Solar First Group Georgia 23.8MWp Solar Farm: Reliable Mounting in Humid Heat

Solar First Group has successfully delivered a 23.8MWp photovoltaic mounting system for a solar farm in Georgia, a region with humid and hot climate (annual precipitation 500‑650 mm, average temperature ~24°C). The solution ensures long‑term corrosion resistance and structural stability under flat terrain conditions.

Key Challenges

▪ Material durability: High atmospheric moisture accelerates corrosion of metal mounts. Conventional coatings risk edge corrosion and failure.

▪ Foundation construction: Hard soil conditions make traditional foundations difficult and costly.

Customized Solution

▪ High corrosion‑resistant MAC material (coating weight 350g/m²):

• • Passed 4,000‑hour neutral salt spray test – no red rust, far exceeding traditional galvanized materials.
  • Self‑repairing cut edges – a dense protective film forms automatically.
  • Meets 25‑year service life requirements.

▪ C‑type bored cast‑in‑place pile foundation for hard soil:

• • Integrated pile‑column design with adjustable elevation – no large‑scale site leveling.
  • Minimal excavation preserves original vegetation.
  • High construction precision and cost‑effective compared to independent foundations.

Results

▪ The 23.8 MW plant was completed and commissioned in 2025, operating stably.

▪ Remarkable ecological benefits: Pile‑column design and minimal earthwork preserved topography and vegetation.

▪ Demonstration value: The integrated “highly corrosion‑resistant materials + pile‑column foundations” provides a replicable model for similar hot‑humid and hard‑soil conditions worldwide.