Odisha has some of India’s highest solar potential, with average solar radiation of 5.3-5.5 kWh per square meter per day across most of the state. The mining and industrial sectors in western Odisha — served by TPWODL — represent a significant commercial and industrial solar opportunity, while southern Odisha under TPSODL has strong agricultural and residential demand. The Odisha Electricity Regulatory Commission (OERC) issued landmark regulations in April 2026 that updated the net metering framework for all four DISCOMs, including mandatory battery storage for systems 5 kW and above. See Solar Energy India for national context.
Critical Compliance Point
OERC’s April 2026 regulations mandate hybrid inverters and battery energy storage systems for all distributed renewable energy systems of 5 kW and above. Installers who quote standard grid-tied systems at 5 kW or above will face application rejection. The battery requirement adds significant cost — factor this into proposals for commercial and industrial consumers in TPWODL and TPSODL territories.
OERC Net Metering Framework
OERC issued comprehensive regulations in April 2026 (No. OERC/RA/RCO-DRES-43/2026/414) that govern all four Odisha DISCOMs. These regulations cover net metering, gross metering, net billing, and behind-the-meter configurations.
Eligible consumer categories for net metering:
- Domestic consumers
- Group housing societies
- Charitable institutions
- Government buildings
- Schools and local authority buildings
- Agricultural consumers
Net metering is not available for general commercial and industrial consumers — these categories must use net billing or open access arrangements.
Capacity and configuration rules:
| Parameter | Rule |
|---|---|
| Capacity range | 1 kW to 500 kW |
| Maximum limit | Sanctioned load or contract demand, whichever is lower |
| Storage mandate | Hybrid inverter + BESS for systems 5 kW and above |
| Configuration switches | Maximum 3 switches during system lifetime |
| Switch frequency | Only 1 switch allowed per year |
Energy accounting and settlement:
- Excess generation is carried forward to the next billing cycle
- Carry-forward is allowed within the same settlement period (April to March)
- Annual reset: carried-forward credits reset to zero at the start of each settlement period
- End-of-period settlement: excess electricity is paid at a feed-in tariff determined by OERC
December 2025 Amendments to Net Metering Rules
OERC amended the 2016 Net Metering Order in December 2025 with three important updates:
1. Hybrid inverters permitted: Consumers can now install either grid-tied or hybrid inverters (storage-ready). This amendment paved the way for the mandatory BESS requirement in the April 2026 regulations.
2. M2M data loggers as alternative metering: SIM-based machine-to-machine communication devices are now allowed as an alternative to dedicated generation meters. This reduces metering costs for smaller installations.
3. PM Surya Ghar alignment: Technical standards and application processes are now aligned with the central PM Surya Ghar program requirements.
Technical standards for inverters:
- Sine-wave inverters with IEEE 519 harmonic limits
- IS 16221 / IEC 62109-2 safety standards
- Anti-islanding protection compliant with grid code requirements
The Four DISCOMs: Territory and Characteristics
TPWODL (TP Western Odisha Distribution Limited)
Headquarters: Sambalpur
Territory: Western Odisha — Sundargarh, Jharsuguda, Sambalpur, Bargarh, Bolangir, Kalahandi, Nuapada, Nabarangpur districts
Portal: rts.odisha.gov.in
Solar potential: Highest in Odisha. Sundargarh district alone has an estimated 15.23 GW of ground-mounted solar potential. Angul district has 14.06 GW.
Industrial profile: Core mining and steel hub. Major industrial consumers include steel plants, aluminium smelters, and agro-processing units. TPWODL’s territory has the highest concentration of energy-intensive industries in Odisha.
TPSODL (TP Southern Odisha Distribution Limited)
Headquarters: Berhampur
Territory: Southern Odisha — Ganjam, Gajapati, Kandhamal, Boudh, Nayagarh, Khurda (partial), Koraput, Malkangiri, Rayagada districts
Portal: rts.odisha.gov.in
Solar potential: Strong, particularly in Nabarangpur and Malkangiri districts.
Profile: Mix of agricultural, residential, and small commercial consumers. Less industrial density than TPWODL but significant agricultural solar pump demand under PM-KUSUM.
TPCODL (TP Central Odisha Distribution Limited)
Headquarters: Bhubaneswar
Territory: Central Odisha including Bhubaneswar, Cuttack, Puri, and surrounding districts
Portal: TPCODL Solar Registration Portal
Profile: State capital region with growing residential and commercial solar adoption. Bhubaneswar’s urban development drives consistent rooftop solar demand.
TPNODL (TP Northern Odisha Distribution Limited)
Headquarters: Balasore
Territory: Northern Odisha — Balasore, Bhadrak, Jajpur, Kendrapara, Jagatsinghpur, Mayurbhanj, Keonjhar districts
Portal: rts.odisha.gov.in
Profile: Coastal and inland districts with agricultural and residential demand. Keonjhar has mining activity but lower industrial density than TPWODL’s western districts.
Solar Potential and Mining Industry Opportunities
Odisha’s solar potential is among the highest in India:
| Metric | Value |
|---|---|
| Average solar radiation | 5.3-5.5 kWh/m²/day |
| Sunny days per year | 280-300 days |
| Ground-mounted solar potential (7% wasteland) | 138 GW |
| Rooftop solar potential | 1,133 MW |
| Floating solar potential | 6.7-18.7 GW |
Mining wasteland for solar: Odisha has significant reclaimed mining land suitable for solar deployment. In Angul district alone:
- Reclaimed external OB area: 1,868 hectares (934 MW potential)
- Reclaimed excavated area: 9,293 hectares (4,646 MW potential)
- General wasteland: 3,852 hectares (1,925 MW potential)
Approximately 33,000 hectares of land will become available from coal mine and power plant closures over the next 3-4 decades. 93% of this land comes from coal mining operations.
For installers targeting the mining sector:
- Land is already available — no acquisition needed
- TPWODL territory has the grid infrastructure to support large installations
- Open access arrangements suit captive power needs of mining companies
- The Odisha Renewable Energy Policy 2022 offers specific incentives for industrial consumers
Odisha Renewable Energy Policy 2022 Incentives
The Odisha Renewable Energy Policy 2022 provides incentives for commercial and industrial solar projects:
| Incentive | Detail |
|---|---|
| Electricity duty concession | Rs. 0.50 per kWh |
| Cross-subsidy surcharge exemption | 50% exemption |
| STU charges exemption | Rs. 0.20 per kWh for 15 years (20 years if commissioned by March 31, 2026) |
| Wheeling charges reduction | 25% reduction for in-state projects for 15 years |
Key deadline: Projects commissioned by March 31, 2026 qualify for extended 20-year STU charge exemptions instead of the standard 15 years.
Open access for large consumers: Industrial and mining consumers above 1 MW typically use open access rather than net metering. The process involves OERC/SLDC approval, DISCOM connectivity approval, wheeling arrangements, and banking agreements.
Open Access Is the Route for Mining and Large Industrial Solar
Net metering in Odisha is limited to specific consumer categories and does not include general commercial and industrial consumers. Mining companies, steel plants, and large industrial facilities in TPWODL territory should pursue captive open access or third-party open access arrangements. The 25% wheeling charge reduction and STU exemptions make this economically viable for projects above 1 MW.
Design Odisha Solar Projects for Mining and Industrial Clients
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RCO Targets and Market Context
OERC has set aggressive Renewable Consumption Obligation (RCO) targets:
| Year | Total RCO Target |
|---|---|
| 2024-25 | 29.91% |
| 2025-26 | 33.01% |
| 2026-27 | 35.95% |
| 2027-28 | 38.81% |
| 2028-29 | 41.36% |
| 2029-30 | 43.33% |
These rising RCO targets create demand for renewable energy certificates and drive DISCOM interest in procuring solar power from rooftop and open access projects.
Common Compliance Issues in Odisha
Storage mandate miscalculation: The 5 kW BESS requirement is frequently overlooked in proposals. Installers quoting 5 kW and above systems must include hybrid inverter and battery costs. The battery specification must meet OERC technical standards.
Consumer category restrictions: Net metering is not available for general commercial and industrial consumers. Quoting net metering for a factory or commercial building leads to application rejection. Route these consumers to net billing or open access.
Configuration switch limits: Consumers can only switch between metering types 3 times during the system’s lifetime, with only 1 switch per year. Advise clients to choose the right configuration at the outset.
Open access complexity: Large industrial projects require OERC/SLDC approval in addition to DISCOM connectivity approval. The timeline is longer than rooftop net metering — typically 90-180 days.
ALMM compliance for subsidised projects: PM Surya Ghar projects in Odisha must use ALMM-listed components. Verify List I (modules) and List II (inverters) status before procurement.
Related Guides
- India Solar Compliance Hub
- Bihar Solar Compliance
- Kerala Solar Compliance
- Maharashtra Solar Compliance
- PM Surya Ghar Guide
- Net Metering Regulations
Frequently Asked Questions
Which DISCOMs operate in Odisha and what areas do they cover?
Four Tata Power DISCOMs: TPNODL (Northern), TPCODL (Central), TPWODL (Western, mining hub), and TPSODL (Southern). All operate under OERC regulations.
What is the capacity limit for net metering in Odisha?
1 kW to 500 kW, capped at sanctioned load or contract demand. Systems 5 kW and above require hybrid inverters and BESS. Consumers can switch configurations up to 3 times, with only 1 switch per year.
How do the December 2025 OERC amendments affect solar installations?
Hybrid inverters are now permitted, M2M data loggers are allowed as an alternative to generation meters, and regulations are aligned with PM Surya Ghar requirements.
What is the settlement period for excess generation in Odisha?
Annual (April to March). Excess credits are carried forward monthly within the period. At period end, unused credits reset to zero and any final excess is paid at OERC’s feed-in tariff.
What solar opportunities exist for Odisha’s mining industry?
Reclaimed mining wasteland in Angul, Jharsuguda, and Sundargarh offers significant solar potential without land acquisition costs. The Odisha RE Policy 2022 provides wheeling charge reductions and STU exemptions for industrial consumers.
