Eko Electricity Distribution Company (EKEDC) serves as the primary distribution network operator for Lagos State, Nigeria’s largest economic hub and most active solar market. With over 600,000 registered customers across Lagos Island, Lagos Mainland, and adjacent areas of Ogun State, EKEDC handles the majority of grid-connected solar applications in Nigeria’s commercial capital. Understanding EKEDC’s specific requirements, timelines, and common rejection reasons is essential for any solar installer working in Lagos.
This guide covers the complete EKEDC solar connection process: from initial capacity assessment through to Permission to Operate (PTO). For the broader Nigerian regulatory framework, see the Nigeria solar compliance hub.
Transformer Capacity is the Main Bottleneck
The most common reason for EKEDC solar application delays is insufficient distribution transformer capacity. Many areas in Lagos, particularly on Lagos Island and high-density mainland zones, have transformers operating near full load. EKEDC may require a transformer upgrade before approving large commercial solar connections. Always verify transformer capacity before quoting installation timelines to clients.
EKEDC Service Area and Grid Infrastructure
EKEDC’s franchise covers some of Nigeria’s most densely populated and economically active zones:
| Zone | Coverage | Grid Characteristics |
|---|---|---|
| Lagos Island | Ikoyi, Victoria Island, Lekki, Lagos Island | Generally stable grid, newer infrastructure, higher transformer capacity |
| Lagos Mainland | Ikeja, Yaba, Surulere, Ikorodu, Apapa | Mixed infrastructure, older transformers in some areas, frequent outages |
| Ogun State | Ado-Odo/Ota, Ifo | Expanding grid, newer installations, lower existing solar penetration |
Grid Reliability by Area
| Area | Average Daily Grid Hours | Typical Outages | Solar Attractiveness |
|---|---|---|---|
| Victoria Island/Ikoyi | 18–20 hours | 1–2 brief outages | High (backup + savings) |
| Lekki Phase 1 | 16–18 hours | 2–3 outages | High |
| Ikeja GRA | 16–18 hours | 2–3 outages | High |
| Surulere/Yaba | 12–16 hours | 3–5 outages | Very High (significant backup value) |
| Ikorodu | 10–14 hours | 4–6 outages | Very High |
Net Metering Rules Under EKEDC
EKEDC operates under NERC’s Net Metering Regulations, which allow customers to offset imported electricity with exported solar generation.
Key Net Metering Parameters
| Parameter | Value | Notes |
|---|---|---|
| Maximum capacity (commercial) | 1 MW | Above 1 MW requires mini-grid license |
| Maximum capacity (residential) | 50 kW | Typical residential systems are 3–10 kW |
| Billing mechanism | Net metering | Monthly netting of imports vs exports |
| Export credit rate | Generation cost | Approx. ₦35–45/kWh (varies monthly) |
| Credit validity | 12 months | Unused credits expire after 1 year |
| Meter type | Bidirectional | EKEDC supplies and installs |
| Meter cost | Customer bears | Typically ₦150,000–300,000 |
Commercial vs Residential Comparison
| Factor | Residential | Commercial |
|---|---|---|
| Typical system size | 3–10 kW | 50 kW – 1 MW |
| Average daily consumption | 10–30 kWh | 500–10,000 kWh |
| Grid reliability impact | Moderate | High (significant cost savings) |
| Payback period | 5–7 years | 3–5 years |
| Transformer capacity issues | Rare | Common for systems >100 kW |
| Application complexity | Standard | May require load study |
Application Process and Timeline
Engage EKEDC Early
Before beginning any solar project in the EKEDC area, contact the Commercial Department at your nearest EKEDC business unit. They can provide preliminary guidance on transformer capacity, estimated timelines, and any known issues in your area. Early engagement can prevent costly surprises mid-project.
Step-by-Step Application
Confirm EKEDC service area and transformer capacity
Verify your property is within EKEDC’s franchise area. Contact EKEDC’s Commercial Department with your meter number to check if the local distribution transformer has sufficient spare capacity. For systems above 100 kW, EKEDC may require a formal load flow study.
Engage a NEMSA-licensed solar contractor
Select a contractor registered with NEMSA who has experience with EKEDC net metering projects. Request references from recent EKEDC-connected installations. The contractor must hold a valid electrical contractor’s license.
Prepare technical documentation
Work with your contractor and a COREN-registered engineer to prepare: single-line diagram, equipment datasheets with IEC certifications, structural assessment (for rooftop), site plan, and contractor’s NEMSA registration certificate.
Submit application to EKEDC
Submit the completed net metering application with all supporting documents to EKEDC’s Commercial Department. Pay the application fee (₦50,000–100,000). Obtain an acknowledgement receipt with a tracking number.
Pass EKEDC technical inspection
EKEDC engineers will inspect the site within 3–4 weeks. They verify equipment standards, installation quality, protection systems, and metering. Address any deficiencies promptly and request re-inspection.
Install bidirectional meter and receive PTO
After passing inspection, EKEDC installs the bidirectional meter. Commission the system with your contractor present. Receive the Permission to Operate (PTO) certificate. Only then energise the solar system.
Timeline Breakdown
| Stage | Duration | Common Delays |
|---|---|---|
| Application review | 2 weeks | Incomplete documentation |
| Technical assessment | 3–4 weeks | Transformer capacity issues |
| Meter installation | 2–3 weeks | Meter procurement delays |
| PTO issuance | 1–3 weeks | Outstanding fees or corrections |
| Total | 8–12 weeks | Can extend to 16+ weeks |
Technical Requirements
Equipment Standards
All solar equipment connected to the EKEDC grid must meet these standards:
| Equipment | Required Standard | Certification Body |
|---|---|---|
| Solar PV modules | IEC 61215, IEC 61730 | IEC or equivalent |
| Inverters | IEC 62109, IEC 62116 | NEMSA Type Test Certificate |
| Mounting structures | Nigerian Building Code | Structural engineer sign-off |
| Cables | IEC 60227, IEC 60502 | Manufacturer certification |
| Protection devices | IEC 60947 series | Manufacturer certification |
Protection Requirements
| Protection | Requirement | Notes |
|---|---|---|
| Overcurrent protection | Required on DC and AC sides | Sized per IEC 60364-7-712 |
| Surge protection | Type 2 SPD minimum | Required for all rooftop systems |
| Grounding | TN-S or TT system | Must comply with Nigerian Electrical Code |
| Anti-islanding | Inverter built-in | IEC 62116 compliance mandatory |
| DC arc fault | AFCI for systems >10 kW | Recommended for all systems |
Costs and Economics
Typical System Costs in Lagos (2026)
| System Size | Cost (₦) | Cost (USD) | Annual Savings | Payback |
|---|---|---|---|---|
| 5 kW residential | ₦3.5–4.5M | $2,200–2,800 | ₦600–800K | 5–7 years |
| 20 kW commercial | ₦12–16M | $7,500–10,000 | ₦2.5–3.5M | 4–5 years |
| 100 kW commercial | ₦55–70M | $34,000–43,000 | ₦12–16M | 3.5–4.5 years |
| 500 kW industrial | ₦250–320M | $155,000–200,000 | ₦60–80M | 3–4 years |
EKEDC-Specific Costs
| Cost Item | Amount | Notes |
|---|---|---|
| Application fee | ₦50,000–100,000 | One-time, non-refundable |
| Bidirectional meter | ₦150,000–300,000 | Customer bears cost |
| Inspection fee | ₦25,000–50,000 | Per inspection visit |
| Transformer upgrade | ₦500K–5M+ | If required due to capacity |
| Annual maintenance | ₦50,000–200,000 | Cleaning, inspection, minor repairs |
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Common Issues and Solutions
| Issue | Cause | Solution |
|---|---|---|
| Transformer capacity rejection | Local transformer at full load | Request upgrade or reduce system size |
| Documentation rejection | Missing NEMSA certificate | Ensure all equipment has valid certifications |
| Long inspection delays | High application volume | Apply during low-demand periods (rainy season) |
| Meter procurement delay | EKEDC meter stock shortage | Follow up weekly, escalate through customer service |
| Incorrect export credits | Meter calibration issue | Request meter recalibration from EKEDC |
| Outstanding bill rejection | Customer has arrears | Clear all outstanding bills before applying |
Comparison: EKEDC vs Other Lagos-Area DISCOs
| Factor | EKEDC | Ikeja Electric (IE) | Eko Atlantic (private) |
|---|---|---|---|
| Franchise area | Lagos Island, Mainland | Ikeja, Abule Egba, Otta | Eko Atlantic only |
| Net metering cap | 1 MW | 1 MW | Varies (bilateral) |
| Grid reliability | Moderate (12–18 hrs/day) | Moderate (12–18 hrs/day) | High (24 hrs via backup) |
| Application timeline | 8–12 weeks | 8–12 weeks | 4–6 weeks |
| Solar penetration | High (most active market) | Moderate | Very Low |
| Common issue | Transformer capacity | Billing disputes | Limited to Eko Atlantic |
Frequently Asked Questions
What is the maximum solar capacity allowed under EKEDC net metering?
EKEDC permits net-metered solar systems up to 1 MW in capacity for commercial and industrial customers. Residential systems are typically limited to 50 kW. The system must be designed to export surplus energy to the EKEDC grid and receive credits at the prevailing generation cost rate. Systems above 1 MW require a bilateral agreement under the NERC Mini-Grid Regulations rather than standard net metering.
How long does EKEDC take to process a solar connection application?
EKEDC’s solar connection process typically takes 8–12 weeks from complete application to Permission to Operate (PTO). The timeline breaks down as: initial application review (2 weeks), technical assessment and site inspection (3–4 weeks), meter installation and commissioning (2–3 weeks), and final approval and PTO issuance (1–3 weeks). Delays often occur if the application is incomplete or if the distribution transformer serving the area lacks capacity.
What documents are required for EKEDC solar connection?
Required documents include: completed EKEDC net metering application form, copy of customer’s electricity bill (last 3 months), electrical single-line diagram endorsed by a COREN-registered engineer, equipment datasheets and certifications (IEC 61215, IEC 61730, IEC 62109), NEMSA Type Test Certificate for the inverter, site plan showing panel layout and meter location, structural assessment report (for rooftop systems), contractor’s registration certificate with NEMSA, and proof of insurance (minimum ₦5 million professional indemnity).
Does EKEDC allow net metering for residential customers?
Yes, EKEDC offers net metering for residential customers under the NERC Net Metering Regulations. Residential systems are typically capped at 50 kW. Customers receive credit for exported energy at the generation cost rate, which is lower than the retail tariff. The payback period for residential solar in Lagos under EKEDC is typically 4–6 years, depending on system size and energy consumption pattern.
What are the common reasons for EKEDC rejecting a solar application?
Common rejection reasons include: incomplete documentation (missing NEMSA certificates or unsigned SLD), insufficient distribution transformer capacity in the area (EKEDC may require transformer upgrade), non-compliance with IEC standards for equipment, unregistered contractor (must be NEMSA-licensed), existing outstanding electricity bill arrears, and safety concerns such as inadequate grounding or protection systems. Rejected applications can be resubmitted after addressing the identified issues.
