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PTR SOLAR

HOPE 5.0LW-B1

Store energy by day.Use it at night.

A compact LiFePO₄ battery that stores solar energy during the day so it’s available in your home at night.

See how it worksView specifications

5.12 kWh rated capacity

SCALABLE

Start with one unit.Add more later.

Begin with a 5 kWh battery and add another unit as your energy needs grow.

  • 5.0 kWh usable capacity
  • Up to 48 units in parallel
  • Up to 240 kWh system capacity

ENERGY STORAGE

More capacity,available when you need it.

High energy density and up to 92% depth of discharge make more of the stored energy usable.

  • LiFePO₄ battery
  • Up to 92% DoD
  • Compact wall-mounted design

NIGHT POWER

Clean energy,ready after sunset.

At night, your home runs on energy stored during the day — no engine noise, no fuel.

Meet HOPE 5.0LW-B1

Safe. Quiet. Reliable.

A filament light bulb powered by stored solar energy

AFTER SUNSET

The sun goes down.The stored energy stays.

Solar energy stored during the day is available at night, when usage rises.

ENERGY, STORED

Energy stored,ready to use.

The HOPE battery stores solar energy and supplies it quietly and safely when it’s needed.

READY WHEN NEEDED

From stored energyto light.

Reliable power after sunset, with up to 92% depth of discharge and expandable capacity.

HOPE 5.0LW-B1

Explore energy storage

The system

Starts as one unit. Scales to a full system.

HOPE 5.0LW-B1 stores the energy your panels produce during the day and releases it when you need it — at peak tariffs, during outages or grid fluctuations, or after sunset. Each unit is self-contained and wall-mounted, so whether you install one or twenty, the setup stays compact and orderly.

Units connect in parallel — up to 48 of them — so a home system can expand into a commercial one without replacing the existing equipment.

Products

A battery to store it. An inverter to convert it.

Two Growatt units that together make a complete system — storage on the wall and conversion beside it. Full specifications on each page.

Growatt HOPE 5.0LW-B1 wall-mounted lithium iron phosphate battery pack

GrowattResidential energy storage

HOPE 5.0LW-B1

A wall-mounted LiFePO₄ battery pack that stores what your array makes during the day and releases it after dark. One unit holds 5 kWh usable; up to 48 packs run in parallel, so the same hardware covers a house or a small commercial site.

  • 5.12 kWh rated capacity
  • 92% depth of discharge
  • ≥6000 cycles at 80% DoD
View specifications
Growatt SPF 6000 ES-H off-grid and hybrid solar inverter

GrowattOff-grid and hybrid inverter

SPF 6000 ES-H

A 6 kW off-grid and hybrid inverter with two MPP trackers and a 500 V PV ceiling. It decides between solar, battery and grid on rules you set, drives two AC outputs for smart-load switching, and parallels up to six units as the site grows.

  • 6000 W rated output
  • 8000 W max. PV array
  • 2 MPP trackers
View specifications

Installation

Installed in an afternoon. No routine maintenance.

The battery management is built into the unit, so setup means mounting it, connecting it, and configuring the parallel group. There are no fans to service and no routine maintenance.

Talk to an installerDownload the datasheets

Feasibility study

See how much a system would produce on your site.

Tell us where the site is and how much land it has. We pull the actual irradiance and temperature for those coordinates from NASA POWER, size the array, and return the generation, cost and payback as a downloadable report.

Currency
Enter every monetary value in the currency you choose here. The built-in cost defaults are in USD, so under IRR the cost fields must be filled in.
Rial per 1 USD. Bridges the two currencies — needed to use the SATBA (Rial) tariff in a USD study or the per-MW (USD) cost in an IRR study, and to show results in both.
Where is the site?
System size
The whole plot — we apply a packing factor to it.

Assuming 600W modules · 20% packing · 20 year study · 10 year loan at 23% · 10% discount rate. Open this to change any of it.

Irradiance and temperature come from NASA POWER for the coordinates you choose. Your location is only used to run this study.

Contact

Get in touch about your site.

PTR SOLAR CO supplies solar energy equipment: LiFePO₄ storage and off-grid inverters from Growatt, sized and specified for the site they are going on rather than sold from a shelf.

Send the location and the roof or land you have in mind, and we’ll return a system size, a bill of materials and a price. If you’d rather see the numbers yourself first, the tool on this page runs the same calculation.

Run a feasibility studySee the equipment

Contact details are being set up. In the meantime, run a feasibility study and we’ll pick it up from there.