Electricity Tariffs Are Rising Again, What This Means for Solar ROI in 2026

Date:

South Africa's energy conversation shifted again this month after the National Energy Regulator (NERSA) confirmed that Eskom will be allowed to increase electricity charges more than previously approved.

For many businesses and households, this is more than just another headline. It directly impacts electricity budgets, operational planning, and long-term energy decisions.

The question clients are already asking is simple:

"Does this make solar more worthwhile?"

Short answer, yes, and here's why.

1. What exactly changed?

NERSA revised Eskom's upcoming tariff increases after recalculating earlier pricing determinations.

The new approved increases are:

  • +8.76% from April 2026
  • +8.83% from April 2027

These are higher than the previously approved increases of 5.36% and 6.19%.

This means electricity costs will rise faster than many customers had planned for.

2. Why this matters for ROI (Return on Investment)

For small commercial users and residential customers, grid electricity is often the single largest monthly operating cost.

When tariffs rise:

  • Savings from solar systems increase automatically
  • Payback periods shorten
  • Energy independence becomes more predictable

In simple terms:

Every tariff increase improves the financial case for Solar PV.

A system designed two years ago might now deliver ROI faster than originally projected, purely because grid electricity costs are rising.

3. The mindset shift, Solar is not just backup anymore

The market has changed.

During the peak load-shedding years, most customers installed solar for security. Today, the conversation is shifting toward:

  • Cost stability
  • Long-term savings
  • Energy strategy

Tariff uncertainty reinforces this shift.

Instead of asking "Can I survive outages?", customers are now asking:

“How do I protect my business from energy inflation?”

4. If upfront costs feel high, funding bridges the gap

One of the biggest misconceptions is that solar requires full cash investment.

In reality, options such as:

  • Structured financing
  • Asset-based funding
  • Energy savings-linked repayment models

allow businesses to install systems where monthly repayments are similar to, or lower than, their rising electricity bills.

This means businesses can redirect future Eskom spend into owning an asset.

5. Small users stand to benefit most

For smaller users especially:

  • ROI sensitivity is high
  • Tariff increases hit harder
  • Even modest systems create noticeable savings

The barrier to entry has also reduced in recent years, making adoption easier for qualifying residential and small commercial systems. 

6. The real takeaway

This isn't about fear or reacting to headlines.

It's about understanding the direction of the energy market.

Electricity pricing is becoming less predictable, while solar technology and financing models are becoming more accessible.

For customers, that means:

  • Better ROI
  • Greater cost control
  • Stronger long-term planning

Final thought

The conversation around solar has matured.

It is no longer just an alternative energy source; it is becoming a financial strategy.

As tariffs evolve, businesses that understand their energy costs today will make smarter decisions for tomorrow.