Solar & energy
Trina Solar modules, Sungrow inverters and energy storage, sized, designed, supplied and installed by Endless Energy.
Trina Solar · PV modules
TSM-730NEG21C.20
N-type i-TOPCon, bifacial and dual-glass: highly efficient, reliable and built to withstand harsh weather. The rear side also catches light reflected off the ground and snow, adding 5–20% more energy depending on the installation.
Sungrow · Home battery
Lithium iron phosphate batteries store daytime solar for the evening and keep your essentials running during power cuts.
Sungrow · Hybrid inverters
The inverter is the heart of the system. It turns solar power into household electricity, charges the battery and switches to backup when the grid goes down.
Savings calculator
Enter your average monthly electricity bill. We work out the system size you need and what it saves, using current ERC tariffs and Ulaanbaatar sunshine.
The total on your bill, including VAT. An average of a winter and a summer bill gives the best estimate. That is about 366 kWh a month.
Tariff
ERC 2026 household tariff: 184 / 269 / 299₮ per kWh by tier, plus 3,360₮ base fee and 10% VAT.
Recommended system
3.65 kWp solar
Solar generation
426
kWh / month, yearly average
Solar share
63%
of your electricity from solar
You save
814,840₮ per year
67,903₮ per month · 19,148,730₮ over 25 years
Estimate only. Systems are sized in whole Trina Solar Vertex 730 W bifacial modules. Uses Ulaanbaatar’s month-by-month sunshine and higher winter use, 1,400 kWh per kWp per year on average, 90% battery efficiency, no payment for power exported to the grid, and 0.5% yearly panel ageing. Your quote includes system price and payback.
Why solar
What a solar system changes for your home or business, from the first month and for decades after.
Solar power cuts how much you draw from the central grid, so you save on your electricity bill.
Generate your own electricity and cover part of your needs yourself. Surplus energy is stored in a battery, ready for when solar output drops or the power goes out.
Using renewable energy helps cut greenhouse gas and carbon emissions.
Lower electricity costs over the life of the system, and less exposure to rising energy prices.
Follow generation, consumption and battery charge from your phone or online.
Quality equipment, professional installation and regular maintenance keep your system running reliably.
01 · Residential
Lower electricity bills in the day, backup power when the grid goes down, and power for summer houses with no grid at all.
Panels and an inverter connected to the grid. Use your own solar power in the day and cut your bill.
Add a home battery to store daytime power and keep essentials running during outages.
A complete system with battery storage for summer houses and sites without a grid connection.
02 · Commercial & industrial
For factories, warehouses, offices and commercial buildings that use most of their power during the day.
Trina Solar · Commercial roofs
TSM-730NEG21C.20
Factory, warehouse and office roofs get the same N-type i-TOPCon, dual-glass bifacial modules as our home systems, laid out to cover the power your business uses during the day.
Sungrow · Commercial storage
All-in-one battery cabinets with the power converter and battery management built in. They store solar for later, cut peak demand and keep critical equipment running during power cuts.
Sungrow · C&I inverters
The inverters turn DC power from the roof into three-phase AC for your building. Several units run side by side, so the system scales with your roof.
PV systems on factory, warehouse and office roofs, sized to your daytime load.
Commercial battery systems to shift solar power, cut peak demand and add backup.
Chargers for fleet, staff and customer parking.
Our design engineers work from 0.4 to 35 kV, including the connection to your supply.
As a licensed energy service company, we can plan solar within a wider energy-efficiency project.
We supply Sungrow inverters and storage and Trina Solar modules, and look after them once they are installed.
Sungrow range: 50–150 kW inverters · 50 kWh–1 MWh storage
Request a C&I assessmentSungrow product range
Selected from the Sungrow 2026–2027 range. Full specifications and availability with every quote.
| Type | Models | Key specs |
|---|---|---|
| Hybrid inverters | MG-RL · MG-TL · SH-T series | 5–25 kW, single- and three-phase · backup in ≤10 ms |
| Home batteries | MBL · SBH series | 5–40 kWh · LFP, up to 8,000 cycles |
| Monitoring | iSolarCloud app | Live yield, savings and battery status on your phone |
| Type | Models | Key specs |
|---|---|---|
| String inverters | SG125CX-P3 · SG150CX | 125–150 kW · up to 98.8% efficiency |
| C&I hybrid inverters | SH125CX | 125 kW · solar and storage in one |
| Energy storage | PowerKeeper · PowerStack | 50 kWh to 1 MWh · modular or liquid-cooled |
Send us your equipment list or drawings and our team will prepare a quote.
