Sanctioned Load

What Is Sanctioned Load?

The sanctioned load appears on every electricity bill, usually in the connection details section alongside the consumer number, meter number, and tariff category. It also appears in the original service agreement signed when the connection was first established. For a typical Indian household, sanctioned load ranges from 3 kW to 10 kW. Small commercial establishments such as shops and clinics fall in the 5 kW to 50 kW range. Larger industrial connections do not use the term “sanctioned load”; they use contract demand measured in kVA.

The sanctioned load serves three critical functions. First, it defines the protection device rating, ensuring that sustained overloads trip the connection before cable insulation damage or fire risk occurs. Second, it determines the fixed monthly demand charge that appears on the bill regardless of consumption. Third, and most importantly for solar consumers, in many states it caps the rooftop solar capacity that the DISCOM will permit under net metering.

Why Sanctioned Load Matters

Sanctioned load is the invisible gatekeeper for rooftop solar in India. A consumer cannot simply install as much solar as their roof can hold; in many states the DISCOM will approve net metering only up to the sanctioned load. Gujarat is an exception for residential consumers.

Solar capacity ceiling. Many state SERCs, including Maharashtra’s, require that rooftop solar capacity not exceed the consumer’s sanctioned load. In those states, a homeowner with 5 kW sanctioned load can install 5 kWp of solar, and a shop with 10 kW sanctioned load can install 10 kWp. Gujarat’s GERC removed this cap for residential consumers in 2022. This rule exists for technical safety reasons: the service line and distribution transformer are rated for the sanctioned current, and solar export flowing in the reverse direction must not exceed this rating.

Fixed charge impact. Many DISCOMs levy a fixed monthly charge linked to load, and the structure varies by state. Gujarat’s FY 2026-27 residential tariff charges Rs 15 to Rs 70 per month per installation, by connected-load slab. Enhancing sanctioned load to accommodate more solar increases this fixed cost, though the solar generation benefit usually far outweighs the increment.

Connection safety. The sanctioned load ensures that the consumer’s installation operates within the thermal and current-carrying limits of the service infrastructure. Exceeding sanctioned load risks cable overheating, voltage drop, and protection device failure.

Property value and resale. A higher sanctioned load is often viewed favourably in property transactions because it signals capacity for modern appliances, air conditioning, and solar expansion.

How Sanctioned Load Works

The lifecycle of sanctioned load spans application, approval, billing, monitoring, and revision:

1. Initial application: When applying for a new electricity connection, the consumer submits a load declaration form listing all expected appliances, their ratings, and estimated usage patterns. The DISCOM engineer verifies the declaration against transformer capacity and feeder load before approving the sanctioned load.

2. Infrastructure provisioning: The DISCOM installs a service cable rated for the sanctioned current, an energy meter with appropriate current rating, and a protection device (typically an MCB or fuse) sized to trip at sustained overload.

3. Billing: The monthly bill includes a fixed charge proportional to sanctioned load, plus variable energy charges based on actual kWh consumption. The fixed charge is due even if the consumer uses zero units.

4. Monitoring: The energy meter records maximum demand during each billing cycle. If recorded demand consistently approaches or exceeds sanctioned load, the DISCOM may flag the connection for review.

5. Revision: Consumers may apply for load enhancement or reduction. Enhancement requires feasibility verification, possible cable upgrade, meter replacement, and payment of enhancement charges. Reduction requires demonstration that recent demand has stayed below the proposed new level.

Visual Explanation

Real-World Example

A family in Vadodara, Gujarat, lives in a 3-bedroom home with a 5 kW sanctioned load. Their monthly consumption averages 450 kWh, and their bill under GERC’s FY 2026-27 residential (RGP) tariff shows:

• Sanctioned load: 5 kW
• Fixed charge (connected load above 4 kW and up to 6 kW): Rs 45 per month
• Energy charges: 450 kWh across the slabs (Rs 3.05, Rs 3.50, Rs 4.15 and Rs 5.20 per unit) = Rs 1,990
• Total (before fuel surcharge and electricity duty): Rs 2,035

The family wants to install 7 kWp of solar under PM Surya Ghar to offset rising electricity costs and power a new air conditioner. In Gujarat, sanctioned load does not block this. GERC’s 2022 amendment allows residential rooftop solar irrespective of sanctioned load, and for systems up to 10 kW the application is deemed accepted without a technical feasibility study, with any load enhancement needed carried out by the DISCOM (GERC Fourth Amendment, 2024). The real choice is about size and cost.

Option 1: Install 7 kWp

• No separate load-enhancement application; MGVCL carries out any enhancement needed
• System-strengthening charges apply to the 1 kW above 6 kW, at MGVCL’s per-kW rate for new LT load
• PM Surya Ghar subsidy of Rs 78,000 (the maximum, reached at 3 kW)
• Annual solar generation: ~10,500 kWh, far above the family’s current ~5,400 kWh a year, so much of it would be surplus that MGVCL buys at Rs 2.25 per unit for the first five years

Option 2: Install 5 kWp

• No system-strengthening charges, because capacity stays within 6 kW
• The same Rs 78,000 subsidy
• Annual solar generation: ~7,500 kWh, closer to the family’s consumption once the air conditioner is running

The family sizes the system to its expected consumption rather than to its sanctioned load. In Gujarat, sanctioned load no longer limits residential rooftop capacity, but surplus units earn only Rs 2.25 each, well below the Rs 4.15 to Rs 5.20 a unit the family pays on its top slabs.

Technical Specifications / Benchmarks

Benefits / Advantages

• Clear solar capacity reference: In states that cap capacity, sanctioned load provides a documented, unambiguous ceiling for rooftop solar sizing under net metering.
• Safety assurance: The service infrastructure is engineered to handle the sanctioned current in both import and export directions, reducing fire and equipment failure risk.
• Predictable fixed costs: Fixed charges based on sanctioned load are known in advance, enabling accurate monthly budgeting.
• Enhancement pathway: DISCOMs provide a formal process to increase sanctioned load, allowing consumers to grow their electrical capacity and solar installation over time.
• Subsidy clarity: PM Surya Ghar’s subsidy is capped at 3 kW whatever the sanctioned load; any link between capacity and sanctioned load comes from state net-metering rules, not the subsidy.
• Property value: Higher sanctioned load signals modern electrical capacity, a positive factor in property valuation and resale.
• Transformer protection: Aggregated sanctioned loads inform DISCOM transformer sizing, preventing overload of distribution transformers serving multiple consumers.

Limitations / Drawbacks

• Solar capacity constraint: The sanctioned load cap can prevent consumers from installing optimally sized solar systems, especially on large roofs with high generation potential.
• Enhancement delays: Load enhancement applications can take 2 weeks to 3 months, delaying solar installation timelines.
• Fixed charge increase: Enhancing sanctioned load raises monthly fixed charges, which some consumers perceive as a disincentive despite the solar offset.
• State-by-state variation: Rules on whether solar can exceed sanctioned load, and by how much, differ across states, see this net metering rules in India guide for a state-level breakdown, creating confusion for multi-location consumers.
• Physical upgrade requirements: Large enhancements may require service cable replacement, meter upgrade, or even distribution transformer augmentation, adding cost and delay.
• Connected load confusion: Consumers often confuse sanctioned load with connected load (the sum of all appliance ratings), leading to incorrect solar sizing assumptions.
• Not applicable to ground-mount: Sanctioned load rules apply to rooftop net metering, not to ground-mount solar with dedicated evacuation infrastructure.

Comparison Section

Sanctioned load applies to LT (low-tension) consumers; understanding HT vs LT connection classification clarifies why large industrial consumers use contract demand instead, and why connected load is a separate, unregulated figure that consumers sometimes confuse with the DISCOM-approved limit.

Applications

• Residential homes: In states that cap capacity at sanctioned load, a sanctioned load of 3 kW to 10 kW sets the ceiling for PM Surya Ghar systems. Gujarat homes are not capped this way, and most install 3 kWp to 7 kWp.
• Small commercial: Shops, restaurants, and clinics with 5 kW to 20 kW sanctioned load use rooftop solar to offset high commercial tariffs, with capacity capped at sanctioned load where the state rules require it.
• Educational institutions: Schools and colleges with LT connections enhance sanctioned load to accommodate solar installations across multiple buildings.
• Hospitals and clinics: Healthcare facilities with critical power needs maintain sanctioned load headroom for backup systems while sizing solar within the approved limit.
• Government buildings: Panchayat offices, post offices, and municipal buildings enhance sanctioned load to support larger solar installations under government green building mandates.
• Agricultural pump connections: While many agricultural connections have separate rules, LT pump connections with sanctioned load use the same framework for any auxiliary solar installation.

Industry Standards & Regulations

• Electricity Act 2003: Provides the statutory basis for consumer connections, tariff regulation, and DISCOM obligations.
• State DISCOM supply codes: Each DISCOM’s supply code details the process for load application, enhancement, metering, and billing based on sanctioned load.
• IS 732: Wiring rules that specify safe cable sizing, protection device selection, and installation practices based on declared load.
• State SERC tariff orders: Define fixed charge rates, penalty structures for exceeding sanctioned load, and solar net metering capacity caps.
• MNRE PM Surya Ghar guidelines: Route requests for net metering and load sanctions through the National Portal; capacity caps come from state regulations, not MNRE.
• CEA Connectivity Regulations 2019: Technical standards for metering, protection, and grid interaction that underpin sanctioned load implementation.

India-Specific Context

India’s residential solar revolution under PM Surya Ghar has made sanctioned load a household term. Gujarat leads all states with 5,15,052 PM Surya Ghar installations by 31 December 2025 (MNRE figures released through PIB). It no longer ties residential rooftop capacity to sanctioned load (GERC, 2022), and for systems up to 10 kW the DISCOM (UGVCL, MGVCL, PGVCL or DGVCL) carries out any load enhancement needed itself (GERC, 2024).

Maharashtra takes the opposite approach: MERC caps rooftop capacity at the consumer’s sanctioned load or contract demand, and limits net metering to 5 MW or that load, whichever is lower. For systems up to 10 kW, MERC also makes the DISCOM carry out any load enhancement needed. Because the net-metering process and paperwork also vary by DISCOM, it is worth checking a state-by-state DISCOM net metering process guide before applying.

Rules in other states, such as Tamil Nadu, Andhra Pradesh and Delhi, differ again, so check the current SERC regulation before sizing a system there.

Heaven Green Energy, Gujarat’s #1 ranked PM Surya Ghar installer, conducts sanctioned load verification as the first step in every residential solar consultation. Our team checks the latest electricity bill, advises on enhancement if needed, and handles the DISCOM application process as part of our turnkey residential solar service.

Future Trends

• Dynamic sanctioned load: DISCOMs could move to “dynamic” sanctioned load models where the approved load adjusts seasonally or based on real-time transformer capacity, reducing the need for formal enhancement applications.
• Higher default loads: New homes may be planned with higher sanctioned loads, such as 7 kW to 10 kW, to allow for solar and EV charging.
• Solar-plus-EV integration: As electric vehicle adoption grows, consumers are enhancing sanctioned load to accommodate both rooftop solar and home EV charging, typically requiring 10 kW to 15 kW for a modern home.
• Automated enhancement portals: DISCOMs are digitising load enhancement applications, and the PM Surya Ghar National Portal already handles requests for net metering and load sanctions for residential rooftop solar.
• Smart meter integration: Smart meters with remote load profiling may eventually allow DISCOMs to offer automatic sanctioned load optimisation suggestions based on actual consumption patterns.

Common Mistakes & Misconceptions

• Designing solar without checking sanctioned load: In states that cap capacity at sanctioned load, this is a common cause of DISCOM rejection of net-metering applications. Always verify the current sanctioned load before finalising solar system size.
• Confusing sanctioned load with connected load: Connected load is the sum of all appliance ratings. Sanctioned load is the approved maximum draw. They are not the same, and where a state caps solar, it is capped at sanctioned load, not connected load.
• Assuming one rule applies everywhere: Gujarat allows residential rooftop solar irrespective of sanctioned load, while Maharashtra caps it at 100% of sanctioned load. Never assume; verify the latest SERC order.
• Forgetting to apply for enhancement before solar installation: In states that cap capacity, systems above 10 kW generally need the sanctioned load to match planned solar capacity first. For systems up to 10 kW, Gujarat and Maharashtra regulations make the DISCOM carry out any enhancement needed.
• Ignoring fixed charge implications: While enhancing sanctioned load can increase fixed charges, the solar savings typically dwarf this increment. Consumers sometimes reject optimal solar sizing over a small monthly increase.
• Treating sanctioned load as permanent: Sanctioned load can be enhanced or reduced through formal application. It is not a lifetime fixed value.
• Overlooking meter replacement needs: Large load enhancements may require upgrading from a single-phase to three-phase meter, or from a lower-current to higher-current rating, adding cost and delay.
• Neglecting to update agreement documents: After enhancement, ensure the DISCOM issues an updated connection agreement reflecting the new sanctioned load before submitting the solar application.

Key Takeaways

• Sanctioned load is the maximum electrical load in kW or kVA approved by the DISCOM for a consumer’s LT connection, appearing on every electricity bill.
• Many Indian states cap rooftop solar capacity at sanctioned load, making it the critical first check before solar system design; Gujarat does not for residential consumers.
• Load enhancement is a straightforward DISCOM application process, with costs and timelines that vary by DISCOM; for rooftop solar up to 10 kW, Gujarat and Maharashtra make the DISCOM handle it.
• Enhancing sanctioned load slightly increases monthly fixed charges, but the additional solar generation benefit almost always outweighs this cost.
• Sanctioned load is distinct from connected load (total appliance ratings) and contract demand (the HT equivalent measured in kVA).
• Always verify the latest state SERC order for solar capacity rules: Gujarat imposes no sanctioned-load cap on residential rooftop solar, while Maharashtra enforces a 100% cap.
• For new construction, declare a higher initial sanctioned load (7 kW to 10 kW for homes) to accommodate future solar and EV charging without later enhancement.
• Ground-mount solar with dedicated evacuation does not use sanctioned load as a capacity reference; the concept applies primarily to rooftop net metering.

Related Glossary Terms

Related Resources

• PM Surya Ghar Complete Guide
• Home Solar System Size Guide
• 3kW vs 5kW vs 10kW Home Solar
• Solar Installation Day by Day
• Net Metering in India
• Residential Solar Solutions
• Solar Savings Calculator
• Solar Modules
• Turnkey Ground Solar EPC

Sources & References

• Electricity Act, 2003 (Government of India)
• State DISCOM Supply Codes (UGVCL, MGVCL, PGVCL, DGVCL, MSEDCL, BESCOM, TANGEDCO)
• Bureau of Indian Standards (BIS), IS 732: Wiring Rules
• Ministry of New and Renewable Energy (MNRE), Rooftop Solar Guidelines
• State SERC Tariff Orders (Gujarat, Maharashtra, Karnataka, Tamil Nadu, Delhi)
• Central Electricity Authority (CEA), Connectivity Regulations 2019
• Heaven Green Energy internal project database (residential solar consultations, Gujarat)