SP Group Raises Q3 2026 Tariff 4.2%: What Your Bill Now Costs

SP Group's regulated electricity tariff for Q3 2026 is S$0.309 per kWh, up from S$0.297 in Q2. For a terrace house sitting on the fence about solar, this is the number that changes the calculation. By the end of this, you will see exactly how — and the answer is not what most people expect.

What SP Group Announced

The 4.2% increase reflects higher natural gas costs and grid maintenance charges passed through to non-contestable consumers. It takes effect 1 July 2026 and applies to all residential accounts on the regulated tariff. The Energy Market Authority confirmed the rate on their website before the quarter opened.

The previous rate was S$0.297 per kWh. The new rate is S$0.309. That S$0.012 difference does not sound like much. Across a year of electricity consumption, it adds up fast.

What the Grid Now Costs You

A terrace house in Singapore drawing 1,500 kWh per month from the grid — a typical figure for a family of four with air conditioning — now pays S$463.50 per month instead of S$445.50. That is S$216 more per year, sent to SP Group for doing nothing different. Solar owners who installed before Q3 started are already on the right side of this number. Their panels generate at zero marginal cost. Every rate increase after their install date is free money, not a bill.

Note: the Solar Capacity Tariff (SCT) export credit rate is set separately from the regulated tariff and has not yet been confirmed for Q3 2026. It has historically tracked at approximately 75% of the regulated rate. Confirm the exact SCT rate with your installer or at the EMA website once published.

Your Numbers at the New Rate

Over 10 years, a 15kWp terrace house system now avoids approximately S$13,900 in grid electricity at the Q3 tariff, compared to S$13,300 at the Q2 rate. That shortens the payback from 5.6 years to 5.4 years without any change to your system, your roof, or your usage. Run your estimate at the new tariff rate to see the exact figure for your property and monthly bill.

The math: a 15kWp system generates approximately 18,000 kWh per year in Singapore. With 25% self-consumed at the full grid rate (S$0.309) and 75% exported at the SCT rate (approximately S$0.232), annual savings land around S$2,570. System cost at current installer quotes runs S$15,000 to S$18,000 — a payback of 5.4 to 6.0 years, followed by 19 to 20 years of near-zero generation cost.

What This Means for Your Home

Here is what the tariff increase actually changes: it moves the payback from borderline to clearly favourable for homes that were right on the edge. If you ran an estimate last quarter and the numbers felt close, run it again. A 4.2% tariff increase is the equivalent of your panels producing 4.2% more value overnight, for free.

Singapore's electricity tariff has risen in eight of the last ten quarters. Each increase that arrives after your install date adds to your savings. Each one that arrives before your install date is a permanent cost you absorb that solar owners do not. That gap does not close when you eventually install — it just stops growing. When you are ready to see the full picture, the solar ROI breakdown walks through every variable at the current tariff.