--- title: "Bijli Bachao" headline: "Bijli Bachao — five live energy platforms measuring what a building uses and generates" description: "Ali Ahmed designed and built BijliBachao.pk’s energy platform suite — WattEY, Solar Performance Cloud, Metering and STS — running live across Pakistani factories, solar plants and shopping malls." canonical_url: https://alioahmed.com/work/bijli-bachao type: case-study role: "Head of Energy Systems & Product Engineering" date_label: "October 2025 – present" status: live date_modified: 2026-09-24 author: name: "Ali Ahmed" url: https://alioahmed.com/ orcid: https://orcid.org/0009-0007-4265-3295 key_figures: - "5 platforms built and running" - "1.92 GWh energy measured by WattEY" - "874 PV strings graded by SPC" - "668 TenantBill readings, all photographed" entities: - name: "BijliBachao.pk" type: Organization url: https://www.bijlibachao.pk/ - name: "Reyyan Niaz Khan" type: Person - name: "Solar Performance Cloud" type: SoftwareApplication url: https://spc.bijlibachao.pk/ - name: "WattEY" type: SoftwareApplication url: https://wattey.bijlibachao.pk/ - name: "IEC 61724-1:2017 — Photovoltaic system performance, Part 1: Monitoring" type: DefinedTerm url: https://webstore.iec.ch/en/publication/33622 - name: "IEC 62446-1:2016 — Photovoltaic (PV) systems: requirements for testing, documentation and maintenance, Part 1" type: DefinedTerm url: https://webstore.iec.ch/en/publication/24057 person_same_as: - https://www.linkedin.com/in/alioahmed/ - https://github.com/alioahmed - https://orcid.org/0009-0007-4265-3295 - https://x.com/Alioahmed_ - https://about.me/alioahmed - https://dev.to/alioahmed - https://medium.com/@alioahmed - https://hashnode.com/@alioahmed - https://substack.com/@alioahmed - https://huggingface.co/alioahmed - https://bsky.app/profile/alioahmed.bsky.social - https://mastodon.social/@alioahmed - https://www.kaggle.com/alioahmed - https://www.producthunt.com/@alioahmed - https://www.patreon.com/cw/alioahmed - https://www.goodreads.com/user/show/202106301-ali-ahmed - https://fueler.io/alioahmed - https://gitlab.com/alioahmed - https://linktr.ee/alioahmed - https://topmate.io/alioahmed related: - https://alioahmed.com/work/solar-performance-cloud - https://alioahmed.com/work/cognilium - https://alioahmed.com/work/wonder-women full_corpus: https://alioahmed.com/llms-full.txt site_index: https://alioahmed.com/llms.txt --- # Bijli Bachao > Ali Ahmed leads BijliBachao.pk’s software stack as Head of Energy Systems & Product Engineering: a suite of production platforms covering the commercial energy lifecycle. WattEY measures what a business pulls from the grid, Solar Performance Cloud inspects what its solar generates, Metering bills multiple tenants from photo-verified readings, and STS handles changeover between supply sources. All run live in Pakistani industry today. **Canonical URL:** https://alioahmed.com/work/bijli-bachao **Role:** Head of Energy Systems & Product Engineering — October 2025 – present **Summary:** Ali Ahmed designed and built BijliBachao.pk’s energy platform suite — WattEY, Solar Performance Cloud, Metering and STS — running live across Pakistani factories, solar plants and shopping malls. ## Key figures - **5** — platforms built and running - **1.92 GWh** — energy measured by WattEY - **874** — PV strings graded by SPC - **668** — TenantBill readings, all photographed BijliBachao.pk is a Pakistani solar and energy-automation company founded by Engr. Reyyan Niaz Khan — UET Lahore, 14+ years in Pakistan’s energy sector, and a pioneer of digital energy auditing in the country. It describes itself as an engineering design house rather than a solar installer, and it builds its own software rather than buying it. Ali built that software. Five platforms, one obsession: get the number right. Four of them answer a factory director’s question — where the electricity went and what it cost — spread across four measurements nobody had joined up: what the site pulled from the grid, what its own solar generated, what each tenant owes, and which source was carrying the load at the time. The fifth takes that same fairness to a different kind of building — shared living, where the residents change, not the machines. ### The five platforms - **WattEY — IoT electricity monitoring, every three minutes** — 43 meters across 19 organisations — hotels, textile, paper and rice mills, dairy, malls, cold storage — with 1.92 GWh monitored since November 2025. Three-minute live refresh, Pakistan-specific seasonal time-of-use tariffs, automatic generator detection, and solar import/export tracking. - ~156,000 individual measurements a day — voltage, current, power and power factor, per phase - 635.76 kW highest peak load recorded at a single site - Multi-tenant dashboard: clients see only their own sites, 4 user roles - **Solar Performance Cloud — independent, string-level solar inspection** — An independent inspection layer over solar plants that already exist: 92 sites, 115 inverters and 874 PV strings graded individually, unifying seven inverter cloud platforms from six manufacturers — 1.80 GWh of generation tracked since January 2026. - Every string graded against its own neighbours, not against a fixed threshold - Fault diagnosis that names the cause: dust, shading, a dead panel, a broken wire - Found an entire inverter — thirteen strings — producing nothing for two days - **TenantBill by WattEY — photo-verified OCR billing** — Live at a shopping mall in Punjab: five consecutive monthly cycles closed across 668 meter readings — every one carrying a timestamped photograph of the meter face, and billed from one published formula. ~111 meters billed monthly across a ~545-unit property. - Month-close with frozen, immutable snapshots and a full audit trail - Every bill carries its meter photograph; the invariants are enforced in the database, not the app - 3 weeks from signed contract to a live billing cycle - **WattEY STS — smart transfer switch** — The changeover layer. A Pakistani industrial site runs on the grid, on its own solar and on a diesel generator, switching between them through the day — and until that switching is recorded, nobody can say which source actually carried the load, or what each hour of production truly cost. STS is live. - Completes the picture the other three platforms measure - Generator runtime is the hardest number in an industrial energy account to produce - **Wattey Sub-Billing — fair per-resident electricity billing** — A different building entirely: shared living, where the residents change, not the machines. It divides one bulk electricity bill into fair per-resident bills — measured from real readings and the exact time each person was present, even as people move in and out — for a 265-bed residential property across 94 rooms and ~160 sub-meters. Built, independently stress-tested, entering production. - Measured, not estimated — each person billed for what they used and the days they were there - Mid-cycle move-in/out settled to the paisa; a leaver’s final bill ready the day they go - 300+ automated proofs · 70+ billing test cases before it billed a rupee ### The number the factory actually needed One Bijli Bachao client manufactures clothing for global brands. They did not ask how their solar was performing. They asked how much carbon they had avoided — because their buyer wanted the figure. That request is becoming a condition of trade rather than a courtesy. Major apparel buyers now require Scope 1 and Scope 2 emissions data at mill level as part of qualifying a supplier at all. The EU’s carbon border mechanism became a live financial obligation in January 2026, with extension to textiles signalled for 2027, and exporters who cannot supply verified installation-level emissions data are priced against default values drawn from the highest-emitting producers. For Pakistan, where textiles are close to 60% of exports and over a third of them go to Europe, that is not a reporting problem. It is a margin problem. And a renewable-energy claim is only as good as the meter behind it. A certificate representing one megawatt-hour of clean generation has to trace back to measured, auditable output — Pakistan’s certificate issuer has asked registrants for photographs of their meters and evidence of calibration. Which reframes what these platforms are. Measuring generation string by string, capturing consumption per tariff period, recording generator runtime automatically, and photographing every meter reading with a timestamp are not four unrelated features. They are the evidence a factory needs to prove what it consumed, what it generated, and what it burned. ### How it’s built — the engineering moat All three platforms share the same discipline, applied to Pakistani energy software from day one: - International standards: IEC 61724-1 health scoring and IEC 62446-1 five-state string classification — what utility-scale operators use globally. - Multi-tenant SaaS architecture with org-scoped data isolation and role-based access control, the way enterprise buyers expect SaaS to be built. - An observability baseline — error tracking, hourly system-health audits, health endpoints — plus enterprise-readiness audits across the suite. - Operator-handover discipline: runbooks, audit reports, and change logs, so the software is maintainable by any competent operator, not dependent on its builder. ### Who runs on it These are the platforms’ production clients — real Pakistani businesses: Lahore Continental Hotel, Al Haram Paper Mill, FANZ Mills, Amna Dyeing & Finishing, Qadir Engineering, Zahoor Dairy Farm, and commercial sites in Gulberg, Lahore. Ali is the builder and Head of Energy Systems & Product Engineering; operations stay with the BijliBachao team. ## FAQ ### Are the Bijli Bachao platforms actually live? Yes — they run in production today, in real factories, malls and solar plants. WattEY has measured around 1.92 GWh across 43 meters (19 organisations) since November 2025. Solar Performance Cloud grades 874 PV strings across 92 solar sites and has tracked 1.80 GWh. Metering closes a real monthly billing cycle at a Pakistani shopping mall — five consecutive months, 668 readings, every one photographed. STS handles changeover between supply sources. ### What engineering standards are they built to? Solar Performance Cloud is aligned to IEC 61724-1, which defines how photovoltaic performance is measured and reported, and to IEC 62446-1, which defines commissioning tests and inspection for grid-connected PV — its fault classifications use that standard’s test vocabulary. Both alignments are partial and stated as such: the platform has no irradiance sensors, meets no IEC monitoring class, computes no performance ratio and performs no commissioning tests. Across the suite, the shared discipline is multi-tenant architecture with organisation-scoped data isolation and role-based access. ### What is Ali Ahmed’s role at Bijli Bachao? Head of Energy Systems & Product Engineering, since October 2025. He designed and built the platform suite and the company website. BijliBachao.pk was founded by Engr. Reyyan Niaz Khan, and daily operations stay with the BijliBachao team — Ali is the builder and Head of Energy Systems & Product Engineering, not the account owner. ### How do the five platforms fit together? Four of them answer a factory director’s question from four sides. That question — where the electricity went and what it cost — is spread across four measurements nobody had joined up: WattEY measures what the site pulled from the grid, Solar Performance Cloud measures what its own solar generated, TenantBill allocates and bills consumption across tenants, and STS records which source was carrying the load. Together they are one account of a site’s energy. The fifth, Wattey Sub-Billing, is a separate product for a different building type — shared living, where the residents move in and out — dividing one bulk bill fairly per resident by what each used and the exact time they were there. Each is its own product; the thread is one discipline — measure it, and get the number right. --- Rendered from the structured content at https://alioahmed.com/work/bijli-bachao. Facts trace to the canonical bio; render, don't reword.