---
title: "Fellow Energy vs A.B. Energy - Brand Comparison | ComparePV"
description: "Compare Fellow Energy vs A.B. Energy solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/fellow-energy-vs-a-b-energy"
---

# Fellow Energy vs A.B. Energy

Fellow Energy has the broader catalog (13 vs 0 models). Fellow Energy leans bifacial (54% of lineup).


## The two companies


| Attribute | Fellow Energy | A.B. Energy |
| --- | --- | --- |
| Country | Türkiye | Germany |
| Headquarters | Gaziantep | Wiesbaden |
| Founded | 2020 | 1996 |
| Employees | 350+ | 1,400 |
| Annual capacity |  |  |
| Tier 1 | yes |  |
| Listed |  | Xetra, Frankfurt Stock Exchange: AB9 |
| Website | [https://www.fellowsolarenergy.com](https://www.fellowsolarenergy.com) | [https://abo-energy.com](https://abo-energy.com) |

Fellow Energy is a solar energy technology manufacturer founded in 2020 in Gaziantep, Türkiye. The company specializes in the research, development, manufacturing, and sales of photovoltaic modules and solar cells, all of which are fully designed and produced domestically. Fellow Energy is recognized as a Tier 1 solar...

ABO Energy is a renewable energy company that develops and constructs renewable energy projects, focusing on wind, solar, and storage facilities. They offer turnkey solutions and have connected several gigawatts of nominal output to the grid. The company is active internationally and is committed to driving the energy...


## Catalog & Power


| Measure | Fellow Energy | A.B. Energy | Margin |
| --- | --- | --- | --- |
| Panel Models | 13 | 0 | +13 |
| Max Power | 590 W | 0 W | +590 W |
| Avg Power | 491 W | 0 W | +491 W |


## Efficiency


| Measure | Fellow Energy | A.B. Energy | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 22.90% | - |  |
| Avg Efficiency | 21.60% | - |  |


## Reliability & Warranty


| Measure | Fellow Energy | A.B. Energy | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.320%/°C | - |  |
| Bifacial Share | 7 (54%) | 0 (0%) | +54 pp |
| Avg Warranty | 27.3 yrs | - |  |


## Efficiency distribution


| Efficiency band | Fellow Energy | A.B. Energy |
| --- | --- | --- |
| 20-21% | 1 (7.7%) | 0 |
| 21-22% | 10 (76.9%) | 0 |
| 22-23% | 2 (15.4%) | 0 |


## Power distribution


| Power band | Fellow Energy | A.B. Energy |
| --- | --- | --- |
| 400-499W | 6 (46.2%) | 0 |
| 500-599W | 7 (53.8%) | 0 |


## Cell technology

Dominant cell tech: **TOPCon** (54%)


| Technology | Fellow Energy | A.B. Energy |
| --- | --- | --- |
| TOPCon | 7 (53.8%) | 0 |
| PERC | 6 (46.2%) | 0 |


## Top panels, Fellow Energy


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [FE72-18X(ND)](https://comparepv.com/panel/fellow-energy-fe72-18x-nd) | 590 | 22.9 | -0.310 | Monocrystalline |
| 2 | [FE72-18X 560W](https://comparepv.com/panel/fellow-energy-fe72-18x-560w) | 560 | 21.7 | -0.326 | Monocrystalline |
| 3 | [FE72-18X 555W](https://comparepv.com/panel/fellow-energy-fe72-18x-555w) | 555 | 21.5 | -0.326 | Monocrystalline |
| 4 | [FE72-18X 550W](https://comparepv.com/panel/fellow-energy-fe72-18x-550w) | 550 | 21.3 | -0.326 | Monocrystalline |
| 5 | [FE72-18X 545W](https://comparepv.com/panel/fellow-energy-fe72-18x-545w) | 545 | 21.1 | -0.326 | Monocrystalline |
| 6 | [FE72-18X 540W](https://comparepv.com/panel/fellow-energy-fe72-18x-540w) | 540 | 20.9 | -0.326 | Monocrystalline |
| 7 | [FE66-18X](https://comparepv.com/panel/fellow-energy-fe66-18x) | 500 | 21.1 | -0.350 | Monocrystalline |
| 8 | [FE54-18X(N)-435W](https://comparepv.com/panel/fellow-energy-fe54-18x-n-435w) | 435 | 22.3 | -0.310 | Monocrystalline |
| 9 | [FE54-18X(N)-430W](https://comparepv.com/panel/fellow-energy-fe54-18x-n-430w) | 430 | 22.0 | -0.310 | Monocrystalline |
| 10 | [FE54-18X(N)-425W](https://comparepv.com/panel/fellow-energy-fe54-18x-n-425w) | 425 | 21.7 | -0.310 | Monocrystalline |


## Summary

Fellow Energy, founded in 2020 and headquartered in Türkiye, is among the newer entrants to utility-grade solar manufacturing, yet it has built a credible institutional footprint in a short time: it holds Tier 1 bankable status under BloombergNEF's module-tiering methodology and operates roughly 2.1 GW of cell-to-module production capacity across three factories, making it one of the first Turkish producers to run a fully integrated line from wafer slicing through cell processing. With a reported workforce of more than 350, it is a focused, growth-stage manufacturer. A.B. Energy, by contrast, was founded in 1996 in Germany and employs approximately 1,400 people - nearly four times the headcount - and carries the added institutional weight of being publicly listed on both the Xetra electronic platform and the Frankfurt Stock Exchange. Three decades of operating history in Europe's most regulated solar market, combined with audited public financials, give it a longer and more transparent track record, though independent Tier 1 bankability confirmation for A.B. Energy was not found in available current sources.

Panel-level portfolio data - peak wattage, cell efficiency, and bifacial share - was not available for either manufacturer at the time of this analysis, which limits a direct technical comparison of their lineups. Fellow Energy's vertically integrated Turkish supply chain positions it competitively for cost-sensitive utility-scale and large commercial projects across Europe, the Middle East, and Africa, markets where Turkish-origin modules have gained significant share since 2022. A.B. Energy's German heritage and exchange listing suggest a buyer base that prioritizes long-term corporate accountability - criteria common in large European EPC contracts and project-financed ground-mount portfolios where lenders scrutinize counterparty risk closely.

For a typical buyer in 2025, the decision comes down to institutional preference more than panel-level performance. Developers and lenders requiring a publicly traded company with nearly 30 years of history will find A.B. Energy easier to underwrite. Buyers seeking a Tier 1 bankable module from a fast-scaling manufacturer with integrated Turkish supply-chain economics - and who can accept a shorter corporate track record - will find Fellow Energy a credible alternative. Neither brand can be declared a technical winner without published wattage and efficiency figures; the differentiator here is supply-chain strategy and risk appetite, not raw output.

\---LINKS---

\- https://comparepv.com/reviews/fellow-energy \| Fellow Energy Solar Panels Review 2026 - ComparePV \| review

\- https://assets.bnef.com/public/tiering/solarmodules.pdf \| BloombergNEF Tier 1 Solar Module Methodology March 2026 \| article

\- https://www.solarbeglobal.com/turkiye-a-new-star-as-solar-manufacturer/ \| Turkiye - a rising star as solar manufacturer - Solarbe Global \| article

\- https://www.cleanenergywire.org/factsheets/solar-power-germany-output-business-perspectives \| Solar power in Germany - output, business and perspectives - CLEW \| article

Sources:

\- \[Fellow Energy Solar Panels Review 2026 - ComparePV\](https://comparepv.com/reviews/fellow-energy)

\- \[BloombergNEF Tier 1 Solar Module Methodology\](https://assets.bnef.com/public/tiering/solarmodules.pdf)

\- \[Turkiye - a rising star as solar manufacturer - Solarbe Global\](https://www.solarbeglobal.com/turkiye-a-new-star-as-solar-manufacturer/)

\- \[Solar power in Germany - Clean Energy Wire\](https://www.cleanenergywire.org/factsheets/solar-power-germany-output-business-perspectives)

Written by claude-sonnet from the figures above.


## Other comparisons

- [Fellow Energy vs AE Solar](https://comparepv.com/fellow-energy-vs-ae-solar)
- [AEET vs A.B. Energy](https://comparepv.com/aeet-vs-a-b-energy)
- [Fellow Energy vs AIKO](https://comparepv.com/fellow-energy-vs-aiko)
- [AKCOME vs A.B. Energy](https://comparepv.com/akcome-vs-a-b-energy)
- [Fellow Energy vs ARTsolar](https://comparepv.com/fellow-energy-vs-artsolar)
- [ASM vs A.B. Energy](https://comparepv.com/asm-vs-a-b-energy)


---

Source: https://comparepv.com/fellow-energy-vs-a-b-energy

Not in this file, on the page: the distributions above drawn as charts.