SolarXgen
Rows of solar modules at the 5 MW plant SolarXgen built at Stibium Mine, seen from a drone

Commercial solar and battery storage · since 2010

Buy power when it’s cheap. Use it at peak.

Solar and battery storage for mines, shopping centres and factories. We design it, fund it, build it and run it.

Filmed at Stibium Mine, Limpopo: 5,068.1 kWp, commissioned 8 May 2025.

How a battery pays for itself

Since 2010 we have designed 345 MW across 450+ projects, built 20 MW, and still run 18.2 MW of it across 28 sites.

EST 2010Standard Bank approvedNedbank approvedECB licensed contractorAMEU MemberPlatinum Helioscope Design Status

Battery storage

The price of electricity changes all day. A battery lets you choose when you buy it.

One weekday on a time-of-use tariff

Off-peak
Peak
Standard
Peak
00:0006:0012:0018:0024:00
83%

Supplying the site

The battery replaces grid power while it costs the most.

Illustrative weekday with no prices attached. The real periods and rates depend on your tariff and the season; your proposal is modelled on your own bill.

It buys low and supplies high

The battery charges overnight or from your own solar, then carries the site through the peak periods, when grid electricity costs the most.

It trims your demand charge

Short spikes in load are met from the battery, so the peak demand you are billed on comes down.

It keeps the solar you cannot use

Midday generation the site cannot absorb is stored for the evening instead of being lost.

Savings are metered, not assumed. MeterX Online, a related metering company, meters and verifies plant savings every month.

Battery storage in detail

Flagship · Gravelotte, Limpopo

Five megawatts for a mine, built in the bushveld.

8,814 modules feeding Stibium Mine alongside grid and generator power.

Aerial view of bare solar mounting structures at Stibium Mine during constructionAerial view of the Stibium Mine solar plant part-way through module installationAerial view of the completed 5 MW solar plant at Stibium Mine in the Limpopo bushveld

Stibium Mine, June 2025: the finished plant, commissioned 8 May 2025.

Capacity
5,068.1 kWp
Annual production
8.74 GWh
Performance ratio
83.10%
Commissioned
8 May 2025
Read the Stibium Mine project

Under construction now

Two battery plants going up now.

Aerial view of the 5 MW solar plant at Stibium Mine that Phase 2 adds toIn construction

The Phase 1 plant, June 2025. Phase 2 adds 2.59 MWp of solar and a 10 MWh battery at the same mine.

Mining · Gravelotte, Limpopo

Stibium Mine, Phase 2

A second phase at the mine where we built the 5 MW plant in 2025: more solar and a grid-scale battery on the mine's 11 kV network. The battery fills up when power is cheap and feeds the mine through Eskom's peak hours.

10 MWh

Battery storage, 5 MW

2.59 MWp

Additional solar

2 × 5 MWh

Sungrow PowerTitan 2.0 units

11 kV

Connection to the mine

How the battery runs

  1. 1Charges from surplus solar by day and from the grid in off-peak hours
  2. 2Discharges into the mine's own load in the morning and evening peaks
  3. 3About one full cycle a day, with no export to the grid

Under construction. Contracted July 2026; solar modules on site since October 2026.

See Phase 1, built and running
Four Sungrow battery cabinets on their concrete plinth at the Letaba pump stationIn construction

The four battery cabinets on their plinth at Letaba, 27 October 2026.

Mine water supply · Limpopo

Letaba Pump Station

Solar and battery storage for a water pump station owned by Stibium Mining. The battery stores surplus solar and off-peak energy and uses it when grid power costs most.

1,028 kWh

Battery storage, 500 kW

347 kWp

Ground-mount solar

4 × 257 kWh

Sungrow battery cabinets

560

LONGi 620 W modules

How the battery runs

  1. 1Charges from surplus solar and from the grid in off-peak hours
  2. 2Discharges into the pump station's load in peak periods
  3. 3Cuts peak demand on the supply, with no export to the grid

Under construction. Battery cabinets delivered and set on their plinth on 27 October 2026.

Our work

Plants we built, and still run.

All 28 projects
Emondlo Retail Mall: hybrid solar + bess by SolarXgen

Shopping centre with battery storage

Emondlo Retail Mall

Mondlo, KwaZulu-Natal

Solar
832.5 kWp
Battery
1.78 MWh
Per year
1.22 GWh
Eduvos Midrand Campus: rooftop solar + bess by SolarXgen

Campus with battery storage

Eduvos Midrand Campus

Midrand, Gauteng

Solar
387.39 kWp
Battery
0.80 MWh
Per year
0.59 GWh
Makhado Crossing: rooftop solar by SolarXgen

Our largest single rooftop

Makhado Crossing

Louis Trichardt, Limpopo

Solar
1,516.32 kWp
Per year
2.31 GWh

How it works

From your bill to a working plant.

  1. 1

    Send a recent electricity bill

    That, and the site address, is all we need to start. No site visit.

  2. 2

    Get a free desktop proposal

    We model the site from satellite imagery and your bill: solar size, battery size, savings and funding options.

  3. 3

    Site visit and final design

    Only once the numbers work and you want to go ahead.

  4. 4

    We build it and run it

    Our teams build and commission the plant, then operate and maintain it, with production and savings reported monthly.

What is your monthly electricity bill?

Pick the closest range and tell us where the site is. We will come back with a desktop proposal, free and with no obligation.

R30k–R100kR100k–R500kR500k–R1MOver R1M

Funded options generally suit sites spending R100,000 a month or more.

Funding

Fund it, or own it.

Funded: no capital outlay

A funder pays for the plant. You pay for the energy it delivers at a rate below your current tariff, with operation and maintenance included for the term.

How funded solar works

Capex: own the plant

Buy the plant outright and keep all the savings. Section 12B allows the cost of a solar plant to be deducted in the first year.

Compare funding models

Clients

“SolarXgen developed a 5MW solar solution for our mine's power requirement.”
Sewis Meiring, Commercial Manager, Stibium Mining SA
“SolarXgen have provided us with a dedicated deployment partner in the C&I space, delivering exceptional projects for our funded clients.”
Jonty Sacks
Director, Jaltech
“Our motor divisions at Toyota and Isuzu all generate clean renewable energy — developed by SolarXgen.”
Koos Byleveldt
General Manager, TWK Motors
“SolarXgen was professional & timeous in the construction of First Car Rental's solar system.”
Adelle Nel
HOD Executive, First Car Rental

Who we build for

What we do

Solar arrays at Stibium Mine at ground level, with the Limpopo hills behind

Send us a bill. We will show you the numbers.

Or email info@solarxgen.com