Fusion PVD Coating rooftop solar
Solar PV Proposal · Confidential

Powering Fusion PVD Coating with the Sun

A turnkey 78.5 kWp rooftop solar PV system — engineered to offset 100% of annual grid energy, with a 2.2-year payback and an export-control device for compliant net surplus.

Executive Summary

A self-funding energy asset for Fusion PVD Coating

Based on 12 months of LESCO billing history (Jul 2025 – Jun 2026), we recommend a roof-mounted solar PV system sized to the available 54 × 104 ft roof area and the site's real consumption profile.

78.5
kWp
Recommended roof-mounted capacity
109
panels
Trina Vertex N 720W (N-type TOPCon)
100%
offset
Of annual grid energy consumption
2.2
years
Simple payback period
Data note: The supplied billing figures contained arrears/adjustment line items (e.g. Jul-25 at Rs 4,597/unit, a negative Aug-25 bill, Feb/Jun inflated). We stripped these and used a verified effective energy rate of ≈ Rs 60/unit. The Jun-26 MDI of 1 kW is a data-entry error and was excluded (peak MDI = 59 kW).
Consumption Analysis

What the 12-month LESCO history tells us

Annual consumption is 58,800 KWH with a clear ramping-load pattern — steady months of 280–12,480 KWH punctuated by a March peak of 25,280 KWH.

MetricValue
Annual consumption58,800 KWH
Average monthly4,900 KWH
Peak monthMar-26 · 25,280 KWH
Average MDI44.25 kW
Peak MDI59 kW
Verified rate≈ Rs 60 / unit
Annual bill (energy)≈ Rs 3.53M

Roof area is the binding constraint

The 54 × 104 ft roof = 5,616 sqft gross. Each Trina 720W panel occupies 33.4 sqft. At a 35% maintenance-walkway allowance, the roof physically fits a maximum of 109 panels = 78.5 kWp. A 180 kWp system would require ~7,741 sqft of additional ground mount — not available on this footprint.

The LESCO MDI / sanctioned-load net-metering cap does not block this system: an export-control device (limited-export-after-consumption) is installed, so the site self-consumes first and the device caps any export to the surplus after on-site use.
Recommended System

78.5 kWp rooftop solar PV — roof-only

Engineered to the roof's real capacity, fully permitted under the export-control regime, and sized to cover 100% of annual consumption.

☀️

Array

109 × Trina Vertex N 720W (TSM-NEG21C.20) — N-type TOPCon bifacial modules, 250-year linear warranty class.

⚡

Inverter

~85 kW three-phase string inverter (1.1× oversizing headroom) with remote monitoring and grid-compliant protection.

🔒

Export Control

Limited-export-after-consumption device caps surplus export per LESCO terms; self-consumption always prioritised.

📐

Layout

109 panels in optimised rows on the 54×104 ft roof at 35% walkway — serviceable, shaded-minimised orientation.

🛰️

Monitoring

Per-string performance telemetry + alerting; monthly generation vs consumption reporting to Fusion facilities.

🏗️

Mounting

Ballasted/aluminium rail system, roof-load verified, zero penetration where structure permits.

Why 78.5 kWp and not 180 kWp

Roof area decides — not MDI

  • Roof physically caps at 109 panels (78.5 kWp) without ground mount.
  • 78.5 kWp already generates 109,998 KWH/yr — exceeds the 58,800 KWH annual demand.
  • 100% of annual grid energy offset; ~51,198 KWH/yr surplus exported via the control device.
  • 180 kWp only justified with ~7,741 sqft ground mount AND LESCO export credit — otherwise worse payback.
Financial Case

The numbers that matter

Conservative, consumption-based saving at a verified Rs 60/unit, with export surplus credited where LESCO terms allow.

109,998
KWH/yr
Estimated generation (PSH 4.8 × PR 0.80)
58,800
KWH/yr
On-site consumption offset
3.53M
PKR/yr
Energy saving (consumption × Rs 60)
7.85M
PKR
Installed cost @ Rs 100/Wp
ScenarioSizeRoof fitCostSaving/yrPayback
Recommended78.5 kWp (109 panels)Yes7.85M3.53M2.2 yr
Conservative72.0 kWp (100 panels)Yes7.20M3.53M2.0 yr
Max (ground)180 kWp (250 panels)No — needs 7,741 sqft18.0M3.5–8.4M2.1–5.1 yr
Export surplus (~51,198 KWH/yr at 78.5 kWp) is credited where LESCO buyback applies, or curtailed per the export-control device. Even with zero export credit, the system pays back in 2.2 years on self-consumption alone.
Why Fusion Developers

An engineering-led solar partner

We design to verified field data, not generic assumptions — and we stand behind every watt.

📊

Data-verified

Every sizing derives from your actual LESCO history, with arrears and data errors stripped before calculation.

🏗️

Turnkey delivery

Survey, design, supply, install, commissioning and net-metering paperwork handled end-to-end.

✅

Compliant by design

Export-control devices and LESCO/NEPRA procedures built into the scope — no surprises at commissioning.

Next Steps

Let's build it

Approve the 78.5 kWp roof-only system and we will mobilise a site survey, finalise the panel layout, and confirm the LESCO export-credit tariff. Typical turnkey delivery within 8–10 weeks of sign-off.

Approve & Schedule Survey

Fusion Developers (Pvt) Ltd · info@fusiondevelopers.pk · www.fusiondevelopers.pk
Prepared by Abid Sb LESCO — Solar Dept. · Sign-off FD-SOLAR-LESCO-001-ABS-2026 · 2026-08-08