loads effectively.
Key Takeaways
- Factories and warehouses in Chennai can install rooftop solar and access TANGEDCO net metering under commercial and industrial provisions
- Industrial net metering capacity limits go up to 1MW — far beyond the 10kW residential limit
- Industrial net metering billing settles monthly with export credits offsetting import charges at applicable tariff rates
- The TANGEDCO approval process for industrial solar is more involved than residential — requiring feasibility application and grid impact assessment for large systems
- SKS Synergies manages complete TANGEDCO approval and installation for industrial and warehouse solar projects across Chennai
Frequently Asked Questions
What is the maximum solar system size a factory in Chennai can install under TANGEDCO net metering? LT commercial and industrial consumers in Tamil Nadu can install rooftop solar up to 1MW under TANGEDCO net metering provisions. HT consumers have limits defined by their contract demand — specific approval is required from TANGEDCO for installations above these thresholds.
Can a warehouse in Chennai with a GI sheet roof install solar panels? Yes. GI sheet roofs are suitable for solar installation using specialised hook and clamp mounting systems that attach to the purlin structure without penetrating the sheet surface. SKS Synergies has extensive experience installing solar on industrial GI sheet roofing across Chennai’s industrial estates.
How long does TANGEDCO net metering approval take for a factory in Chennai? Industrial net metering approval timelines in Chennai typically range from 4 to 12 weeks depending on system size, connection category, and TANGEDCO’s current processing workload in your area. Larger HT installations requiring grid impact assessment may take longer.
Does a factory in Chennai need to inform its insurance provider after installing solar? Yes. Installing a rooftop solar system is a material change to the insured property that should be declared to your property insurance provider. Most insurers can extend coverage to include the solar system — SKS Synergies advises all commercial customers to update their insurance documentation after installation.
Ready to install solar and access net metering for your Chennai factory or warehouse? SKS Synergies handles everything from TANGEDCO approval to commissioning for industrial properties across all Chennai localities. WhatsApp us today and our industrial solar team will assess your property and design the right system for your business.