Guides · Faisalabad, Lahore, Punjab
Solar for Diagnostic Labs and Clinics
Short answer
Solar for diagnostic labs and clinics works well because most of their load, analysers, sample fridges, computers and air conditioning, runs in daylight. The key design rule is to keep sensitive instruments on their own online UPS, with solar and a hybrid inverter supplying that UPS, rather than wiring analysers straight to an inverter. A battery then carries the lab through load-shedding, and the grid or generator covers the rest.
This guide is for owners of diagnostic laboratories, collection centres, small clinics, dental and imaging practices in Punjab. Large hospitals with wards, theatres and 24-hour loads are covered in our solar for hospitals guide.
A note on scope: we design power supply systems. We do not make claims about medical or laboratory equipment. Each instrument's power requirements come from its manufacturer and your own technical staff, and we design circuits to meet them.
How a lab uses power
A diagnostic lab's load pattern is different from a hospital's:
- Mostly daytime. Sampling, processing and reporting peak in the morning and early afternoon. That matches solar output well.
- Some 24-hour loads. Reagent fridges, sample freezers and some instruments stay on overnight.
- Heavy cooling. Analysers and reagents need stable room temperatures. In a Punjab summer, AC is often the biggest load. See solar for AC.
- Sensitive to interruption. A dip in supply mid-run can stop an analyser, force a recalibration or waste reagents and samples.
That last point shapes the whole design.
Labs and clinics
Sensitive kit
Needs clean, stable power
Backup
Battery for outages
Split the lab into three groups of circuits
Before sizing panels, list every load and group it:
| Group | Examples | Supply design |
|---|---|---|
| Sensitive instruments | Analysers, centrifuges with controllers, lab computers and LIS server, network | Dedicated online UPS, fed by the hybrid inverter and battery |
| Essential | Reagent and sample fridges, freezers, key lighting, reception | Hybrid inverter backup circuits |
| General | General ACs, waiting areas, signage | Grid and solar; can be shed in long outages |
Your lab manager and the equipment suppliers decide which instruments belong in the first group. Separating these circuits lets a modest battery protect what matters instead of carrying the whole building.
Why an online UPS still matters
People often ask whether a hybrid solar inverter can replace their UPS. For a lab, the answer is usually no.
- Transfer time. When the grid fails, a hybrid inverter switches to battery. Many do this quickly, but some have a short transfer. Our guide to hybrid inverter transfer time explains the difference.
- Double conversion. An online (double-conversion) UPS rebuilds the supply continuously, so the instrument never sees the switch at all. Laboratory UPS units are marketed for exactly this job: analysers, sequencers and other sensitive test equipment.
- Instrument requirements. Many analyser makers specify the type of UPS they expect.
The practical design: solar and battery feed the UPS; the UPS feeds the instruments. The UPS battery only needs to bridge seconds or minutes, because the solar battery and generator carry the longer outage. Depending on the UPS model and the instrument makers' requirements, that can reduce how much UPS battery the lab needs.
Clean power: earthing, surges and harmonics
Sensitive equipment needs a quiet supply as much as a continuous one.
- Earthing. A proper, tested earth for the solar system and the lab's distribution boards. Shared or poor earths cause noise and nuisance faults. See solar earthing and surge protection.
- Surge protection on both the DC and AC sides, coordinated with the lab's existing protection.
- Harmonics. Inverters, UPS units and inverter ACs all contain power electronics. Together they can distort the supply waveform. Choosing inverters with low distortion and checking the result at commissioning keeps this in hand. Our guide to harmonics and power quality explains why.
- Equipment location. Keep the inverter and battery in a ventilated room away from the lab bench and sample storage. See where to install your inverter and battery.
All tests needed for safe commissioning are completed before handover. Our guide how we test and commission a solar system describes the checks.
Choosing the system type
Most labs and clinics suit a hybrid system: solar for daytime energy, a battery for outages, and the grid as the main supply. An on-grid system alone switches off during load-shedding, which defeats much of the purpose for a lab. Our guide to hybrid vs on-grid vs off-grid compares them.
Larger labs and collection networks often run on three-phase supply, which suits three-phase hybrid inverters and commercial batteries. For these we work with Huawei, Sungrow and Luminey, chosen per project. Systems start from about 6 kW.
Sizing the battery
The battery is sized for the sensitive and essential groups only, for the outage length you want to cover. Two ratings matter:
- Power (kW): how much load it can carry at once, including the UPS's own draw while recharging.
- Energy (kWh): how long it can carry that load.
Example arithmetic only: if the sensitive and essential groups draw about 3 kW together, and you want to cover a 2-hour outage, that is about 6 kWh delivered. After allowing for depth of discharge, losses and ageing, the battery would be specified somewhat larger than 6 kWh. Our battery sizing guide shows the full method.
Do not forget overnight loads. Fridges and freezers running all night draw from the battery after sunset unless the system is set to use the grid at night.
Net billing
New solar connections come under NEPRA's net billing rules, notified on 9 February 2026. Imported units are billed at your normal tariff, and exported units are credited at a much lower rate. System size cannot exceed your sanctioned load. Labs use most of their solar output on site during working hours, which suits these rules. See our net metering and net billing guide.
Lab and clinic solar price
| Facility | Typical scope | Price |
|---|---|---|
| Small clinic or collection centre | Hybrid solar with battery for essential circuits | WhatsApp for today's rate |
| Diagnostic lab | Three-phase hybrid solar, battery, separated instrument circuits feeding existing UPS | WhatsApp for today's rate |
| Multi-floor lab or imaging centre | Larger hybrid plant, commercial battery, generator integration | WhatsApp for today's rate |
For home-scale system prices, see the complete solar system price guide.
What to prepare before a site survey
- 12 months of electricity bills.
- A list of analysers and instruments, with their power ratings and the UPS each one uses now.
- Working hours and any 24-hour loads.
- Generator rating and running hours, if you have one.
- Roof access and any shading from neighbouring buildings.
How Solar Works Pakistan works with labs and clinics
Hospitals are one of the sectors we serve, and our specialist areas are hybrid power systems and BESS. Our power-generation experience goes back to the 1980s through our founder, Akram Ullah Khan; Solar Works Pakistan itself was founded in 2021 and has served 300+ customers.
- In-house load analysis, engineering and AutoCAD design.
- Circuits separated and labelled so staff know what stays on during outages.
- Installation and commissioning by our own teams, with tie-in work scheduled outside testing hours where possible.
- Manufacturer warranty per product; 1-year service warranty under applicable project terms.
- After-sales support by our own engineers, with a 48-hour target to send service personnel after a complaint is registered.
See our industrial and commercial solar page for larger projects.
Get today's price or a free site survey
Send us your bills, your instrument list and details of your current UPS units. We will design around continuity first.
- WhatsApp or call: 0336 666 4321
- Email: info@solarworks.pk
- Head office: Main Boulevard, Sargodha Rd, Block F FDA City, Faisalabad
- Lahore branch: 2nd Floor, Jeff Heights, Gulberg, Lahore
- Hours: 9:00 AM to 6:00 PM, daily
We serve labs and clinics throughout Punjab, and site surveys are normally free. You can also contact us online.
Frequently asked questions
Can a diagnostic lab run on solar?
Most of a lab's daytime load can come from solar, because sampling and testing happen in daylight. A battery carries essential loads through outages, and the grid or generator supplies the rest.
Can a hybrid inverter replace the UPS on our analysers?
Usually not. Keep the online UPS on sensitive instruments and feed it from the hybrid inverter. The UPS covers the switchover; the solar battery covers the longer outage.
Is solar power safe for laboratory equipment?
A well-designed system with proper earthing, surge protection and suitable inverters supplies stable power. Each instrument's requirements come from its manufacturer, and we design the supply to meet them.
How big a battery does a clinic need?
It depends on the power of the circuits you want to keep running and for how long. Sizing only the essential and sensitive circuits keeps the battery affordable.
Will installation interrupt our testing?
Most work happens on the roof and in the electrical room. The final tie-in to your boards is planned with you and done in a short, scheduled window.
Do small clinics need three-phase solar?
Not always. It depends on the clinic's connection and load. Larger labs and imaging centres are usually three-phase.
Sources
- Consulting-Specifying Engineer, "Biomedical- and laboratory-grade UPS" (online double-conversion UPS for analysers and lab instruments)
- Net billing facts are carried over from our net metering and net billing guide, which lists its own sources, including the NEPRA (Prosumer) Regulations, 2026, SRO 251(I)/2026: https://ke.com.pk/wp-content/uploads/2026/04/8.-NEPRA-Prosumer-Regulations-SRO-251I2026-09-02-26.pdf