Sikkim
The Government of Sikkim has introduced the Grid Connected Rooftop Solar Photovoltaic (SPV) System Policy, 2019 to promote the adoption of solar energy across the state. This policy provides a structured framework for integrating rooftop solar photovoltaic (PV) systems with the state’s electricity grid, offering consumers net metering arrangements to encourage renewable energy usage.
Net Metering
Description:
- Allows consumers to generate solar energy primarily for self-consumption.
- Surplus energy exported to the grid is adjusted against the energy imported from the grid in the billing period.
- Excess generation after set-off is carried forward to the next billing cycle within the settlement period (financial year).
Eligibility:
- Available to all consumer categories, including residential, commercial, and industrial consumers.
Benefits:
- Reduces electricity bills by offsetting consumption with self-generated solar energy.
- Encourages self-sufficiency in energy consumption.
Capacity Limits and Supply Voltage for LT and HT Consumers
LT Consumers:
- For systems up to 3 kW: Supply voltage is 230 V, Single Phase.
- For systems up to 112 kW: Supply voltage is 415 V, Three Phase.
HT Consumers:
- For systems above 112 kW and up to 2 MW: Supply voltage is 11 kV or higher, depending on the utility's infrastructure and consumer requirements.
Interconnection and Metering Arrangements for HT Consumers
- HT Consumers (11 kV & above) may install and connect Renewable Energy Based Power Plants at their LT Bus Bar System.
- The Net or Gross Meter must be installed on the HT side of the transformer to accurately measure energy transactions.
Financial Incentives and Support
Subsidies and Incentives
Central and state government subsidies may be available for the installation of rooftop solar PV systems, reducing the initial investment cost.
Banking
Provisions for banking of energy are available as per Sikkim State Electricity Regulatory Commission (SSERC) regulations, facilitating energy management for consumers with solar installations.
Wheeling Charges
Waiver or reduction in wheeling and transmission charges as per SSERC orders to encourage open access and captive solar use.
LT and HT Tariff Structure in Sikkim (FY 2024–25)
| Category | Fixed Charges | Energy Charges |
|---|---|---|
| 1. Domestic Consumers (LT) | ₹90 per kW/month |
First 100 Units: ₹5.55 per kWh Next 100 Units: ₹5.65 per kWh |
| 2. Industrial Consumers (HT) | ₹310 per kVA/month | ₹6.51 per kWh |
Rebates & Penalties
- Prompt Payment Rebate: 1% if payment made within 7 days
- Delayed Payment Surcharge: 1.25%/month
- Power Factor Incentives: Up to 1% rebate for PF ≥ 0.95; penalties apply for PF < 0.85
Why Choose Sikkim's Solar Rooftop Policies?
Flexible Metering Options
Consumers can choose net metering based on their energy consumption patterns and financial considerations.
Financial Benefits
Subsidies and incentives reduce the cost of solar installations, and favorable tariffs enhance the return on investment.
Sustainability
Adopting solar energy contributes to environmental sustainability and aligns with global efforts to combat climate change.
For detailed guidelines or to explore solar integration options, please refer to the Grid Connected Rooftop Solar Photovoltaic (SPV) System Policy, 2019 and the latest SSERC tariff orders.
Note: This information is based on the Grid Connected Rooftop Solar Photovoltaic (SPV) System Policy, 2019, and SSERC tariff schedule effective from April 1, 2024. Please consult official notifications or contact the Sikkim Renewable Energy Development Agency (SREDA) for current updates.