TERAWATT · solar · storage · software

Your power bill keeps climbing. We bring it down.

We read your bill and find what you are overpaying. We fix it with solar and batteries. Then our software tracks every rand you save. One South African team designs, builds and runs it all — for farms, mines, factories and commercial property.

HOME · 01 · This is a money decision

Your bill is not fixed. We bring it down.

Electricity goes up faster than inflation every year. Most of that bill has never been properly checked by anyone. We start by reading it and showing you where the money actually goes.

+12.74%Tariff increase · Apr 2025
~8.76%Eskom-direct · Apr 2026
#1Driver — above-inflation tariffs
30–75%Typical total bill cut · illustrative
Your bill is set by your worst 30 minutes of the month, on a tariff you probably didn't choose, with errors nobody checks. That's not a fixed cost. That's money you can claim back.
HOME · 02 · How it works

Find the overpay. Solve it. Prove the saving.

Every job runs the same three steps. Software finds the problem in your bill. Hardware fixes it on your site. Then the software proves the saving, rand by rand.

01 · Find Find
EnergyCloud

Upload one bill. Our AI checks every charge and finds where you're overpaying — in about 30 seconds, in plain rands.

02 · Solve Solve
SolarPeak

Solar makes your own power for less than the grid charges. Peak batteries cut the costly spikes in your usage. One team builds and runs both.

03 · Prove Prove
EnergyCloud

Every saving is tracked against your budget, and you get an alert if something looks wrong. A board-ready report lands every month — automatically.

HOME · 04 · Free, and no salesperson

Send one bill. See your saving.

This is the quickest way to start. Our software reads your bill, works out your tariff and shows where the money goes. Free, and nobody phones you unless you ask.

Drop a bill here
PDF or a phone photo. Whole bill or just the summary page. Any South African utility.
PDF · JPG · PNG · up to 10 MB
  • Free — no follow-up unless you ask.
  • POPIA-compliant — your bill is analysed here in South Africa, and our privacy notice says exactly where everything else goes.
  • Megaflex, NightSave, Miniflex, municipal — PDF, JPG or CSV.
  • You keep the report. If we're not the right fit, take it to whoever is.
HOME · 05 · Why Terawatt

We don’t hand you over. We run it.

Most providers sell you one product and pass the rest to someone else. We design it, build it, help you fund it and then run it. And we prove what it saved.

01

One team, end to end

We design, commission and operate. Accountability lives in one place — no vendor hand-offs, no finger-pointing on a live plant.

02

Any way you want to pay

Buy it outright, pay per unit of power, or rent. We work with all four major SA banks. You pick what fits your books.

03

We handle the red tape

We handle the registrations and sign-offs — Eskom, NERSA and your municipality — so you don't have to.

04

Proof, not promises

We track the savings we find and the savings we capture, in rands. Real ROI — not a dashboard of kilowatt-hours.

05

SA-native & credentialed

We live in South African tariffs every day — Eskom and municipal. NERSA-registered, B-BBEE Level 2, based in Durban.

06

Free, low-risk on-ramp

Start with a free bill audit, processed safely in South Africa. No follow-up unless you ask. You keep the report either way.

HOME · 06 · Proof

We audit the bill — not just the meter.

This example combines typical jobs, not one real customer.* It shows solar, batteries and a bill audit working together. Real per-site figures are shared under NDA.

Monthly bill · before vs after · illustrative BeforeAfter
Energy charge
−60%
Peak demand charge
−41%
Power bought at peak times
−38%
Network & fixed
−4%
Billing errors
recovered
Total monthly billR 3.20MR 1.46M
Where the saving comes from
S

Solar generation

Cheaper self-generated power erases most of the energy charge.

P

Peak shaving & demand right-sizing

The battery flattens the spikes that drive your peak-demand penalty.

C

Right tariff & cheaper hours

The right tariff, plus load moved out of the expensive window.

C

Recovered billing errors

Overcharges caught in the audit and disputed back.

30–75%Total bill cut
One teamDesign → operate
TrackedSaving to the rand
HOME · 07 · Start with one bill

Your bill, audited by AI. Your savings, tracked to the rand.

Send one recent bill and see your analysis in about 30 seconds — what you are overpaying, and what to do about it. Or talk to an engineer. We reply within one working day, no sales pitch.

Phone087 550 1531
WhatsApp+27 76 778 2434
Emailhello@terawatt.co.za
Based inDurban
Get your free report
Instant AI analysis · POPIA-compliant · Bill processed in ZA only
Instant AI analysis · free · POPIA-compliantUpload one bill — see your saving in plain Rands.
Upload a bill