Key Takeaways
- Net metering allows industrial consumers to export surplus solar electricity to the grid and receive credits on their electricity bill.
- Most Indian states permit net metering for systems up to 500 kW–1 MW capacity, though policies vary significantly by state.
- Industrial facilities in Haryana, Rajasthan, and Delhi can save ₹8–11 per unit through net metering, with payback periods under 3 years.
- The application process typically takes 30–60 days through your local DISCOM, and your solar EPC contractor can handle it for you.
- Recent policy changes in some states have shifted from net metering to gross metering or net billing for larger systems — understanding the difference is critical.
What Is Net Metering and How Does It Work?
Net metering is a billing mechanism that allows solar power producers to export surplus electricity to the grid. When your solar system generates more power than your factory consumes (typically during peak sunshine hours), the excess flows into the grid. Your electricity meter runs backward during this period, giving you credits.
The Three Types of Solar Metering in India
| Metering Type | How It Works | Payment for Excess | Best For |
|---|---|---|---|
| Net Metering | Excess units credited 1:1 against consumption | Same rate as grid tariff | Small-medium systems (under 500 kW) |
| Net Billing | Excess units purchased at a lower feed-in tariff | ₹2–4/kWh (varies by state) | Medium-large systems |
| Gross Metering | All generation sold to DISCOM | ₹2.5–4.5/kWh fixed rate | Systems designed for maximum export |
Net metering is the most favorable for industrial consumers because you receive full retail tariff credit (₹8–11/kWh) for every unit exported, rather than a lower feed-in tariff.
State-Wise Net Metering Policies in 2025
Haryana Net Metering Policy
- Eligible capacity: Up to 500 kW for industrial consumers under net metering
- DISCOM: DHBVN (Dakshin Haryana) and UHBVN (Uttar Haryana)
- Metering type: Net metering up to 500 kW; net billing for 500 kW–1 MW
- Credit settlement: Excess units carried forward for 12 months, settled annually at APPC rate
- Application fee: ₹1,000 for systems up to 100 kW; ₹5,000 for 100 kW–1 MW
- Timeline: 30–45 days from application to meter installation
- Key benefit: Haryana's high industrial tariff (₹8.5–10/kWh) makes net metering extremely attractive
Sun Wave Technologies has completed 100+ net metering installations with DHBVN and UHBVN, and handles the complete application process for all our EPC and RESCO projects.
Rajasthan Net Metering Policy
- Eligible capacity: Up to 1 MW for industrial consumers
- DISCOM: JVVNL, AVVNL, JdVVNL
- Metering type: Net metering up to 1 MW
- Credit settlement: Excess units adjusted in the next billing cycle
- Special provision: Rajasthan allows net metering for ground-mount solar on owned land within the same DISCOM area
- Timeline: 30–45 days
- Key benefit: Rajasthan has the best solar irradiance in India (5.5–6.0 kWh/m²/day) and favorable policies
Delhi Net Metering Policy
- Eligible capacity: Up to 1 MW (recently expanded)
- DISCOM: BSES Rajdhani, BSES Yamuna, Tata Power DDL
- Metering type: Net metering with annual settlement
- Credit settlement: Excess credits settled at APPC rate at year-end
- Generation-Based Incentive (GBI): ₹2/kWh for first 3 years (residential), varying for commercial
- Timeline: 30–60 days
- Key benefit: Delhi's extremely high industrial tariff (₹9–11/kWh) delivers the best ROI
Gujarat Net Metering Policy
- Eligible capacity: Up to 1 MW for industrial consumers
- DISCOM: UGVCL, PGVCL, MGVCL, DGVCL
- Metering type: Net metering with monthly billing adjustments
- Credit settlement: Excess units credited to next month, annual settlement at APPC rate
- Special note: Gujarat was the first state to adopt a comprehensive solar policy and has a well-established net metering framework
- Timeline: 30–45 days
Maharashtra Net Metering Policy
- Eligible capacity: Up to 1 MW
- DISCOM: MSEDCL, Tata Power, Adani Electricity
- Metering type: Net metering for systems up to the sanctioned load
- Credit settlement: Monthly adjustment with annual settlement
- Key change: Maharashtra has been discussing a shift to net billing for larger systems — check latest MERC orders
- Timeline: 45–60 days
- Key benefit: Very high industrial tariffs in Mumbai and Pune (₹10–13/kWh) make solar extremely attractive
Uttar Pradesh Net Metering Policy
- Eligible capacity: Up to 1 MW (increased from earlier 500 kW limit)
- DISCOM: UPPCL subsidiaries (DVVNL, MVVNL, PVVNL, KESCO)
- Metering type: Net metering with annual settlement
- Credit settlement: Excess units adjusted in subsequent billing cycles
- Timeline: 45–60 days
- Key benefit: Rapidly growing industrial base with increasing solar adoption
How to Apply for Net Metering: Step-by-Step Process
Step 1: Feasibility Assessment
Before applying, ensure:
- Your sanctioned load is sufficient (solar capacity typically limited to 80–100% of sanctioned load)
- Your roof or land can accommodate the desired system size
- You don't have pending electricity dues
- Your electrical infrastructure (transformer, panels) can handle bidirectional flow
Step 2: Prepare Required Documents
| Document | Details |
|---|---|
| Application form | DISCOM-specific format |
| ID proof | Company PAN, GST certificate |
| Electricity bill | Last 6 months of bills |
| Property documents | Ownership proof or lease agreement with NOC |
| Single line diagram | Electrical layout prepared by your EPC contractor |
| Equipment specifications | Module and inverter datasheets (BIS certified) |
| Structural stability certificate | From a licensed structural engineer |
| Safety compliance certificate | From the Chief Electrical Inspector (CEI) |
Step 3: Submit Application to DISCOM
Most DISCOMs now accept online applications. Your solar EPC contractor should handle this process. Key steps:
- Submit application with all documents
- DISCOM conducts a technical feasibility study (7–15 days)
- Receive approval letter with technical conditions
- Install the solar system as per approved specifications
- Apply for meter installation and inspection
Step 4: DISCOM Inspection and Meter Installation
- DISCOM engineer inspects the installation for safety and compliance
- Bidirectional (import-export) meter is installed
- System is synchronized with the grid
- Net metering agreement is signed
Step 5: Go Live
Once the meter is installed and the agreement is signed, your solar system starts generating credits. The first adjusted bill typically arrives within 1–2 billing cycles.
Net Metering Savings Calculator
Here's how net metering impacts your electricity costs for a 300 kW factory in Haryana:
Without Solar
- Monthly consumption: 75,000 units
- Grid tariff: ₹9.5/kWh
- Monthly bill: ₹7,12,500
With 300 kW Solar + Net Metering
- Solar generation: 40,000 units/month
- Self-consumed: 32,000 units (80%)
- Exported to grid: 8,000 units (20%)
- Grid units consumed: 43,000 units
- Net metering credit: 8,000 units
Monthly bill with solar:
| Component | Units | Rate | Cost |
|---|---|---|---|
| Grid consumption | 43,000 | ₹9.5 | ₹4,08,500 |
| Net metering credit | -8,000 | ₹9.5 | -₹76,000 |
| Net bill | — | — | ₹3,32,500 |
Monthly savings: ₹3,80,000 (53% reduction) Annual savings: ₹45.6 lakhs
Common Net Metering Challenges and Solutions
Challenge 1: DISCOM Delays
Some DISCOMs take 60–90 days instead of the mandated 30 days. Solution: Work with an experienced EPC company like Sun Wave Technologies that has established relationships with DISCOM officials and can expedite approvals.
Challenge 2: Transformer Capacity Issues
Your local distribution transformer may not have capacity for bidirectional flow. Solution: Get a transformer capacity assessment before designing your system. You may need to limit export or upgrade the transformer (cost: ₹5–15 lakhs).
Challenge 3: Annual Settlement Loss
Excess credits settled annually at the Average Power Purchase Cost (APPC), which is ₹3–4/kWh — much lower than your grid tariff of ₹9–11/kWh. Solution: Size your system to minimize annual excess. Aim for 80–90% self-consumption ratio.
Challenge 4: Policy Uncertainty
States periodically revise net metering policies. Solution: Sign a net metering agreement that locks in your terms for 25 years. Most states grandfather existing installations under the policy active at commissioning time.
Net Metering vs. Open Access Solar
For large industrial consumers (connected load above 1 MW), open access solar may be a better alternative to net metering:
| Factor | Net Metering | Open Access |
|---|---|---|
| System location | On-site (rooftop/ground) | Off-site (anywhere in state) |
| Maximum capacity | 500 kW–1 MW (state dependent) | No upper limit |
| Transmission charges | None | ₹1–2.5/kWh |
| Cross-subsidy surcharge | None | ₹1–2/kWh |
| Best for | Factories with adequate roof space | Large consumers with limited roof space |
| Complexity | Low | High (regulatory approvals needed) |
Frequently Asked Questions
Can I get net metering for an industrial unit in Faridabad?
Yes. Faridabad falls under DHBVN (Dakshin Haryana Bijli Vitran Nigam), which supports net metering for industrial consumers up to 500 kW. For systems between 500 kW and 1 MW, net billing applies. Sun Wave Technologies has completed numerous net metering installations in Faridabad's industrial areas including Sector 6, Sector 24, and the Faridabad-Ballabgarh industrial belt.
How much does a net meter cost?
The bidirectional net meter typically costs ₹3,000–8,000 depending on the type (single-phase vs. three-phase) and is usually provided by the DISCOM. Some DISCOMs charge a meter installation fee of ₹1,000–5,000. Your EPC contractor handles the procurement and installation.
What happens to excess solar credits at year-end?
In most states, excess credits accumulated over the year are settled at the Average Power Purchase Cost (APPC) rate, which is typically ₹3–4/kWh. This is significantly lower than the retail tariff. That's why it's important to size your system correctly to maximize self-consumption and minimize year-end excess.
Can I get net metering with a RESCO solar installation?
Yes. Both CAPEX (EPC) and RESCO (OPEX) solar installations are eligible for net metering. In RESCO projects, the developer handles the net metering application and the credits are factored into your PPA rate.
Is net metering available for three-phase industrial connections?
Yes, net metering is available for all types of electrical connections including three-phase industrial connections. In fact, most industrial net metering installations are three-phase. The bidirectional meter must match your connection type (LT or HT).
How long does the net metering approval take in Haryana?
The official timeline is 30 days from application submission. In practice, it takes 30–45 days with DHBVN and UHBVN. Sun Wave Technologies typically completes the entire process within 35–40 days by maintaining direct coordination with DISCOM engineers and ensuring all documentation is complete at the time of submission.
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