Food Manufacturing Runs on Tight Margins — and Rising Energy Costs
Food manufacturing is one of the most energy-intensive commercial sectors. Between production equipment, refrigeration, packaging lines, and general facility operations, electricity is a major input cost — and one that's been rising faster than food prices.
Specific pain points:
- Electricity costs consuming an increasing share of production margins
- Daytime production shifts coinciding with peak tariff periods
- Eskom tariff increases outpacing the ability to raise product prices
- Need for a cost-effective solution that wouldn't disrupt production
Grid-Tie Solar — Matched to Production Hours
Gentricity designed a grid-tie system that directly aligned with Choice Foods' daytime production schedule:
System specifications:
- 64.3kWp solar panel array optimised for production-hours generation
- Grid-tie configuration — no batteries (grid provides backup)
- Inverter system sized for maximum daytime offset
- Real-time monitoring tracking production and consumption alignment
Why grid-tie was the right choice:
- Production runs primarily during daylight hours — perfectly matching solar generation
- No critical need for battery backup (existing generator handles outages)
- Lowest cost per kWp means maximum return for the investment
- Simple, reliable system with minimal maintenance requirements
Results (Estimated based on system specifications and industry benchmarks)
| Metric | Estimated Value |
|---|---|
| Electricity cost reduction | 45-55% of daytime consumption |
| Estimated annual savings | R120,000 - R160,000 |
| Payback period | 3-4 years (before Section 12B benefit) |
| System maintenance | ~R9,000/year (1% of system cost) |
| Carbon offset | Estimated 80-100 tonnes CO2/year |
Note: Figures are estimates based on system size and SA commercial solar benchmarks.
What This Project Demonstrates
For food manufacturing and production facilities:
- Grid-tie is the most cost-effective option when production hours match solar hours
- Even mid-range systems (50-70kWp) deliver meaningful savings for manufacturing operations
- The simplicity of grid-tie means minimal disruption and minimal ongoing maintenance
- Section 12B tax benefits further accelerate the already strong ROI
Relevant solutions: