{"id":7945,"date":"2026-07-24T11:44:52","date_gmt":"2026-07-24T08:44:52","guid":{"rendered":"https:\/\/axinar.com\/?p=7945"},"modified":"2026-07-24T11:44:52","modified_gmt":"2026-07-24T08:44:52","slug":"bifacial-pv-ground-mount-terrasol","status":"publish","type":"post","link":"https:\/\/axinar.com\/en\/blog\/bifacial-pv-ground-mount-terrasol","title":{"rendered":"Bifacial PV in Ground Mount: Extra Production with Terrasol"},"content":{"rendered":"

Bifacial PV<\/strong> panels produce energy from both sides, front from direct sunlight and back from ground reflection. In the right setup, this translates to 10\u201325% extra annual production<\/strong> without extra space. In the wrong setup, the difference is negligible. What’s critical is HOW they’re installed, not just buying a bifacial panel.<\/p>\n

How Bifacial Panels Work<\/h2>\n

A common monofacial panel has an opaque backsheet. The bifacial has a transparent back surface (glass or polymer) and photovoltaic cells that work on both sides<\/strong>. The front side produces the bulk of energy (~90% of total). The back side adds extra 10\u201325%<\/strong>, depending on conditions.<\/p>\n

Bifacial Gain Factors<\/h2>\n

1. Ground Reflectivity (Albedo)<\/h3>\n\n\n\n\n\n\n\n\n\n
Ground Type<\/th>\nAlbedo<\/th>\nBifacial Gain<\/th>\n<\/tr>\n<\/thead>\n
Fresh snow<\/td>\n0.70\u20130.90<\/td>\n25\u201330%<\/td>\n<\/tr>\n
White gravel \/ granite<\/td>\n0.40\u20130.60<\/td>\n15\u201322%<\/td>\n<\/tr>\n
Sand \/ light ground<\/td>\n0.25\u20130.40<\/td>\n10\u201315%<\/td>\n<\/tr>\n
Grass<\/td>\n0.15\u20130.25<\/td>\n6\u201310%<\/td>\n<\/tr>\n
Asphalt \/ dark<\/td>\n0.05\u20130.15<\/td>\n3\u20136%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2. Height Above Ground<\/h3>\n

The greater the height, the more reflection reaches both sides. Ideal height: 0.8\u20131.5m from ground<\/strong> for ground mount, or above roofs with ballast (~30\u201350cm).<\/p>\n

3. Tilt Angle<\/h3>\n

A lower<\/em> tilt (15\u201325\u00b0) allows more reflected radiation to reach the back side. Matches East-West and ground mount systems.<\/p>\n

4. No Shading from Structural Elements<\/h3>\n

Beams, piles and rails must be as far back and thin as possible, so as not to shade the back side.<\/p>\n

Ideal Installations for Bifacial<\/h2>\n