What Is Net Metering with HESCO?
Net metering is a billing arrangement that allows HESCO consumers who install solar panels to feed excess electricity back into the grid and receive a credit on their bill. When your solar panels produce more electricity than you consume during the day, the surplus goes to the HESCO grid. At night or during cloudy periods when your panels produce less, you draw from the grid as normal. Your net bill is the difference between what you consumed and what you exported.
The NEPRA (National Electric Power Regulatory Authority) net metering regulations apply to all DISCOs including HESCO. Any HESCO consumer with a sanctioned three-phase connection and sufficient rooftop space can apply for net metering. The maximum allowed solar capacity under net metering is typically up to the consumer's sanctioned load, with a cap that NEPRA adjusts periodically.
For HESCO consumers in Sindh, solar energy is particularly attractive because the province receives some of the highest solar irradiance in Pakistan — averaging 5.5–6.5 kWh per square meter per day. This means a solar system in Hyderabad or Tharparkar produces significantly more electricity per panel than one installed in Lahore or Islamabad.
Eligibility Requirements for HESCO Net Metering
| Requirement | Details | Notes |
|---|---|---|
| Active HESCO connection | Must have a valid, energized connection | Both residential and commercial eligible |
| Three-phase supply | Single-phase connections must upgrade first | Upgrade application at subdivision office |
| Clear electricity dues | No outstanding unpaid bills | Clear all arrears before applying |
| Adequate rooftop space | Approximately 100 sq ft per kW of panels | Unshaded, south-facing is ideal |
| Licensed solar installer | Installation by AEDB-registered company | List available at aedb.org |
| System capacity limit | Up to sanctioned load (typically 1 MW max) | NEPRA regulation capped amount |
| Net metering application | Submitted through HESCO with required documents | Processing fee applies |
Step-by-Step: HESCO Net Metering Application
Follow these steps to apply for HESCO net metering:
- Confirm you have a three-phase HESCO connection with no outstanding dues.
- Get quotes from at least 2–3 AEDB-registered solar installers in your area.
- Choose an installer and finalize the solar system design (panel capacity, inverter size, mounting structure).
- Have the installer prepare the net metering application package including single-line diagram, equipment specifications, and installation plan.
- Submit the application to your HESCO subdivision office along with: CNIC copy, recent electricity bill, system design documents, and the installer's AEDB registration proof.
- Pay the net metering application processing fee (varies, typically Rs 1,000–5,000).
- HESCO will inspect your premises to verify the installation plan and check transformer capacity.
- After inspection approval, install the solar panels and inverter system.
- Contact HESCO for the generation meter installation and synchronization test.
- HESCO installs a bidirectional (import/export) meter and conducts safety testing.
- Once the meter is installed and tested, your net metering connection is officially active.
- Your subsequent bills will reflect net units: grid import minus solar export.
Solar System Sizing for HESCO Consumers
Choosing the right system size depends on your monthly electricity consumption, available rooftop space, and budget. Here is a guide for HESCO consumers in Sindh:
| Monthly Bill | Suggested System Size | Approximate Cost | Expected Savings |
|---|---|---|---|
| Rs 5,000–10,000 | 3 kW | Rs 350,000–500,000 | 60–80% bill reduction |
| Rs 10,000–20,000 | 5 kW | Rs 550,000–750,000 | 70–90% bill reduction |
| Rs 20,000–40,000 | 10 kW | Rs 1,000,000–1,400,000 | 80–95% bill reduction |
| Rs 40,000–80,000 | 15–20 kW | Rs 1,500,000–2,500,000 | 85–100% bill reduction |
| Above Rs 80,000 | 25+ kW | Rs 2,500,000+ | Near-zero or net-positive electricity |
Sindh's high solar irradiance means a 5 kW system in Hyderabad produces approximately 600–750 units per month (varying by season). This is enough to offset most of a typical household's consumption. In summer months, when AC usage is highest, solar production is also at its peak — making solar especially effective for managing high summer bills in HESCO's coverage area.
Financial Benefits and Payback Period
Solar net metering with HESCO provides both direct bill savings and long-term financial returns. The payback period — how long it takes for bill savings to equal the installation cost — depends on system size, consumption pattern, and current tariff rates.
| System Size | Annual Savings | Investment Cost | Payback Period |
|---|---|---|---|
| 3 kW | Rs 80,000–120,000 | Rs 350,000–500,000 | 3–5 years |
| 5 kW | Rs 130,000–200,000 | Rs 550,000–750,000 | 3–4.5 years |
| 10 kW | Rs 280,000–400,000 | Rs 1,000,000–1,400,000 | 3–4 years |
| 15 kW | Rs 400,000–600,000 | Rs 1,500,000–2,000,000 | 3–4 years |
After the payback period, your solar system continues generating free electricity for the remaining 20–25 year lifespan of the panels. With rising electricity tariffs and FPA charges, the value of solar savings increases each year. A 5 kW system installed in 2026 could save Rs 30–50 lakh in electricity costs over its lifetime.
Maintenance and Long-Term Considerations
Solar panel systems require minimal maintenance but some regular care ensures optimal performance over their 25-year lifespan:
- Clean panels every 2–4 weeks — dust accumulation in Sindh's dry climate can reduce output by 15–25%
- Check inverter display regularly for error codes or performance warnings
- Keep the area around panels clear of any new shade sources (growing trees, new construction)
- Inspect wiring and mounting brackets annually for heat damage or corrosion
- Monitor your net metering bill monthly to ensure export credits are being applied correctly
- Replace inverter after 10–12 years (panels last 25+ years but inverters have shorter lifespan)
- Keep all warranty documents and installer contact details accessible
- During monsoon season, check panels for water pooling or debris accumulation
In Sindh, the main environmental factor is dust and heat. Regular cleaning is more important here than in cooler regions. Many consumers hire a local cleaner who visits monthly to wash the panels — the cost is Rs 500–1,500 per visit and the production gain from clean panels easily justifies this expense.
Frequently Asked Questions
Can I install solar panels with HESCO net metering?
Yes. Any HESCO consumer with a three-phase connection and no outstanding dues can apply for net metering. Submit an application through your HESCO subdivision office with the required documents.
How much does HESCO net metering cost?
The net metering application fee is typically Rs 1,000–5,000. The solar system itself costs Rs 350,000–2,500,000+ depending on capacity. Total project cost includes panels, inverter, mounting, wiring, and the bidirectional meter.
How much can I save with solar in Sindh?
A typical 5 kW system in Sindh saves Rs 130,000–200,000 per year. Payback period is 3–4.5 years, after which electricity is essentially free for the remaining 20+ year panel lifespan.
Do I need a three-phase connection for net metering?
Yes. NEPRA regulations require a three-phase connection for net metering. Single-phase HESCO consumers must upgrade to three-phase first.
What happens to excess solar power I generate?
Excess power is exported to the HESCO grid and you receive a credit in units on your bill. If you export more than you import in a month, the credit carries forward to the next billing cycle.
How long does HESCO net metering approval take?
The approval process typically takes 30–60 days from application submission, depending on site inspection scheduling and transformer capacity verification.
Can I sell electricity back to HESCO?
Net metering provides bill credits, not cash payments. Your export offsets import units. At the end of the annual settlement period, any net export credit is settled at a rate determined by NEPRA.
How much roof space do I need for solar panels?
Approximately 100 square feet per kW installed. A 5 kW system needs about 500 sq ft of unshaded roof space, ideally south-facing.
What happens during load shedding with solar?
Standard net metering systems shut down during grid outages for safety. To have power during load shedding, you need a hybrid inverter with battery backup — this is a separate setup from basic net metering.
Which companies install solar for HESCO net metering?
Use AEDB-registered (Alternative Energy Development Board) solar companies for guaranteed quality and compliance with NEPRA net metering requirements. Check aedb.org for the registered installer list.