Bifacial vs monofacial panels
Decisions built from Bifacial and Monofacial — editorial analysis, no sales stake; each figure sourced or labeled in review.
Bifacial panels capture light from behind the panel. On a raised, light-colored ground mount that add 5-15%; on a dark rooftop tilted against a deck, the backlight is mostly absent — chasing it with racking money is for the brochures.
At a glance: Bifacial vs Monofacial
| Bifacial | Monofacial | |
|---|---|---|
| Back capture | Reflected light (ground/white) | None — opaque back |
| Ground-mount gain | 5-15% typical (in review) | Baseline |
| Roof gain | Tiny (back is dark/deck) | Baseline |
| Price | Same-ish to higher (in review) | Market |
When Bifacial wins
- Ground mounts over light soil/snow, with suitable racking — the extra percent is real all year.
- Anywhere the backside sees light for daylight hours.
When Monofacial wins
- Roofs: the dark deck absorbs your reflected light — the gain becomes marketing.
- Simplicity and often price: one glass, one face, one module to warrant (in review).
The honest verdict
Panel face is a spec, not a personality — if your roof is tilted and dark, monofacial is the honest default; a ground mount with white rocks is the case bifacial was made for. Never accept a quote that builds the differential into premium without your own math.
Where these figures come from
Federal credit rules from the IRS (accessed 2026-08-08); market prices from EnergySage 2026; export rates per state records cited on each state page (CPUC NEM 3 for California); typical-home usage EIA 2023. Anything verified carries its date; the rest says "in review" until confirmed.