What turnkey EPC includes
An RaySmartSolar industrial EPC contract covers the full lifecycle:
- Engineering — site survey, structural load analysis, electrical single-line diagrams, string layout, cable sizing, earthing design, lightning protection.
- Procurement — Tier-1 panels (Longi, Jinko, JA Solar, Canadian Solar, Trina), industrial-grade inverters (Sungrow, Huawei, Goodwe, Solis), structures, cables, switchgear, monitoring.
- Construction — civil foundations for ground-mount, structural reinforcement for rooftop, panel installation, DC and AC cabling, switchgear assembly, transformer integration where required.
- Commissioning — string testing, IV curve tracing, performance ratio verification, DISCO concurrence, energisation, handover documentation.
- Operations & maintenance — annual contracts available; remote SCADA monitoring; quarterly cleaning; thermal imaging inspections; warranty management.
Equipment standards we use
For industrial EPC we standardise on:
- Panels — Bloomberg Tier-1 N-type TOPCon bifacial modules, 580–625W class. Bifacial modules add 5–15% extra yield on white-painted rooftops or ground-mount with reflective ground cover.
- Inverters — Sungrow SG-CX series (110–250kW string inverters) or central inverters above 1MW. Huawei SUN2000-MA, Goodwe HT, and Solis S6 are common alternatives.
- String monitoring — per-string current sensing for fault isolation across thousands of modules.
- SCADA + remote alarms — 24/7 visibility into plant performance, with WhatsApp/email alerts on string-level faults.
- Galvanised mounting structures — engineered for 150 km/h wind loads, 25-year design life.
Compliance and certifications
Industrial-scale solar in Pakistan touches multiple regulators:
- NEPRA — Prosumer Regulations 2026 (SRO 251(I)/2026) for net billing; generation licence for ≥1MW behind-the-meter or wheeling configurations.
- AEDB — Alternative Energy Development Board certification for installers; PPIB AEDB Category C-3 listing for grid-connected solar EPC.
- PEC — Pakistan Engineering Council EE-11 (Energy Engineering) registration for designing systems above 100kW.
- DISCO — Distribution company concurrence (LESCO, IESCO, MEPCO, GEPCO, FESCO, HESCO, SEPCO, PESCO, QESCO) for grid interconnection, AMI smart-meter installation, and bidirectional metering.
We handle all of this in-house as part of the EPC scope — you don't deal with multiple agencies.
Financial modelling and IRR
Every industrial EPC quote includes a 20-year financial model with:
- Year-by-year energy production accounting for 0.5%/year panel degradation.
- Self-consumed kWh × current commercial tariff (B-3, B-4, or industrial slabs).
- Exported kWh × net-billing rate (~PKR 11/unit) where applicable.
- Annual O&M cost (typically PKR 1,500–2,500 per kW).
- Inverter replacement provision in years 10–12.
- NPV, IRR, payback period, and lifetime savings vs grid-only baseline.
For industrial customers paying PKR 50–60/unit, IRR routinely lands between 12% and 18% — comfortably above most alternative investment opportunities in Pakistan.
Hybrid for industrial
For factories on a 24/7 production schedule, or for any operation where a grid trip costs more than the cost of a battery bank per hour of downtime, hybrid + battery is the right architecture. See battery storage for details on industrial-scale lithium banks (100kWh – 1MWh) and inverter strategies for behind-the-meter peak shaving.
Frequently asked questions
What is the IRR on a 500kW industrial solar system?
For a Pakistani factory on the industrial tariff, a properly engineered 500kW system typically delivers 14–18% IRR over 20 years, with payback in 4 to 6 years. Exact figures depend on consumption profile, tariff slab, and how much is self-consumed vs exported under net billing.
Are you AEDB / PPIB / PEC certified?
Yes — we operate as a PPIB AEDB Category C-3 listed installer for grid-connected solar EPC. Our lead engineers carry PEC EE-11 (Energy Engineering) registration required for systems above 100kW. Certification details and registration numbers are shared at the proposal stage.
Can my factory roof handle the load?
Most industrial sheds can take an additional 18–25 kg/m² of solar dead load with proper purlin reinforcement. We perform a structural assessment as part of the engineering scope and reinforce trusses where needed. Where the roof isn't viable, we offer ground-mount on adjacent vacant land.
How long does an industrial EPC project take?
From signed contract to energisation: 200kW around 30–45 days, 500kW around 60–90 days, 1MW around 90–120 days. Engineering and procurement happen in parallel with civil works to compress the timeline.
Do you provide post-installation O&M?
Yes. We offer annual O&M contracts including quarterly panel cleaning, thermal imaging inspections, inverter firmware updates, SCADA monitoring with 24/7 alarm response, and warranty management. Pricing typically PKR 1,500–2,500 per kW per year.
What financing options exist for industrial solar in Pakistan?
Several Pakistani banks (HBL, Meezan Bank, Bank Alfalah, Bank of Punjab) offer SBP-backed solar financing for SMEs and industrial customers up to 5–7 year tenor. We can introduce you to bank partners; final approval terms come from the lender.
Can I export to the grid under net billing if my solar exceeds my factory load?
Yes — exports are credited at roughly PKR 11/unit (the National Average Energy Purchase Price) under the 2026 Prosumer Regulations. This is lower than the old 1:1 net-metering rate, so we right-size systems to maximise self-consumption rather than overbuilding for export.