Home Lift, Pressure Pump and Gate Motor on Solar

Big bungalows in DHA, Bahria Town, Gulberg or Faisalabad's newer schemes often have all three, plus several ACs. This guide explains how to plan solar around them.

Why motors are the tricky loads

A fan or a light draws steady power. A motor draws a burst of current for a moment as it starts from standstill, then settles to its running current. How big and how long that burst is depends on the motor and how it is started: direct on line, through a capacitor, a soft starter or a variable-speed drive (VFD).

A hybrid inverter has two limits:

• Continuous rating: what it can supply for hours.
• Surge rating: what it can supply for a few seconds or less.

When the grid is present, many hybrid inverters can pass heavy starts to the grid. During load-shedding, the inverter and battery carry the whole surge alone. That is when overloads and beeping appear. Our guide inverter showing overload or beeping explains what the alarms mean.

The water motor that fills your overhead tank is covered in detail in our home water pump on solar guide. This page deals with the other three motors.

Diagram

Home lifts and pressure boosters

Lift

Short, heavy starting load

Booster

Frequent motor starts

Home lifts

What a home lift draws

Home lifts come in several types: traction lifts with a machine room or machine-room-less design, hydraulic lifts, screw-driven lifts and pneumatic vacuum lifts. An engineering guide on home lift power puts typical connected load at roughly 1.5 to 5 kW, depending on type, capacity and speed. Smaller two- to three-person lifts sit at the lower end. Hydraulic lifts draw a strong pulse on the way up; pneumatic lifts draw heavily going up and very little coming down.

The energy used per trip is small. A lift is a power problem, not an energy problem. Its peak, not its daily units, decides the inverter size.

Single-phase or three-phase?

Some home lifts run on single-phase; many larger ones need three-phase. This matters a lot for solar:

• A three-phase lift on backup needs a three-phase hybrid inverter, or a design that supplies all three phases during outages. A single-phase inverter cannot run it.
• A single-phase lift can run on a single-phase inverter, if its surge fits.

Ask your lift vendor for the connected load, phase and full-load current before the solar design starts. Our guide to three-phase vs single-phase inverters explains the options, and parallel inverters covers larger homes that need more than one unit.

VFD drives and regeneration

Modern traction lifts usually run through a variable-voltage, variable-frequency drive. That is good news for solar: the drive starts the motor gently, so the surge is much smaller than a direct-on-line start.

Some drives are regenerative. When a heavy car goes down or a light car goes up, they send energy back into the supply. On the grid this is absorbed. On an inverter running off battery, it may not be, depending on the model. We check this with the lift vendor before choosing the inverter.

The rescue device is not backup

Most lifts have an automatic rescue device (ARD): a small battery unit that moves the car to the nearest floor and opens the doors when power fails. It is a safety feature, not a way to keep the lift in service. If you want the lift to run normally during load-shedding, it must be on the solar system's backed-up circuits, with the inverter and battery sized for it.

Transfer time

When the grid fails, the hybrid inverter switches to battery. If it does so quickly, the lift may not notice; if the transfer is slower, the lift controller may stop the car and the ARD may operate. Our guide to hybrid inverter transfer time explains the difference.

Water pressure boosters

A pressure booster pump keeps taps and showers at good pressure across several floors. Unlike the tank-filling pump, it can start dozens or hundreds of times a day, every time someone opens a tap.

What that means for solar:

• Frequent starts. Each start is a small surge. During outages, many starts mean repeated stress on the inverter and battery.
• Pressure tanks help. A properly sized pressure vessel reduces how often the pump starts.
• VFD boosters are kinder. A variable-speed booster ramps up gently and runs only as fast as needed. It suits solar better than a fixed-speed pump with a pressure switch.
• Night use draws on the battery. Showers and washing after sunset run the booster from the battery in SBU mode. See SBU and SUB modes.

Gate motors

Sliding and swing gate motors are small and run for seconds at a time. Their energy use is tiny. Many come with their own small backup battery.

The points to check:

• The gate's own battery should stay charged; it keeps the gate working even if the solar system trips.
• Starting surge is small, but a gate opening at the same moment as a lift start and an AC restart after a power cut adds up.
• Wiring and protection. Outdoor motors need weatherproof connections, a suitable breaker and an RCCB where appropriate. See breakers and protection.

Sizing a bungalow system with all three

Size for the worst moment, not the average day. The worst moment is usually just after the grid fails or returns, when several motors and ACs try to start together.

1. List everything that may run at once on backed-up circuits: ACs, fans, fridge, lift, booster, gate.
2. Add their running power. Example arithmetic only: two inverter ACs at about 1.2 kW each, lights, fans and fridge at about 0.8 kW, and a booster at about 0.8 kW come to about 4 kW.
3. Add the lift. A lift with about 3 kW connected load brings the total to about 7 kW, before starting surges.
4. Check the surge headroom of the inverter and the battery's maximum discharge rating against that total plus the largest single start.
5. Stagger restarts. Many inverters and AC controllers allow delayed restarts after an outage, so motors do not all start at once.

This is why bungalows with lifts often need a 10 kW class system or larger, three-phase or paralleled. Our guide to solar system size for marla and kanal houses shows typical sizes, and can you run your whole house on solar? covers the bigger picture. For battery energy, see our battery sizing guide.

What to back up. You do not have to put every motor on battery. Many owners back up the lift, booster and gate but leave large ACs on the grid during outages. That choice can reduce the battery and inverter size considerably.

A note on net billing

New connections come under net billing, available to three-phase consumers. Many larger bungalows are already three-phase, which also suits a three-phase lift. See our net metering and net billing guide.

How Solar Works Pakistan designs for motor loads

Solar Works Pakistan is a Faisalabad-headquartered solar EPC, engineering and trading company founded in 2021, with a branch in Lahore. We have served 300+ customers and design systems from about 6 kW.

• We collect the lift, pump and gate details from your vendors before design.
• In-house engineering sizes the inverter and battery for surges, not just daily units.
• Installation and commissioning by our own teams, with backed-up circuits labelled clearly.
• Manufacturer warranty per product; 1-year service warranty under applicable project terms.

Lahore homeowners can see our Lahore page and DHA and Bahria Town guide. Prices by size are on the inverter price and complete system price pages.

Get today's price or a free site survey

Send us your lift vendor's data sheet, your pump and gate details, your AC list and 12 months of bills. Our engineers will size the system so your motors start cleanly, including during load-shedding.

• 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 all of Punjab, and site surveys are normally free. You can also contact us online.

Frequently asked questions

Can a home lift run on solar during load-shedding?

Yes, if it is on the backed-up circuits and the inverter and battery are sized for its peak power and phase. A three-phase lift needs a three-phase backup supply.

Will my lift's rescue device keep it running on solar?

No. The rescue device only brings the car to a floor and opens the doors. Normal service during outages needs the lift on the solar system's backup.

Why does my inverter beep when the pressure pump starts?

The pump's starting surge, plus other running loads, is reaching the inverter's surge limit. A pressure tank, a VFD booster or staggering heavy loads usually helps.

Do gate motors need solar backup?

Usually not, because most have their own battery. Keep that battery healthy. Putting the gate on backed-up circuits is a convenience, not a necessity.

What size solar system does a house with a lift need?

It depends on the lift's load and phase, and on what else runs at the same time. Bungalows with lifts and several ACs often need a 10 kW class system or larger.

Is a VFD lift better for solar?

Generally yes, because it starts the motor gently. Check whether it regenerates power and whether your inverter can accept that.

Sources

1. Studio Matrx, "Lift power requirements" (home lift connected load by type, ARD function, VVVF drives)
2. 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