Before You Buy a Wind Turbine for Your Factory: 7 Numbers That Decide Whether It Will Actually Save You Money
A factory owner considering a wind turbine usually starts with one question:
“How much does a 50 kW, 100 kW or 200 kW wind turbine cost?”
That is understandable.
The first question should be:
How many kilowatt-hours will this particular turbine realistically produce at my factory every year — and how much will those units actually save me?
That distinction is critical.
A 100 kW wind turbine is not a machine that continuously produces 100 kW.
It may produce almost nothing at low wind speeds, perhaps a fraction of rated power in moderate winds, and approach 100 kW only around its rated wind speed.
For a business, the number written on the turbine nameplate is therefore much less important than:
Annual Energy Production — kWh/year.
The U.S. Department of Energy’s wind guidance makes the same distinction: annual energy output is a better measure of whether a turbine will meet an energy requirement than simply looking at rated power. Expected energy production depends on the turbine’s power curve, wind resource, tower height, micro-siting and wind-speed frequency distribution. The Department of Energy’s Energy.gov
For Pakistani factory owners, this is particularly important because electricity costs are high enough for renewable energy to be commercially interesting — but a badly selected wind turbine can also become an expensive piece of machinery producing far less electricity than expected.
If you are specifically evaluating a Karachi industrial site, also see the detailed WindTurbine.pk guide to wind turbines for factories in Karachi. Wind Turbine for Factory in Karachi — Cost, Output & ROI Guide
Why Wind Deserves Serious Attention in Sindh
Sindh is not being discussed as a wind-energy region based only on theory.
The Sindh Energy Department describes the Gharo–Keti Bandar wind corridor as approximately 180 km long and 60 km wide, with more than 60,000 MW of estimated wind potential. It also reports 36 operational wind IPPs supplying approximately 1,845 MW. SINDH ENERGY DEPARTMENT –
That is important evidence for industrial investors.
But it does not mean:
“Sindh has good wind, therefore every factory in Sindh should install a wind turbine.”
A factory in Jhimpir, an open site near Gharo, a Port Qasim industrial plot, a SITE Karachi factory surrounded by buildings, and an industrial unit in Nooriabad can experience completely different wind conditions.
Wind is highly site-sensitive.
A few kilometres — or even a change in tower position within the same property — can materially change turbine performance.
Operational wind projects demonstrate the regional resource
| Wind Project | Location | Gross Capacity | PPIB-listed Net Capacity Factor / Efficiency |
|---|---|---|---|
| JPower | Jhimpir, Thatta | 49.735 MW | 31% |
| Zephyr Power | Gharo | 50 MW | 35% |
| A Wind Power | Jhimpir | 50 MW | 37.5% |
| M Wind Power | Jhimpir | 60 MW | 38% |
Sources: official Private Power & Infrastructure Board project records.
These numbers are not capacity-factor predictions for a factory turbine. Utility-scale wind farms use much taller towers, larger rotors and highly optimized sites.
They do, however, demonstrate something valuable:
Southern Sindh contains a genuine commercial wind resource.
The job of the factory owner is to determine whether enough of that resource exists at their exact property and turbine height.
For a wider geographic discussion covering Port Qasim, Dhabeji, Gharo, Nooriabad, Jamshoro, Kotri and Hyderabad, use our commercial guide here: Wind Turbine for Business — Karachi to Hyderabad Commercial Guide
The Seven Numbers That Decide Whether Your Wind Turbine Makes Money
Everything eventually comes back to seven numbers.
| No. | Number | Why a Factory Owner Needs It |
|---|---|---|
| 1 | Wind speed at turbine height | Determines the energy available to the rotor |
| 2 | Hours per year in each wind-speed range | Shows how often useful wind actually occurs |
| 3 | Turbine power curve and annual kWh | Converts wind into expected electricity |
| 4 | Self-consumption percentage | Determines how much generation directly replaces purchased electricity |
| 5 | Avoided electricity cost per kWh | Converts generated units into rupee savings |
| 6 | Total installed cost and annual O&M | Shows the real investment, not just turbine price |
| 7 | Payback, ROI and downside case | Decides whether the project deserves capital |
A professional industrial wind assessment should be able to answer all seven.
If it cannot, you do not yet have an investment case.
You have only a turbine quotation.
Number 1 — What Is the Wind Speed at the Actual Turbine Height?
Wind is the fuel.
Without sufficient wind, the rest of the discussion becomes irrelevant.
Unfortunately, this is also where many projects go wrong.
A factory manager may say:
“Our area is very windy.”
Another may say:
“We get strong sea breeze every afternoon.”
A supplier may visit the site for half an hour and conclude:
“Wind bohat achi hai.”
None of those statements is enough to justify a multi-million-rupee investment.
You need wind speed in metres per second — m/s.
And ideally you need it at, or estimated for, the turbine’s proposed hub height.
Why 10-metre wind data is not enough
Suppose historical data shows:
10 m height: 4.7 m/s
50 m height: 6.1 m/s
Those two numbers describe completely different energy environments.
Wind speed generally increases with height because the influence of ground friction and obstacles decreases.
The Department of Energy also notes that higher towers can access stronger, cleaner wind and can move the rotor above turbulence caused by buildings, trees and terrain.
This is one reason why placing a large industrial turbine directly behind a factory building may perform poorly even though the wider region is windy.
Wind power increases approximately with the cube of wind speed
The basic available wind-power relationship is:
P ∝ V³
where V is wind speed.
This does not mean turbine electrical output always follows an exact cube curve — turbine controls and aerodynamics change the real output.
But it explains why relatively small changes in wind speed matter so much.
For example:
5 m/s → baseline
6 m/s → (6/5)³ ≈ 1.73
The air moving at 6 m/s contains roughly 73% more available wind power than air moving at 5 m/s.
At 7 m/s:
(7/5)³ ≈ 2.74
That is almost 2.7 times the available power of 5 m/s wind.
The DOE similarly highlights the cubic relationship between wind speed and available power
That is why selecting the right location and tower height may be more valuable than simply buying a larger generator.
Number 2 — How Many Hours Does the Factory Actually Get at Each Wind Speed?
Annual average wind speed alone can hide a lot.
Imagine two factories both report an annual average of 5.5 m/s.
Factory A experiences relatively steady winds around 5–7 m/s.
Factory B experiences many hours of almost no wind, plus occasional very strong wind.
Their annual averages may look similar.
Their turbine output may not.
This is why WindTurbine.pk increasingly uses hourly wind-speed distribution for industrial assessments rather than relying only on one annual average.
A useful analysis looks like this:
| Wind Speed | Hours/Year | Share of Year | Why It Matters |
|---|---|---|---|
| 0–1 m/s | — | — | Essentially no meaningful production |
| 1–2 m/s | — | — | Usually below useful operating range |
| 2–3 m/s | — | — | Near cut-in for some turbines |
| 3–4 m/s | — | — | Low output region |
| 4–5 m/s | — | — | Output begins becoming commercially relevant |
| 5–6 m/s | — | — | Useful operating region |
| 6–7 m/s | — | — | Stronger contribution |
| 7–8 m/s | — | — | High-value wind hours |
| 8–9 m/s | — | — | Strong production |
| 9–10 m/s | — | — | Many machines approaching high output |
| 10+ m/s | — | — | Near rated region for some turbine designs |
The numbers in the middle columns must come from your location.
The next step is to multiply those hours by the turbine’s actual output at each wind speed.
That produces a much more defensible annual energy estimate.
This is also why using only a seller’s claim such as:
“This turbine works from 2.5 m/s”
can be misleading.
Cut-in wind speed is not the same thing as economically useful wind speed.
A turbine may begin rotating and generating electricity at 2.5 or 3 m/s while producing only a small fraction of its rated power.
If you want to understand how we screen wind data before buying equipment, see: NASA POWER Wind Data for Pakistan — WindTurbine.pk Guide
Historical reanalysis data are useful for initial screening, but for a substantial industrial investment, site measurement and professional micro-siting become increasingly important.
Number 3 — How Many kWh Will This Exact Turbine Produce Per Year?
This is arguably the most important number in the entire article.
A factory does not pay its electricity bill in kW.
It pays for kWh.
So do not compare turbines only like this:
| Turbine A | Turbine B |
|---|---|
| 100 kW | 100 kW |
Compare them like this:
| Specification | Turbine A | Turbine B |
|---|---|---|
| Rated capacity | 100 kW | 100 kW |
| Rotor diameter | ? | ? |
| Rated wind speed | ? | ? |
| Output at 5 m/s | ? | ? |
| Output at 6 m/s | ? | ? |
| Output at 7 m/s | ? | ? |
| Output at 8 m/s | ? | ? |
| Annual energy at your site | ? | ? |
| Net annual kWh after losses | ? | ? |
Two turbines carrying the same “100 kW” label can behave very differently in a moderate-wind environment.
Rotor size matters enormously
The energy intercepted by a wind turbine depends partly on its swept area:
A = πD² / 4
where D is rotor diameter.
Consider two rotors:
10 m diameter → approximately 78.5 m²
20 m diameter → approximately 314 m²
Doubling rotor diameter produces four times the swept area.
This is why a buyer should never evaluate industrial turbines using generator kW alone.
A large generator connected to a small rotor may look impressive in a brochure but spend little time anywhere near rated output.
The DOE also identifies rotor swept area as a key factor determining how much wind energy a turbine can capture. https://www.windturbine.pk
Ask for the power curve
A proper power curve might look conceptually like this:
| Wind Speed | Example 100 kW Turbine Output |
|---|---|
| 3 m/s | 1 kW |
| 4 m/s | 5 kW |
| 5 m/s | 12 kW |
| 6 m/s | 24 kW |
| 7 m/s | 41 kW |
| 8 m/s | 61 kW |
| 9 m/s | 79 kW |
| 10 m/s | 93 kW |
| 11 m/s | 100 kW |
These numbers are illustrative only.
Every actual turbine must be evaluated using its own manufacturer/test data.
For serious procurement, ask how the power curve was obtained.
IEC 61400-12-1 is the international standard covering measurement of wind-turbine power performance; the current standard specifies measurement methodology for power curves and energy production and includes uncertainty assessment. IEC Webstore
That gives factory procurement teams a much better question than:
“Is this turbine CE certified?”
Ask:
“Do you have independently measured power-performance data for this exact turbine model, and under what test standard?”
For a detailed example of why similarly rated turbines can produce very different energy, see: 10 kW Wind Turbine in Pakistan — Real Output & Performance Guide
Rated Power Is Not Annual Production
Consider a 100 kW machine.
If it produced full rated output every hour of the year:
100 × 8,760 = 876,000 kWh/year
But no real wind turbine operates at rated output 24 hours a day for an entire year.
A useful business metric is capacity factor:
Capacity Factor = Actual Annual Energy ÷ Maximum Theoretical Annual Energy
For a 100 kW turbine:
| Capacity Factor | Annual Production |
|---|---|
| 10% | 87,600 kWh |
| 15% | 131,400 kWh |
| 20% | 175,200 kWh |
| 25% | 219,000 kWh |
| 30% | 262,800 kWh |
| 35% | 306,600 kWh |
| 40% | 350,400 kWh |
These are mathematical scenarios — not forecasts for Karachi, Sindh or any particular turbine.
This table shows why the statement:
“We are installing a 100 kW turbine”
does not tell the finance department enough.
The important statement is:
“Our conservative net estimate is 235,000 kWh per year.”
That is a business number.
Number 4 — How Much of the Wind Energy Will Your Factory Use Itself?
This number is often ignored.
It should not be.
Suppose your turbine produces:
250,000 kWh/year
That does not automatically mean all 250,000 units have the same financial value.
If your factory is consuming electricity when the turbine generates it, each self-consumed kWh can reduce electricity that would otherwise have been imported from the grid.
If the factory load is very low when wind generation peaks, surplus energy may require export, curtailment, storage or another technical arrangement.
Therefore:
Annual wind generation ≠ automatically annual bill offset.
A better calculation is:
Self-consumed wind energy = Wind generation × Self-consumption ratio
Suppose annual generation is:
250,000 kWh.
If the factory uses 90% directly:
225,000 kWh offsets factory consumption.
If it uses only 50% directly:
125,000 kWh directly offsets consumption.
That difference can materially change project economics.
Factories can be attractive wind customers
Factories with long operating hours can be more attractive than buildings that consume electricity only for a few hours per day.
Examples include textile processing, cold storage, food processing, water pumping, foundries, continuous manufacturing, large warehouses with refrigeration, poultry/feed operations and other businesses with substantial daytime and evening loads.
The ideal analysis uses the factory’s hourly or 15-minute load profile and compares it against expected wind production during the same periods.
This is much better than comparing annual generation with annual consumption only.
For a complete load-first sizing method, see: How to Size a Wind Turbine From Your Factory Electricity Bill in Pakistan
Number 5 — What Is One Saved Unit Actually Worth to Your Factory?
Now we reach the part every CFO cares about.
Suppose your turbine generates 200,000 useful kWh per year.
How much is that worth?
You cannot answer correctly by simply looking at the total electricity bill and dividing by units.
Why?
Because industrial bills can include different components:
energy charges, peak/off-peak rates, fixed charges, fuel/quarterly adjustments, surcharges, taxes and other items.
Some charges decline when consumption declines.
Some may not.
Therefore, the most useful economic concept is:
Avoided marginal electricity cost
This is the rupee amount the factory genuinely avoids when it generates one additional kWh itself.
For Karachi factories, the February 2026 Government-notified K-Electric industrial schedule listed the following variable charges for several industrial categories:
| Industrial Category | Peak Variable Charge | Off-Peak Variable Charge |
|---|---|---|
| B-2 | Rs 35.68/kWh | Rs 22.83/kWh |
| B-3 | Rs 35.68/kWh | Rs 23.67/kWh |
| B-4 | Rs 35.68/kWh | Rs 23.38/kWh |
The notified schedule also contains category-specific fixed and other tariff provisions. Nepra
K-Electric’s tariff portal shows that subsequent notifications, quarterly adjustments and fuel-cost adjustments are also issued, so the tariff used in an investment model should always come from the factory’s latest actual bills and current regulatory schedule, not from an old article.
This point matters.
A salesperson may calculate:
Annual kWh × Rs 50
because the total bill appears to cost Rs 50 per unit after everything.
That can overstate the savings if some of those charges remain payable.
A conservative financial model separates:
avoidable energy charges from costs that remain regardless of turbine generation.
What Could a 100 kW Turbine Save?
Here is a useful illustration.
Assume a 100 kW turbine with various capacity factors.
This is not a prediction for any specific site.
| Capacity Factor | Annual Energy | Gross Value at Rs 23/kWh | Gross Value at Rs 36/kWh |
|---|---|---|---|
| 20% | 175,200 kWh | Rs 4.03 million | Rs 6.31 million |
| 25% | 219,000 kWh | Rs 5.04 million | Rs 7.88 million |
| 30% | 262,800 kWh | Rs 6.04 million | Rs 9.46 million |
| 35% | 306,600 kWh | Rs 7.05 million | Rs 11.04 million |
Now the importance of accurate wind data becomes obvious.
The difference between 20% and 35% capacity factor is:
131,400 kWh/year.
At Rs 30/kWh, that difference alone represents roughly:
Rs 3.94 million per year.
That is why a wind-resource assessment can be worth far more than its cost.
A wrong energy assumption can shift payback by several years.
Number 6 — What Is the Total Installed Cost, Not the Turbine Price?
Another common mistake is comparing:
Turbine purchase price
against:
annual electricity savings.
The turbine is only one component of an industrial wind project.
The real investment can include:
| Cost Component | Why It Matters |
|---|---|
| Wind turbine | Rotor, generator, nacelle and controls |
| Tower | Height dramatically affects both cost and wind access |
| Foundation | Must be designed for turbine loads and local soil |
| Controller/converter | Manages variable turbine electrical output |
| Grid inverter | May be required depending on system architecture |
| Transformer | Required in some larger systems |
| Protection & switchgear | Electrical safety and grid integration |
| Cables | Large turbines may require substantial conductor sizes |
| Dump load/braking equipment | Turbine protection |
| Earthing & lightning protection | Essential for exposed towers |
| Civil works | Foundation, access, fencing |
| Crane/erection | Can become a major cost for large machines |
| Freight/import costs | Especially relevant for Pakistan projects |
| Engineering | Structural, electrical and geotechnical design |
| Grid interconnection | Depends on connection arrangement |
| Monitoring system | Essential for verifying production |
| Spare parts | Important for imported equipment |
| Annual maintenance | Must be included in ROI calculations |
Therefore:
Total Project Cost ≠ Turbine Price.
For small commercial systems, current WindTurbine.pk pricing information is available here: Wind Turbine Prices in Pakistan
For larger industrial turbines such as 50 kW, 100 kW, 200 kW or 500 kW, a serious quotation should be site-specific because tower height, foundation, crane requirements and electrical architecture can materially change the total investment.
Number 7 — What Is the Real Payback Period?
Once the first six numbers are available, the seventh becomes possible.
The basic calculation is:
Simple Payback = Total Installed Investment ÷ Net Annual Savings
But the word net matters.
A stronger model is:
Annual Net Savings
= value of self-consumed wind electricity
- value of any economically usable/exported energy
− annual maintenance
− insurance if applicable
− monitoring/service costs
− other recurring project expenses.
Then:
Payback = Total Capital Cost ÷ Annual Net Savings
Example
Suppose a factory project costs:
Rs 32 million
Expected net generation:
270,000 kWh/year
Average avoided electricity value:
Rs 30/kWh
Gross avoided energy cost:
270,000 × 30 = Rs 8.10 million/year
Assume:
Annual O&M and related recurring cost = Rs 800,000
Net annual savings:
Rs 7.30 million
Simple payback:
32 ÷ 7.3 ≈ 4.4 years
Now change one assumption.
If real production turns out to be only:
170,000 kWh
Gross value:
Rs 5.10 million
Less Rs 800,000 O&M:
Rs 4.30 million
Payback becomes:
32 ÷ 4.3 ≈ 7.4 years
Same turbine, Same factory, Same capital cost.
But an incorrect wind assumption changes payback from approximately 4.4 years to 7.4 years.
That is the entire reason this article exists.
Do Not Present One ROI Number — Present Three Cases
For a commercial investment, I recommend building at least three financial cases.
| Scenario | Purpose |
|---|---|
| Conservative | Lower wind/output + realistic losses + higher O&M |
| Base Case | Most likely engineering estimate |
| Upside Case | Stronger wind/performance, but still technically defensible |
For example:
| Assumption | Conservative | Base | Upside |
|---|---|---|---|
| Annual energy | 180,000 kWh | 240,000 kWh | 290,000 kWh |
| Self-consumption | 80% | 90% | 95% |
| Avoided rate | Rs 26 | Rs 30 | Rs 34 |
| Annual O&M | Rs 1.0m | Rs 0.8m | Rs 0.7m |
| Net savings | Calculate | Calculate | Calculate |
| Payback | Calculate | Calculate | Calculate |
A businessman can then ask:
“If everything is only average rather than perfect, does this investment still make sense?”
That is a much stronger decision framework than showing one optimistic payback figure.
Karachi Is Not One Wind Site
This is particularly important for Karachi.
“Karachi” is too broad a location for a wind-turbine feasibility conclusion.
Consider the difference between:
| Factory Location | Wind Assessment Issue |
|---|---|
| Port Qasim / Bin Qasim open industrial land | Coastal exposure can be promising; site still needs analysis |
| SITE industrial area | Dense buildings may create major turbulence |
| Korangi | Highly site dependent; coastal influence but significant urban obstruction |
| Landhi | Industrial density and obstacle height matter |
| Northern industrial outskirts | Wind must be checked independently |
| Open coastal property | Potentially favourable if tower has clean exposure |
| Rooftop between factories | Turbulence can seriously reduce performance |
The fact that air feels strong at street or rooftop level does not guarantee good turbine inflow.
A wind turbine does not want simply strong wind.
It wants clean, relatively low-turbulence wind.
Large buildings create wakes, separation zones and rapidly changing airflow.
This is one reason a proper tower on open land is often a more serious industrial solution than placing a large turbine on the corner of a factory roof.
For factory buyers in Karachi, start with our site-specific overview: Commercial Wind Turbine Guide for Karachi Factories
Gharo and Jhimpir Are Different
If your facility is in or near Gharo, Jhimpir or the wider Thatta wind region, the starting point is different.
These regions already have strong evidence from utility-scale wind development.
The Sindh government’s own figures for the wider Gharo–Keti Bandar corridor and PPIB’s commissioned projects make this Pakistan’s most established commercial wind area.
But even there, do not skip site assessment.
Utility wind-farm turbines may have hub heights of many tens of metres and rotors more than 100 metres across.
A 20 kW or 100 kW turbine on a much shorter tower will not automatically experience the same conditions.
Wind resource belongs to:
Location + Height + Terrain + Obstacles
—not simply the district name.
For readers specifically researching Gharo: Wind Turbine in Gharo, Sindh — Wind Potential & Guide
What About Port Qasim, Dhabeji, Nooriabad, Kotri and Hyderabad?
These areas deserve commercial investigation because they combine industrial electricity demand with locations that may have useful wind exposure.
But they should not all be assigned the same wind speed.
The wider Karachi-to-Hyderabad industrial region is close to Sindh’s established wind-resource area, but the strongest documented utility-scale clusters remain Gharo and Jhimpir. windturbine.pk
For a factory owner, the right language is:
Not:
“Every factory here should install a turbine.”
That distinction increases credibility — and avoids selling the wrong system.
Wind Direction Matters Almost as Much as Wind Speed
A useful feasibility report should also include a wind rose.
A wind rose shows the percentage of time wind comes from each direction.
Why should a factory owner care?
Because the turbine should ideally have a clear path toward the dominant wind sectors.
Suppose the majority of commercially valuable wind comes from the west-southwest.
Now suppose a six-storey factory building sits directly west-southwest of the proposed tower.
Your regional wind data may be excellent.
Your turbine location may still be poor.
That is why wind direction should be combined with a site plan showing:
building heights, warehouses, chimneys, trees, water tanks, boundary structures, telecommunications towers and nearby construction.
This is also why exact GPS coordinates alone are not enough.
What Should You Send Before Asking for a Wind Turbine Quotation?
For a meaningful industrial assessment, the most useful information is summarized below.
| Information | What It Tells Us |
|---|---|
| Exact GPS location | Regional wind screening |
| 12 months electricity bills | Annual consumption and tariff |
| Peak/off-peak units | Value of generation by time |
| Sanctioned/load category | Electrical context |
| 15-minute/hourly load profile | Self-consumption potential |
| Factory operating hours | Load matching |
| Existing solar capacity | Hybrid opportunity |
| Site photographs | Obstacles/turbulence |
| Factory building height | Rotor clearance requirement |
| Available open land | Tower feasibility |
| Neighbouring building heights | Wake/turbulence risk |
| Desired turbine size | Initial equipment screening |
| Grid voltage | Electrical integration |
| Transformer details | Connection engineering |
| Soil/geotechnical information | Foundation design for larger systems |
If a supplier is willing to recommend a 100 kW turbine without asking most of these questions, treat the recommendation cautiously.
A 100 kW Factory Load Does Not Mean You Need a 100 kW Wind Turbine
This mistake deserves its own section.
Suppose your factory load is continuously:
100 kW
That means the factory would consume:
2,400 kWh/day
if it ran at 100 kW for 24 hours.
But a 100 kW wind turbine may produce:
20 kW at one moment,
65 kW later,
5 kW at night,
100 kW in stronger wind,
and nearly zero when the wind falls.
Therefore:
Load kW and turbine rated kW are not directly interchangeable.
Turbine size should come from:
Factory load profile + wind distribution + turbine power curve + financial objective.
That process is explained in more detail here: Size a Wind Turbine From Your Factory Electricity Bill
Wind vs Solar for a Factory in Pakistan
Many businessmen will reasonably ask:
Why wind? Why not install more solar?
In many Pakistani factories, solar will indeed be the first renewable technology to investigate.
Wind becomes particularly interesting when the site has a strong resource or when its generation profile complements solar.
| Factor | Solar | Wind |
|---|---|---|
| Generates during daylight | Excellent | Depends on wind |
| Can generate at night | No | Yes |
| Site sensitivity | Moderate | Very high |
| Moving parts | Very few | Yes |
| Routine maintenance | Lower | Higher |
| Rooftop suitability | Excellent | Often problematic for larger systems |
| Open-land requirement | Panels need area | Tower + setbacks needed |
| Seasonal profile | Solar driven | Wind driven |
| Output prediction | Relatively straightforward | Requires detailed wind analysis |
| Hybrid potential | Excellent | Excellent |
The strongest answer is often not:
Wind or solar?
It may be:
Solar + wind, each sized for the site and factory load profile.
A coastal or open Sindh factory may have good afternoon/evening wind precisely when solar generation starts declining.
But this must be demonstrated using hourly data rather than assumed.
What an Industrial Wind Feasibility Report Should Actually Contain
A credible feasibility study should go substantially beyond:
Average wind speed = 6 m/s. Recommended turbine = 100 kW.
A proper industrial report should include at least:
| Analysis | Why It Matters |
|---|---|
| Multi-year wind data | Reduces dependence on one unusual year |
| 10 m wind speed | Baseline |
| 50 m wind speed | Height comparison |
| Hub-height estimate | Relevant to proposed tower |
| Monthly averages | Seasonal variation |
| Hourly averages | Time-of-day pattern |
| 1 m/s wind-speed bins | Energy modelling |
| Wind direction | Micro-siting |
| Maximum wind | Structural/control context |
| Power curve | Converts wind into output |
| Gross annual energy | Initial production estimate |
| Loss assumptions | Realistic net output |
| Net annual energy | Business case |
| Factory load profile | Self-consumption |
| Electricity tariff | Rupee value |
| O&M estimate | Net savings |
| Conservative/base/upside ROI | Investment decision |
WindTurbine.pk’s feasibility approach begins by screening the site rather than selling equipment first. An initial assessment tool is available here: Wind Turbine Feasibility Calculator Pakistan
Before Buying, Check the Hardware Too
Even an excellent wind site can become a poor investment if the turbine itself is badly specified.
A factory procurement team should pay special attention to rotor diameter, tower, braking, overspeed protection, generator type, controller, inverter architecture, corrosion protection, bearings, blade material, spare-parts availability and actual performance documentation.
Wind turbines installed near the Sindh coast also deserve serious attention to:
salt corrosion,
humidity,
fasteners,
electrical connectors,
coatings,
bearing seals,
tower protection,
and scheduled maintenance.
A cheap imported turbine with no documented power curve, no available controller, no replacement blades and no local service can be expensive even if its purchase price looks attractive.
Our full pre-purchase technical checklist is here: 15 Things to Check Before Buying a Wind Turbine in Pakistan
The Most Important Question to Ask a Supplier
Do not ask only:
“How much is your 100 kW turbine?”
Ask:
“Using my factory’s exact GPS location, proposed hub height, multi-year hourly wind distribution and this turbine’s measured power curve, what is your estimated net annual production in kWh — and what losses have you assumed?” home wind turbine price in Pakistan Wind Turbine Price in Pakistan
That one question changes the entire conversation.
A serious supplier should be able to explain:
where the wind data came from,
what height it represents,
how wind speed was adjusted to hub height,
what turbine power curve was used,
how turbulence is being considered,
what availability was assumed,
what electrical losses were assumed,
and how the final kWh/year figure was calculated.
If those inputs are missing, the annual-production claim is difficult to verify.
A Simple Factory Decision Example
Imagine two suppliers quote the same factory.
Supplier A:
100 kW turbine
Price: Rs 25 million
No detailed wind study
Claims: “Around 400,000 units/year”
Supplier B:
100 kW turbine
Price: Rs 29 million
Three years of hourly wind analysed
Tower height specified
Power curve provided
Losses included
Net estimate: 275,000 kWh/year
Which turbine is cheaper?
We cannot answer from purchase price.
Suppose Supplier A actually delivers only 150,000 kWh/year.
At Rs 30 avoided cost:
Rs 4.5 million/year gross value.
Suppose Supplier B delivers 275,000 kWh:
Rs 8.25 million/year gross value.
The machine costing Rs 4 million more could create roughly:
Rs 3.75 million more electricity value every year.
This is why:
The cheapest turbine is not necessarily the cheapest electricity.
The Businessman’s Final Seven-Number Test
Before signing a purchase order, put these seven figures on one page.
| Metric | Your Project |
|---|---|
| Average wind speed at hub height | ______ m/s |
| Hours/year above useful wind range | ______ hours |
| Net annual turbine generation | ______ kWh |
| Factory self-consumption | ______ % |
| Average avoided electricity cost | Rs ______ /kWh |
| Complete installed investment | Rs ______ |
| Net annual savings / payback | Rs ______ / ______ years |
If those blanks cannot be filled with defensible numbers, the project is not ready for investment approval.
Final Advice for Factory Owners in Karachi and Sindh
Wind energy can make commercial sense for Pakistani factories.
Southern Sindh has one of Pakistan’s strongest documented wind resources, supported by a large operational utility wind industry around Gharo and Jhimpir.
Karachi also deserves serious investigation, especially at open, coastal and large industrial properties.
But wind energy is unforgiving of shortcuts.
Do not buy a turbine because:
the area feels windy,
the seller says the machine starts at 2 m/s,
the factory load is 100 kW,
the turbine is labelled 100 kW,
or another factory 30 kilometres away is using wind.
Start with the site.
In one sentence:
Do not invest in turbine kW. Invest in verified annual kWh.
That is the number that eventually pays the electricity bill.
For an industrial wind assessment, factory sizing or commercial system discussion, start at WindTurbine.pk — Wind Energy Solutions in Pakistan.
