The roof runs the home and refills the batteries.
Case study · Residential solar · Gauteng, South Africa
An electricity bill cut from R10,465 to R2,053 a month.
How a 21 kWp solar-and-storage system took a family home 92% off the grid, in the middle of winter.
R8,400/ US$525Saved every month
R101,000/ US$6,300Saved every year
R5.1m/ US$320kOver 25 years*
The pain point
Power costs without certainty
A family home in Gauteng was using about 2,600 kWh of electricity a month on a standard Eskom tariff. At today's rates that's R10,465 (US$654) a month — a cost that rises every year, with no say in it and very little certainty in return.
What we built
Solar built around the home
21,060 WpRooftop solar
15,000 WSolis hybrid inverter
48,960 WhGreenRich lithium battery storage
49 kWh of storage carries the evening peak and overnight load.
Back-up only: about 7 kWh a day, even in winter.
Before & after
The difference on the bill
Before solar
R10,465 (US$654)per month2,578 kWh bought from the grid per month
After solar
R2,053 (US$128)per month212 kWh bought from the grid per month
−92% energy bought from the grid
−80% on the monthly bill — what remains (about R1,300 / US$81) is mostly fixed daily grid charges
What the client now keeps
Energy that pays back every month
R8,400 (US$525)per month
R101,000 (US$6,300)per year
R5.1m (US$320k)projected over the 25-year asset life
R2.4m (US$150k) even if tariffs never rise again
About 28,400 kWh of grid electricity avoided every year.
What we can do for you
Built for your energy needs
South Africa
- Hybrid solar + storage that cuts utility bills
- Protection from tariff hikes and outages
- Homes, estates and SMEs — sized from your actual bills
Zimbabwe
- Reliable power where the grid can't keep up
- Own-use solar plants up to 10 MW need no generation licence (S.I. 126 of 2026 — plants 100 kW–10 MW register with ZERA)
- Net metering now pays for surplus exported at the end of each annual billing cycle (S.I. 127 of 2026)
BridgeFort Energy
Send us your last electricity bill. We'll show you what you could be keeping.
Before-and-after figures compare metered winter usage from the client's utility bills (June–July 2025 vs July–September 2026), both priced at current 2026 Eskom Homepower Standard tariffs including 15% VAT; monthly = 30.4 days. *25-year projection assumes 6% annual tariff escalation and 0.5% annual panel degradation, nominal rands, and excludes battery/inverter replacement and maintenance. US$ figures at R16 = US$1.