Asset visibility
Is the system actually performing as it should?
Wattey Energy (formerly BijliBachao.pk) · Five energy products by Ali Ahmed
Every unit of electricity, measured and proven.
Building software for the way energy works in the real world.
- ProductStrategy, customer problems, business outcomes
- EngineeringArchitecture, technical depth, complex systems
- Builder / operatorI lead the product and take it into production
Ali AhmedHead of Energy Systems & Product Engineering · Wattey Energy · Oct 2025 – presentTalk to Ali
Want WattEY at your site? Book a free demo with Wattey Energy
WattEY Metering · names redacted LIVE
WattEY · site energy dashboard LIVE
Solar Performance Cloud reads 7 inverter clouds · not partners or endorsers
11 named businessesuse these platforms, incl. Lahore Continental Hotel, Mall of Mureedkay and FANZ Spinning Mill19 organisationssee where their electricity goes, every 3 minutes · 1.92 GWh measured · WattEY94 solar siteschecked string by string · 906 strings across 7 inverter clouds · Solar Performance CloudEvery tenant bill proven668 of 668 readings carry a meter photo · WattEY Metering
Figures as of 25 August 2026 · client list current · Wattey Energy’s clients, using the platforms Ali built
01 / The industry challenge
The difficult partbegins afterinstallation.
Energy infrastructure does more than generate electricity. It needs to be monitored, inspected, controlled and accounted for throughout its operating life.
Across real installations, the challenge is making equipment data, physical operations and commercial workflows work together so the people responsible for these systems can make informed decisions.
This is the operating reality behind the products I built at Wattey Energy (formerly BijliBachao.pk).
Disconnected energy data
Grid, solar, generator and billing data rarely live together.
Operational control
Some actions still depend on physical equipment and manual coordination.
Electricity accounting
Shared sites need billing workflows that are traceable and defensible.
Operating reality
- Grid
- Solar
- Generator
- Controls
- Billing
The full energy stack
From physical infrastructure to dependable software.
The next energy product needs more than a dashboard.
Grid, solar, generator, switching and billing, engineered as one system: every unit measured, every switch confirmed, every bill traceable.
- 01
Grid
For factories, hotels and offices
Peak-hour units cost more. Every unit is split at the peak window that actually applies — it shifts four times a year, automatically.
Time-of-use tariffNet meteringMetered import and export, peak and off-peak hours, read every 3 minutes.
WattEY A missing signal is shown as a gap, never a fake zero.1.92 GWhnet electricity measured · 19 organisations - 02
Solar
For solar plants and EPC portfolios
A weak panel string quietly loses generation you already paid for. Find it string by string, whatever the inverter brand.
String-level monitoringMulti-brand invertersEvery panel string compared with its neighbours, across 7 inverter cloud platforms.
Solar Performance CloudWattEY Strings are judged against their neighbours, not by a brand’s own app.906panel strings checked · 94 sites - 03
Generator
For sites with backup generators
Generator hours and units, kept separate from grid units, without fitting a fuel sensor.
Generator run detectionGenerator runtime and energy separated from grid energy, automatically.
WattEY Detected from the meter itself, with no fuel sensor.1,892 kWhgenerator energy kept apart from grid energy - 04
Controls
For sites mixing solar and grid
Run on solar first and fall back to grid, and know the switch really happened.
Solar/grid transfer switchSwitching between solar and grid, from a phone or on a schedule.
WattEY STS A switch counts only when the device confirms it.Livedevice-confirmed switching - 05
Billing
For malls, plazas and hostels
Every tenant can check their bill against the photo of their own meter.
Tenant sub-meteringPhoto-verified readingsTenant and resident bills from photographed meter readings; residents billed by the days they stayed.
WattEY MeteringWattEY Sub-Billing A closed month is locked; corrections are recorded, never silently changed.668 / 668readings with a meter photo
Figures as of 25 August 2026. Figures from different products are never added together.
The result
A traceable energy record, from the meter to the bill.
One Wattey Energy client makes clothing for global brands. They didn’t ask how their solar was performing; they asked how much carbon they had avoided, because their buyer wanted the figure.
A renewable claim is only as good as the meter behind it.
Useful for export supply chains: when a buyer asks where a factory’s electricity came from, the answer is already recorded — metered grid use, solar output string by string, generator runs and photo-backed readings. It is the record an accountant or verifier works from; the products do not calculate emissions.
02 / The products
Five products, two families, built for real sites.
I designed and built five connected products for Wattey Energy (formerly BijliBachao.pk): to monitor, inspect, switch and bill electricity at real operating sites in Pakistan.
Book a free live demoPlatform family 01
WattEY
Electricity monitoring, switching and billing
Live since November 2025
WattEY
Why did our electricity bill change?
WattEY · actual product screen
1.92 GWh of net electricity measured for 19 organisations in 5 cities
Read the case studyLive
WattEY STS
Did the supply actually switch?
WattEY STS · product render
A switch counts only when the device confirms it, not when the button is pressed
Read the case studyLive since 5 March 2026
WattEY Metering
Can we prove every tenant’s reading?
WattEY Metering · actual screen, names redacted
668 of 668 readings photographed · 5 billing cycles closed
Read the case studyLive in its first building since Oct 2026
WattEY Sub-Billing
Who pays what when residents come and go?
WattEY Sub-Billing · the product’s own bill layout, demo data
265-bed hostel · 94 rooms · about 160 meters
Read the case studyPlatform family 02 · a separate platform
Solar Performance Cloud
Is my solar producing what it should? Solar inspection across inverter brands.
String comparison · one plant, one dayIllustrative
906 panel strings monitored at 94 sites · 7 inverter cloud platforms from 6 manufacturers (read 25 August 2026)
Reads 7 inverter clouds · not partners or endorsers
03 / What I owned
What I owned, and how I build.
Head of Energy Systems & Product Engineering at Wattey Energy since October 2025. I lead the product, engineer the system and take it into production.
- Oct 2025Joined as Head of Energy Systems & Product Engineering
- Nov 2025WattEY live
- Jan 2026Solar Performance Cloud live
- Mar 2026WattEY Metering live
- Oct 2026WattEY Sub-Billing live in its first building
WattEY STS is also live.
What I owned
- Designed and built all five products, from the problem on the site floor to the screens people use.
- Built the company website and two Android apps that read meters, including with no signal.
- Published two open datasets so the figures can be checked.
- Wattey Energy’s engineers handled installation, rollout and training at sites; I built the software they deploy.
Also built
- The BijliBachao.pk websitethe company’s public site, built to be found by search and quoted by AI assistants
- Two Android field appsmeter reading with photo evidence, offline-capable
- Two open datasetsWattEY and Solar Performance Cloud, CC BY 4.0
The hard cases
- 01WattEY · Solar Performance Cloud
A missing signal is not zero
When a meter or inverter goes quiet, the products show a gap, not a fake zero that looks like a failure.
- 02WattEY STS
A switch counts only when the device confirms it
Pressing “switch to solar” is a request. STS reports success only when the device says the supply changed.
- 03WattEY Metering
A closed month can’t be quietly rewritten
Once a billing month closes, its readings and bills are locked. Corrections are recorded, not silently changed.
- 04WattEY Sub-Billing
People leave mid-month
A resident who leaves on the 20th pays for the days they stayed, settled on the day they leave.
Each product sits in an established international category (energy monitoring, multi-brand solar monitoring, transfer switching, tenant sub-metering), so the work translates beyond Pakistan.
I’m open to senior energy-technology and product-engineering roles, and to well-defined partnerships.
The work
The hard parts, and what I decided.
Any platform looks inevitable once it runs. These are the judgement calls that decided whether the numbers could be trusted, including the ones that only surfaced after the software was already in production.
- Solar Performance Cloud
There is no threshold that works
The obvious way to catch a failing solar string is a rule: alert below this many amps. It does not work. The right value moves with the hour, the season, the weather, the panel model, the tilt and the age of the array, so every fixed threshold either screams all morning or misses the fault.
What I chose
Grade each string against its own neighbours on the same inverter. Same weather, same hour, same hardware, so whatever is wrong with the day is wrong for all of them equally and cancels out. What is left is the string that is genuinely behind.
What it cost
The method needs peers. It is strongest where there are strings to compare, and weakest where there are not.
- Solar Performance Cloud
False alarms before breakfast
The first version of the alerting fired a flood of false critical alerts in the opening minutes of a single morning. The cause was dawn: strings on the same channel wake minutes apart, so for half an hour every one looks broken next to the one that woke first.
What I chose
Treat the waking window as its own state. The alternative was lowering sensitivity, which would have bought silence at sunrise by hiding real faults for the rest of the day.
What it cost
An operator who learns to ignore alerts has a worse instrument than no instrument at all.
- Solar Performance Cloud
The data arrives, and it is a lie
Vendor clouds replay stale readings. At midnight you can be handed a bright sunny afternoon, complete with amps and kilowatts, while nothing is actually arriving. The dashboard shows a healthy plant.
What I chose
Identify and refuse every replayed reading before it reaches a calculation.
What it cost
When you compute money from a device you do not own and cannot trust, the integrity layer is the product.
- WattEY · Solar Performance Cloud
Letting the product say “we don’t know”
The tempting thing is to always return a number. Below a coverage floor these platforms return no answer at all, and a yield figure is withheld entirely when the capacity it would divide by is not known.
What I chose
“No data” is its own state and is never quietly folded into “abnormal”. WattEY shows every gap rather than filling it, and each one is visible.
What it cost
A total can be correct while the story is wrong. An engineer shown the gap can act on it; one shown a confident average cannot.
- WattEY
A minus sign that decides the bill
Under net metering the billable quantity is signed: import minus export, not import. When a roof sends more to the grid than the building draws, consumption for that hour is negative.
What I chose
Carry the sign through the whole billing path, and compute the tariff window from the current season automatically rather than reading a configuration record somebody has to remember to update.
What it cost
A platform that reports that hour as positive is not slightly off. It is wrong in the direction that costs the client money.
- WattEY STS
A press is a request, not a switch
Pressing “switch to solar” sends a command. The actuator can fail, the device can be offline or the supply can be missing, and a button would still look done.
What I chose
Report a switch complete only after the device reads the new source back from its own sensors, so a failed switch is surfaced instead of assumed.
What it cost
Confirmation takes a moment longer than a button turning green. A switch that is reported but never happened is worse than a short wait.
- WattEY Metering
A closed month cannot be quietly rewritten
After bills go out, someone always finds a reading to fix, and the easy fix is to edit the old number.
What I chose
Close each month into a frozen, read-only snapshot. Corrections are appended and visible as corrections; reopening a month is recorded with who did it, and blocked outright where it could bill a tenant twice.
What it cost
A mistake costs a recorded correction instead of a quiet edit. That is slower, and it is the point: a tenant can trust a bill that cannot change behind their back.
Judgement calls like these are the job. Hiring a product/engineering leader
What transfers
It was never really about electricity.
Strip the kilowatts out of these five products and what is left is a pattern that shows up anywhere a business computes money from hardware it does not control. Readings arrive late, out of order, duplicated, or replayed from a day that already happened. One broken instrument poisons the readings around it. Two systems report two numbers and nobody can say which is real. And someone still has to sign an invoice at the end of the month.
The engineering that answers that is the same in logistics and fleet data, in water and utility metering, in industrial IoT, and in payments and reconciliation: a single source of truth across multi-brand devices, built so an accountant can defend the output.
The platforms are the proof. The method is the offer.
- 01Replay gatingrefuse a reading that already happened
- 02Plausibility gatingreject the impossible before it is counted
- 03Peer benchmarkingcompare against neighbours, not a fixed threshold
- 04Behaviour-based classificationread the device, not a config record
- 05Coverage floorsreturn nothing rather than a confident guess
If you have this problem
You have a version of this, and you are deciding whether to build it or rent it.
Renting answers the question until the contract, the data model and the supported brands are someone else’s decision. Building answers it permanently, and keeps the system with the business. I have taken that second path to production, in one of the harder energy markets there is.
04 / Where it runs
Running today at named sites across Pakistan.
These are Wattey Energy’s clients, using the platforms I designed and built. Every figure carries its date, and you can check it yourself.
WattEYWattEY · site energy dashboard · actual screen19 organisations1.92 GWh of net electricity measured
Plant page · String Analysis · actual admin screen, inverter serials hidden94 solar sites906 panel strings checked one by one
Readings · actual screen, names redacted668 of 668tenant readings carry a meter photoResident bill · the product’s own layout, demo data265 bedsrunning on WattEY Sub-Billing, room by room, since October 2026
WattEY STS controller · product renderLivea switch between solar and grid counts only when the device confirms itSites not named yet
WattEY · site energy dashboard · actual screen19 organisations1.92 GWh of net electricity measured- Lahore Continental Hotel
- Mall of Mureedkay
- Al Haram Paper Mill
- FANZ Spinning Mill
- Amna Dyeing & Finishing
- Qadir Engineering
- Zahoor Dairy Farm
- 5t Gulberg
Plant page · String Analysis · actual admin screen, inverter serials hidden94 solar sites906 panel strings checked one by one- FANZ Spinning Mill
- Zahoor Dairy Farm
- Popular Sole
- Beco Steel
Readings · actual screen, names redacted668 of 668tenant readings carry a meter photo- Mall of Mureedkay
Resident bill · the product’s own layout, demo data265 bedsrunning on WattEY Sub-Billing, room by room, since October 2026- Rehma Hostel
WattEY STS controller · product renderLivea switch between solar and grid counts only when the device confirms itSites not named yetFigures as of 25 August 2026 (WattEY Sub-Billing: October 2026). Figures from different products are never added together.
Check it yourself
A real tenant billThe meter photo is printed on the bill, next to the reading it proves. From WattEY Metering’s own bill generator; tenant and amounts fictional, meter photo real.See how it works Open dataTwo public datasets under CC BY 4.0, each dated with its definitions.
Built to standardsSolar Performance Cloud is aligned to IEC 61724-1 (PV performance monitoring) and IEC 62446-1 (PV testing and documentation). Transfer-switch interlocking follows IEC 60947-6-1 on the Industrial STS variant only.
How these figures are counted
- WattEY: 1.92 GWh is net electricity (import minus export), not solar generation or money saved. 19 organisations; 43 meters.
- Solar Performance Cloud: 906 strings reported live data in the 30-day window to 25 August 2026; 582 were scored on the settled day, 24 August 2026. Sites are monitored, not installed by Ali.
- WattEY Metering: one shopping mall (Mall of Mureedkay): about 545 units in the building, 129 shops onboarded, about 111 meters billed monthly.
- WattEY Sub-Billing: building scope as of October 2026; its first real billing month is in progress.
- Figures from different products are never added together.
05 / The company and the people
The company, the founder, and my role.
In one paragraph
Ali Ahmed is Head of Energy Systems & Product Engineering at Wattey Energy (formerly BijliBachao.pk), a Lahore energy company founded in 2018 by Engr. Reyyan Niaz Khan. Since October 2025 he has designed and built its five energy products (WattEY, WattEY STS, WattEY Metering, WattEY Sub-Billing and Solar Performance Cloud) and the company website. By 25 August 2026, WattEY had measured 1.92 GWh of net electricity for 19 organisations, and Solar Performance Cloud was monitoring 906 panel strings at 94 sites.
Wattey Energy (formerly BijliBachao.pk)
Solar, energy-audit and engineering-design work, and the energy products on this page. “Bijli Bachao” is Urdu for “save electricity”.
watteyenergy.pk
Engr. Reyyan Niaz Khan
Founded the company in 2018 and leads it.
Founder profileAli Ahmed
The products belong to Wattey Energy, which runs customer operations. I lead energy systems and product engineering; I am not a founder of the company.
My profile on the company’s websiteWattey Energy’s engineers handle installation, rollout and training at client sites; I build the software they deploy.
Wattey Energy’s wider clients: solar, audits and engineering work
Clients of the company’s wider work, not users of the software above.
- Nishat
- Nishat Chunian
- LUMS
- LESCO
- FWO
- Government of Punjab
- DHA Multan
- Lahore Cantonment Board
- Cooperative Model Town Society
- Pakistan Oxygen
- Warid
- PIFD
- WWF Pakistan & WCB
- Kickstart
- Daftarkhwan
- COLABS
- Al Kareem City
- Bread & Beyond
- Popcorn Studio
- Duck Donuts
- InstaPrint
06 / Questions, answered
Questions, answered.
For buyers, for people hiring or partnering, and about the company. Every answer matches the facts on this page.
For buyers
01Who built WattEY, WattEY STS, WattEY Metering, WattEY Sub-Billing and Solar Performance Cloud?
Ali Ahmed, Head of Energy Systems & Product Engineering at Wattey Energy (formerly BijliBachao.pk) in Lahore, designed and built all five, plus the company website, starting in October 2025. Wattey Energy owns and operates the products.
02Which product fits my site?
Factories, hotels and offices: WattEY. Solar plants and EPC portfolios: Solar Performance Cloud. Switching between solar and grid: WattEY STS. Malls and plazas billing tenants: WattEY Metering. Hostels and shared rooms: WattEY Sub-Billing.
03Are all five products live?
Yes. WattEY has been live since November 2025, Solar Performance Cloud since 30 January 2026 and WattEY Metering since 5 March 2026; WattEY STS is live too. WattEY Sub-Billing has been live in its first building, Rehma Hostel, since October 2026, and its first real billing month is in progress. The figures on this page are dated snapshots, not live counters.
04How do the five products fit together?
They cover the five layers of a site’s energy. WattEY measures grid use, solar export and generator runs; Solar Performance Cloud checks solar output string by string; WattEY STS switches between solar and grid; WattEY Metering and WattEY Sub-Billing turn photographed meter readings into bills. WattEY, STS, Metering and Sub-Billing form the WattEY family, and Solar Performance Cloud is a separate platform. Each is its own product, so a site uses the ones it needs.
05What engineering standards are they built to?
Solar Performance Cloud is aligned to IEC 61724-1 (how PV performance is monitored) and IEC 62446-1 (PV testing and documentation); its fault categories use that standard’s test vocabulary. The alignment is partial and stated as such: it is not a certification, and the platform computes no performance ratio. On the Industrial STS variant, transfer-switch interlocking follows IEC 60947-6-1.
06How do I get a demo?
Message Wattey Energy on WhatsApp at +92 323 4578775 for a free live demo of any of the five products.
07Which companies use these platforms?
Wattey Energy’s clients use them at sites across Pakistan, including Lahore Continental Hotel, Mall of Mureedkay, Al Haram Paper Mill, FANZ Spinning Mill, Zahoor Dairy Farm, Popular Sole, Beco Steel and Rehma Hostel. They are clients of Wattey Energy (formerly BijliBachao.pk); Ali designed and built the platforms they use.
08Does it need equipment at my site?
Usually, yes. WattEY reads meters the company installs, Solar Performance Cloud reads your inverters’ cloud data with a monitoring device the company installs at each plant, and STS is a switching device. The billing products read the building’s meters with an Android app.
09Does Solar Performance Cloud work with my inverter brand?
It reads 7 inverter cloud platforms from 6 manufacturers, including Huawei, Sungrow, Growatt, Solis, Canadian Solar and GoodWe, and compares strings the same way across them.
10How is Solar Performance Cloud different from my inverter’s app?
An inverter app reports what its own brand produced. Solar Performance Cloud compares each panel string with its neighbours across brands and flags what deserves an engineer’s attention.
11Can tenants check their electricity bill?
Yes. Each WattEY Metering bill carries the photograph of the meter it was read from. In the 25 August 2026 snapshot, all 668 readings had a photo.
12How are hostel residents billed if they move in or out mid-month?
WattEY Sub-Billing shares a room’s metered electricity by the dates each resident stayed. Rooms are metered, not individual people.
13Do these products calculate carbon emissions?
No. They keep metered electricity, solar generation, generator activity and photo-backed readings that an accountant or verifier can work from. They do not calculate emissions or issue certificates.
For exporters: the energy records your buyers ask for.
| WattEY | Metered grid electricity and recorded generator activity |
|---|---|
| Solar Performance Cloud | Solar generation records, string by string |
| WattEY Metering | Photo-backed meter readings |
| WattEY STS | Confirmed changes of supply source, where supported |
Hiring and partners
14Can Ali build something similar for my organisation?
Yes, as a new build scoped to your requirements. Wattey Energy’s products themselves are adopted through Wattey Energy, not licensed by Ali.
15What was Ali’s role, exactly?
Ali leads energy systems and product engineering. He designed and built the products, the company website and the field apps; Wattey Energy’s engineers handled installation, rollout and training, and the company runs customer operations.
16What broke in production, and what changed because of it?
Two lessons from Solar Performance Cloud shaped the design. At dawn, strings on the same inverter wake minutes apart, and the first alerting version raised a flood of false critical alerts one morning; the waking window is now its own state, so real faults are not hidden by simply lowering sensitivity. And inverter clouds replay old readings, so a plant can look healthy while nothing new arrives; every replayed reading is now refused before it reaches a calculation.
17How is a purpose-built platform different from buying an off-the-shelf energy product?
Off-the-shelf platforms suit many teams. The difference is who owns the decisions. A bought platform brings its own idea of a site, the brands it supports and what a billing month means. A purpose-built one encodes what the business needs — Pakistan’s seasonal time-of-use windows, net-metering import and export kept separate, automatic generator detection, bills backed by meter photos — and the organisation keeps the system, the data and the roadmap.
18What can an investor or strategic partner assess?
The products, the dated operating evidence on this page, the two open datasets, the engineering decisions behind them and the customer problems they address. It is a starting point for a conversation, not a claim of audited returns, recurring revenue or guaranteed savings, and not an offer of equity.
19Is Ali open to new roles or partnerships?
Yes. Ali is open to senior energy-technology and product-engineering roles, and to well-defined partnerships.
20How current are the figures?
Each figure carries its own date. Operating figures are from the 25 August 2026 snapshot, WattEY Sub-Billing figures are from October 2026, and the page shows when it was last updated.
21Is the data public?
Yes. Two open datasets are published under CC BY 4.0: WattEY production data and Solar Performance Cloud performance data. Each is dated and explains its definitions.
About the company
22What is Wattey Energy?
A Pakistani energy company in Lahore, formerly BijliBachao.pk, founded in 2018 by Engr. Reyyan Niaz Khan. It does solar, energy-audit and engineering-design work and runs its own energy products.
23Is this the same company as Bijli Bachao in India (bijlibachao.com)?
No. Wattey Energy (formerly BijliBachao.pk) is a Pakistani company based in Lahore and is not connected to the Indian website.
24Who founded the company?
Engr. Reyyan Niaz Khan (Energy Systems Consultant · Founder, BijliBachao.pk). Ali Ahmed leads energy systems and product engineering and is not a founder of the company.
Let’s talk
Hiring, building or backing something in energy?
I lead the product, engineer the system and take it into production. Pick the door that fits.
Want WattEY at your site? Book a free demo with Wattey Energy