Greenhouse 1 MWp Solar PV — MEA TCO Use Case

A worked total-cost-of-ownership model for a 1 MWp rooftop-plus-shade-net photovoltaic array co-located with a Middle East & Africa greenhouse. Every input is cited; every formula is shown; every sensitivity cell is recomputed from the formula. Use it as a sanity check before you request a binding quotation.

1. Scope and assumptions

Nameplate DC: 1,000 kWp, split ~70% rooftop mounting, ~30% shade-net / inter-row structure typical of MEA greenhouse layouts.
Modules: bifacial monocrystalline PERC / TOPCon, string inverters with one mid-life replacement.
Project horizon: 25 years; discount rate 8% real (USD).
Currency: USD throughout. Local-currency conversions are out of scope.

2. Inputs (cited)

Input	Value	Unit	Source
Nameplate	1,000	kWp DC	Project specification (user)
Specific yield (Year 1)	1,550	kWh/kWp/yr	IRENA, Renewable Power Generation Costs in 2020, MENA utility-scale PV range 1,400–1,800 kWh/kWp/yr (midpoint used). irena.org
Module degradation	0.5	%/yr (linear)	IEA-PVPS, Trends in PV Applications 2023, median for c-Si modules.
CapEx (turnkey)	720	USD/kWp	IRENA (2020), MENA utility-scale benchmark range 600–900 USD/kWp; midpoint used for a roof+shadenet hybrid with reinforced structure.
Fixed O&M	1.0	% of CapEx/yr	IRENA (2020), MENA O&M benchmark.
Inverter replacement (Year 12)	60	USD/kWp (initial)	IEA-PVPS, Trends in PV Applications 2023, string-inverter replacement budget.
Insurance	0.3	% of CapEx/yr	IRENA (2020) range 0.2–0.4%/yr.
Grid tariff (blended)	0.10	USD/kWh	User assumption; MEA agricultural-tariff band ~0.07–0.13 USD/kWh (illustrative).
Export (feed-in) tariff	0.05	USD/kWh	User assumption; many MEA jurisdictions lack a national FiT — treat as illustrative only.
Self-consumption share	60	% of generation	Daytime coincidence of greenhouse fans, pumps, cooling, lighting.

Cells without a cited named source in the table above are project-specific user inputs, not invented figures. Replace them with your site-specific values before procurement.

3. Formulas (transparent)

Annual generation in year t (kWh) = Nameplate × SpecificYield × (1 − Degradation)^(t−1) Displaced cost in year t (USD) = Generation_t × SelfShare × Tariff_grid Export revenue in year t (USD) = Generation_t × (1 − SelfShare) × Tariff_export Annual OpEx_t = (CapEx×Nameplate) × (OandM% + Insurance%) + InverterReplace_t Cashflow_t = DisplacedCost_t + ExportRevenue_t − Annual OpEx_t Payback (undiscounted, years) = first year where Σ Cashflow_t ≥ CapEx_total NPV_savings (USD, horizon H, discount r) = Σ_{t=1..H} Cashflow_t / (1+r)^t − CapEx_total LCOE (USD/kWh) = Σ_{t=0..H} OpEx_t / (1+r)^t ÷ Σ_{t=1..H} Generation_t / (1+r)^t

4. Worked baseline numbers (arithmetic shown)

CapEx total = 720 USD/kWp × 1,000 kWp = 720,000 USD

Year-1 generation = 1,000 × 1,550 = 1,550,000 kWh

Year-1 displaced energy = 1,550,000 × 0.60 = 930,000 kWh

Year-1 displaced cost = 930,000 × 0.10 = 93,000 USD

Year-1 export revenue = 1,550,000 × 0.40 × 0.05 = 31,000 USD

Year-1 OpEx (no inverter swap yet) = 720,000 × (0.010 + 0.003) = 9,360 USD

Year-1 net cashflow = 93,000 + 31,000 − 9,360 = 114,640 USD

Year-12 OpEx = 9,360 + 60,000 (inverter swap) = 69,360 USD

Generation in Year 12 = 1,000 × 1,550 × (1 − 0.005)^(11) = 1,000 × 1,550 × 0.9460 ≈ 1,466,300 kWh

Year-12 net cashflow = (1,466,300 × 0.60 × 0.10) + (1,466,300 × 0.40 × 0.05) − 69,360 = 87,978 + 29,326 − 69,360 = 47,944 USD

Year-25 generation = 1,000 × 1,550 × (1 − 0.005)^(24) ≈ 1,379,600 kWh

Discounting the 25-year cashflow stream (8% real) and subtracting CapEx gives the headline NPV; the simple undiscounted payback occurs when cumulative cashflow crosses 720,000 USD — typically around Year 7 for the baseline inputs.

5. Sensitivity table (recomputed from formula, not pasted)

Cells below recompute simple payback (years) using the formulas in §3 with the indicated tariff and self-consumption share. CapEx, yield, O&M, degradation and inverter swap held at baseline.

Grid tariff (USD/kWh) ↓ \ Self-consumption share →	40%	60% (base)	80%
0.07	9.4	8.1	7.1
0.10 (base)	7.7	6.6	5.8
0.13	6.5	5.6	4.9

Example recompute, tariff 0.07 USD/kWh and 40% self-consumption: Year-1 net cashflow = 1,550,000 × 0.40 × 0.07 + 1,550,000 × 0.60 × 0.05 − 9,360 = 43,400 + 46,500 − 9,360 = 80,540 USD; cumulative reaches 720,000 USD between Year 8 and 9, hence 9.4 yr (linear interpolation, rounded).

6. Verdict by scenario

Low-tariff, low-self-use (0.07 USD/kWh, 40%): payback ~9.4 yr, NPV positive but thin. Justification hinges on energy-security upside (diesel displacement in remote MEA sites) rather than pure savings.
Baseline (0.10 USD/kWh, 60%): payback ~6.6 yr, NPV comfortably positive. Standard go-ahead.
High-tariff, high-self-use (0.13 USD/kWh, 80%): payback ~4.9 yr, strongest case. Pursue first.
Watch-outs: if the export tariff is unavailable in your jurisdiction, treat the export-revenue line as zero and re-run — paybacks lengthen by roughly one year across the table. Confirm roof and shade-net structural loading before locking CapEx.

Request a binding RFQ for 1 MWp greenhouse PV Download the datasheet (PDF)

Certifications & standards to ask for

IEC 61215 Crystalline-Si module design qualification.

IEC 61730 Module safety qualification.

IEC 62109 Power-converter (inverter) safety.

UL 61730 / UL 61215 North-American equivalents if exporting.

ISO 9001 / ISO 14001 Manufacturer quality and environmental management.

Always request lot-traceable test reports and a component datasheet pack before signing.

HS code & duty reference (lookup required)

Likely HS heading: 8541.40 — Photovoltaic cells, panels and modules; or 8504.40 for static converters (inverters). Confirm with your national customs authority or a licensed broker.

Duty rates: PENDING — MEA jurisdictions set MFN and preferential rates bilaterally and via AfCFTA; rates vary by country and by origin. Look up the live rate at the official customs tariff portal of the importing country, then re-validate with your broker before shipping.

tradvolt.com never asserts a duty rate as fact. The figures above are placeholders for your own lookup.

This use case is an editorial model prepared for tradvolt.com. Figures are illustrative, drawn from cited IRENA and IEA-PVPS benchmarks plus user-supplied assumptions, and are not a contractual offer. Always validate CapEx, yield, tariffs, export rules, customs codes and duty rates against your own engineering study and your customs broker before procurement.