EV Charging Cost: Home vs Public SPKLU in Indonesia
One of the biggest questions for electric vehicle (battery electric vehicle / BEV) owners in Indonesia is: is it cheaper to charge at home or at a public SPKLU station? The answer is almost always at home — but how big is the gap, and when does public DC fast charging still make sense? This guide compares the two using figures derived from official electricity tariffs and the battery capacity of a common EV on the market.
Why is home charging cheaper?
The cost difference between home charging and SPKLU charging starts with the electricity tariff applied. Home charging uses the PLN residential tariff, while SPKLU stations charge a higher public DC fast-charging rate per kWh — because it covers charger infrastructure, high power delivery, and operator margin. For the same amount of energy, the per-kWh cost at an SPKLU can be well above the home rate.
The table below compares the cost and time to charge a common EV from 20% to 80% — the most realistic everyday charging range — both at home using an AC charger and at an SPKLU using DC fast charging. All figures are computed automatically from the electricity tariffs and the car's specifications; no price is written by hand.
| Scenario | Energy | Time | Cost |
|---|---|---|---|
| At home (AC) 20% → 80% | 18 kWh | 2 hours 44 minutes | Rp 30.673,12 |
| Public DC 20% → 80% | 18 kWh | 36 minutes | Rp 44.506,37 |
When does each option make sense?
Home charging is ideal for routine top-ups: plug in overnight, wake up to a full battery, and pay the cheapest residential rate. The trade-off is time — an onboard AC charger is far slower than DC, so a 20% to 80% charge can take several hours. That is not a problem when the car is parked overnight anyway.
An SPKLU with DC fast charging makes sense on a long trip or when you need a quick top-up before continuing your route — you pay more per kWh in exchange for speed. For everyday city driving, relying on an SPKLU daily would be far more expensive than charging at home. The most economical strategy for most BEV owners in Indonesia: make home your primary charging source, and use an SPKLU only when you genuinely need to.
Want to calculate for your own car and tariff? Use the charging cost calculator to enter your model, battery percentage, and electricity rate — or see a per-car page such as the BYD Atto 1 Dynamic for a ready-made estimate. New to SPKLU and want to know what it is, its connector types, and how to use one? Read the "What is SPKLU and how to use it" guide. Curious where these figures come from? The "How charging cost is calculated" guide explains the full formula and the official electricity-tariff sources behind them.
Frequently asked questions
Is it cheaper to charge an EV at home or at an SPKLU?
- It is almost always cheaper at home. To charge from 20% to 80%, home charging at the residential tariff costs about Rp 30.673,12, while an SPKLU with DC fast charging costs about Rp 44.506,37 — because the public DC rate per kWh is higher.
How big is the cost difference between home and SPKLU charging?
- In the example above, charging from 20% to 80% costs about Rp 30.673,12 at home and about Rp 44.506,37 at an SPKLU. The difference comes from the per-kWh rate: the PLN residential tariff is lower than the public DC fast-charging rate in Indonesia.
Why is SPKLU charging faster than home charging?
- An SPKLU uses high-power DC fast charging, so a 20% to 80% charge at an SPKLU takes about 36 minutes. At home you use a much lower-power onboard AC charger, so the same charge takes about 2 hours 44 minutes. You trade speed for cost: an SPKLU is faster but more expensive per kWh.