Why solar for farmers is about profit, not only pumps

For many farmers, the real challenge isn’t just rising input costs – it’s the creeping energy costs and the uncertainties related to it that no one is talking about.

Power outages. Fixed charges. Surprise bills. A tariff structure that changes like the weather. And underlying it all, a growing sense of frustration: “Why don’t I have control over my energy?”

As the cost of farming keeps climbing, more producers are looking beyond diesel and utility provided power, and beginning to ask whether solar could offer not just relief, but long-term resilience.

The real energy challenges on South African farms

Whether you’re managing cold storage, irrigation pivots or processing operations, you already know that energy costs are no longer predictable.

Across the country, farmers are facing:

Above-inflation electricity price hikes (the average increase is between 10-12%)
Long delays during outages and maintenance
Monthly bills with inconsistent or estimated readings
High fixed charges tied to oversized transformers
Complex tariff structures (like Ruraflex) that are hard to understand

In an industry where margins are tight and seasons are critical, this kind of volatility isn’t just frustrating — it’s operationally risky.

Is solar power a practical solution for agriculture?

Short answer: it depends on the situation and how it’s done

Solar PV alone isn’t a silver bullet — but when combined with the right tariff strategy, load profile, demand management, and funding model, it can significantly reduce both cost and risk.

Here’s what’s working for farmers right now:

Grid-tied solar for daytime operations

Farming is seasonal, and during planting season, irrigation could often run 24 hours a day for a few days on end. Processing and cold storage are often also 24/7 (e.g. in the case of a dairy). Solar PV could provide a significant offset in grid electricity consumption during daytime operation without the need for batteries.

In certain case excess energy can be stored in things such as ice banks which can be used to cool produce instead of drawing power to run compressors during peak time of use slots.

Typical daytime offset: 30-40% of usage

Payback period (if purchased outright): 3–5 years

Alternative: Zero-capex PPAs for no upfront investment

“Energy Banking” with Ruraflex Tariffs

Farms on Eskom’s Ruraflex Gen tariff can bank excess solar energy exported to the grid — and draw on those credits later, within time-of-use windows (Peak, Standard and Off-Peak).

It’s especially useful for seasonal irrigation setups:

Bank energy in the off-season
Use credits during peak season pumping

Pro tip: Credits expire annually in March. Smart sizing and modelling are essential to avoid losses.

Reducing fixed charges through smarter equipment

Many farmers overpay on Notified Maximum Demand (NMD) charges because of high startup surges from pump motors.

By installing soft starters or variable speed drives (VSDs), those spikes can be smoothed — allowing a lower transformer size and reduced fixed charges.

Example savings:

Reduce from 315 kVA to 100 kVA → Save ±R140,000/year
Reduce from 100 kVA to 25 kVA → Save ±R50,000/year

Going Further: Consolidation + Microgrids

Farms with multiple delivery Points of Distribution (PODs) across several ERFs are hit with separate fixed charges at each meter.

Our team are currently helping a growing number of Agri businesses explore:

POD consolidation
Private MV reticulation
Embedded generation + battery storage
Off-grid-ready microgrid design

While this is more complex, it’s helps future-proof your farm — especially as grid reliability worsens and more farms seek energy independence. Though, the correct sizing and implementation of a solution is critical.

Why many farmers are still hesitant and what’s changing

It’s no secret that many farmers are still cautious about solar. Here’s what we’ve heard directly from them:

“We’ve been burned by salesmen before.”
“I don’t understand how solar and the grid work together.”
“I don’t have the capital for this right now.”
“Other farmers say the savings aren’t that great.””
“I’ve heard that it is too high of a cost and hassle to convert to time-of-use.”

And the truth is, some of those concerns are valid.

But when solutions are engineered properly, the results speak for themselves.

Real Example: Citrus & Tea Farm Case Study

Energy Usage: 607,527 kWh/year

Old setup: 8 PODs across 3 ERFs

Tariff: Eskom Landrate (fixed + active charges)

New solution:

Consolidated to 3 PODs
200 kWp solar PV system
Private 3.3 kV MV reticulation
20-year PPA at fixed escalation

Result:

Annual energy savings of R324,848
4% lower electricity costs
54% of power replaced by solar

What to do if you’re exploring solar in 2025/2026

Whether you’re ready to act or just exploring, here’s how to move forward:

Review your latest electricity bill
Check your current tariff (Landrate, Ruraflex, etc.)
Understand your fixed vs variable charges
Consider your seasonal energy needs
Talk to a provider that understands both energy and agriculture — not just panels