⚡ Free Electricity Calculator

City of Matlosana (Unofficial)

Electricity Cost Estimator — for reference purposes only

📅 10 days until the monthly tariff resets on the 1st.

💡 How Electricity Tariffs Work

📅
Resets Every Month
Your usage counter resets to zero on the 1st of every month. It doesn't matter how much you bought last month — you always start fresh at Block 1.
📈
More = More Expensive
The more electricity you buy in a month, the higher the rate per unit. Block 1 is cheapest. As your monthly total grows, you move into more expensive blocks.
🛒
Each Purchase Advances Your Meter
Buying in small amounts doesn't save money — what matters is your running total for the month. 3 × 50 units costs the same as 1 × 150 units.
Example (Domestic): You buy 50 units on the 1st → Block 1 rate (cheapest). Two days later you buy another 50 units → Block 2 rate (your total is now 100 units). Buy 300 more → that purchase spans Block 2 and Block 3. By end of month at 600+ units, you're paying Block 4 rates.
👉 This calculator tracks your monthly total so you always know the correct price.
📅 Tariff Year
✅ Rates effective July 2025/2026
1 Choose Your Tariff Type
2 Your Purchases This Month

Add every electricity purchase you've made this month — oldest first. Enter either the rand amount or units (kWh) for each. The calculator will automatically place each purchase in the correct block.

3 Calculate Next Purchase (optional — or just calculate Step 2 totals)

Want to buy more electricity? Enter either the amount you plan to spend or the units you want — we'll calculate the correct price based on where your monthly meter currently sits.

OR
Tariff Rates — DOMESTIC July 2025/2026
BlockFrom (kWh)To (kWh)Rate (R/kWh)
Block 1 1 50 R 1.9421
Block 2 51 350 R 2.4828
Block 3 351 600 R 3.3386
Block 4 601 1500 R 3.8349
Block 5 1501 No limit R 4.0376
ℹ️ Important Notes
How to Buy Electricity
  1. Register at www.electricity.co.za using your meter number.
  2. Add Electricity.co.za as a beneficiary in your banking app — use your meter number as the payment reference.
  3. When you need electricity, do an EFT or "Pay Beneficiary", select Electricity.co.za from your list, and enter the amount. Your token will arrive by SMS or email within a few minutes.

Purchase electricity online via www.isumonline.co.za. Have your meter number ready when purchasing.

Visit any City of Matlosana municipal service point in person to purchase electricity. Bring your meter number and payment.

Electricity tokens are available at most petrol stations, supermarkets, and spaza shops.

⚠️ Always have your meter number on hand when purchasing — the token is generated specifically for your meter and cannot be transferred.

Frequently Asked Questions
🏠 Domestic
Standard residential prepaid customers. The most common tariff for households.
🤝 Indigent
Low-income households registered on the municipal indigent support programme. Includes 50 free kWh on the first purchase of each month.
🏢 Business
Commercial and business premises. Rates are structured differently from residential customers.
🏘️ Bulk Domestic
Typically applies to multi-unit residential complexes or estate accounts purchasing on behalf of multiple households.

Full tariff details are available at the City of Matlosana municipal offices or customer service centres.

Electricity is priced on a rising block tariff. Your monthly usage accumulates across all purchases, and as your total crosses into a higher block, a higher rate applies to any units in that block.

This resets to zero on the 1st of every calendar month, regardless of when you last purchased. Buying in smaller amounts throughout the month does not reduce your rate — only your cumulative total determines which block you are in.

Municipal electricity tariffs are reviewed and updated annually, with new rates taking effect on 1 July each year, subject to approval by the National Energy Regulator of South Africa (NERSA).

This calculator will be updated to reflect new tariffs once officially published. Use the tariff year selector at the top of the page to compare rates across years once available.

Your meter number (also called a Supply Group Code / SGC or AMRID) is printed on your electricity meter box, usually on a label on the front or inside the door.

It may also appear on previous electricity token receipts or on your municipal account statement. If you cannot locate it, contact the City of Matlosana customer service centre for assistance.

If a valid token is rejected by your meter, try the following:

  1. Confirm you are entering the token on the correct meter (meter numbers must match exactly).
  2. Check that you haven't entered any digits incorrectly — tokens are typically 20 digits long.
  3. If the meter shows "TAMPER" or an error code, contact the City of Matlosana technical support.
  4. If purchased online, contact the vendor (Electricity.co.za or iSum) directly with your proof of payment.