Technical FAQs 4

How to achieve higher CTM ratios in solar cells?

It should be noted that the extra optical gain resulting from the additional cell spacing in half-cell modules is not included in the simulation results. Higher CTM ratios can be achieved by using different technologies in module integration. Solar cell technology, as the most important part of module integration, can play a significant role.

What is cell-to-Module (CTM) power ratio?

The ratio of module power to cell power, multiplied by the number of cells integrated in the module, is defined as the cell-to-module (CTM) power ratio. This factor quantifies the general loss/gain percentage in a PV module , and its importance can be explained by means of an example.

How can cell and module design reduce CTM losses?

Innovative technologies, e.g. multi-wire and back-contact , take a combined approach in cell as well as module design to massively reduce CTM losses. Cell as well as module development increasingly considers optical and electrical interactions between cells and module materials.

Can a multi-crystalline solar module predict module power?

The validation of the presented methodology for predicting module power is done for a multi-crystalline 60 cell module with H-patterned solar cells with an initial cell efficiency of 14.85% after light soaking and mismatch calculation.

Photovoltaic Storage & BESS Technical Resources


Expert insights on photovoltaic energy storage systems, BESS solutions, mobile power containers, EMS management systems, commercial storage, industrial storage, containerized storage, and outdoor power generation for South African and African markets

What is the normal CTM of double-glass solar modules

Welcome to our technical resource page for What is the normal CTM of double-glass solar modules ! Here, we provide comprehensive information about photovoltaic energy storage systems, BESS solutions, mobile power containers, EMS management systems, commercial storage, industrial storage, containerized storage, and outdoor power generation. Our professional engineering solutions are designed for residential, commercial, industrial, and utility applications across South Africa and Africa.

We provide professional photovoltaic storage and BESS solutions to customers across South Africa, including Western Cape, Gauteng, KwaZulu-Natal, Eastern Cape, Free State, and neighboring African countries including Namibia, Botswana, Zimbabwe, Mozambique, Zambia, Tanzania, and Kenya.
Our expertise in photovoltaic energy storage systems, BESS solutions, mobile power containers, EMS management systems, commercial storage, industrial storage, and containerized storage ensures reliable performance for various applications. Whether you need residential photovoltaic storage, commercial BESS systems, industrial energy storage, mobile power containers, or utility-scale photovoltaic projects, WALMER ENERGY has the engineering expertise to deliver optimal results with competitive pricing and reliable technical support.

CTM 100+ – Improving Module Performance by Analysis of Cell-to-Module

The influence on module power of material properties can be assessed directly at the module level to produce glass, anti-reflective coatings, embedding films, cell connectors and backside

Cell-To-Module (CTM) Analysis for Photovoltaic Modules

Nov 10, 2020 · We analyze this concept for power and efficiency gains and losses from cell to module (CTM) and present models to calculate the CTM-ratio of such photovoltaic modules.

Cell-To-Module (CTM) Analysis for

Nov 10, 2020 · We analyze this concept for power and efficiency gains and losses from cell to module (CTM) and present models to calculate the

151020_APSRC_PAPER_Haedrich_CTM_cell_types

Dec 21, 2015 · Abstract Embedding solar cells into a solar module has an impact on the amount of light which can be absorbed by the solar cell. In a first matter it generates optical losses by

Unlocking Solar Efficiency: Understanding CTM Ratio in Solar

May 6, 2025 · In today''s competitive solar market, understanding the technical details behind panel efficiency can help you make smarter investments. One crucial factor that often goes

Unified methodology for determining CTM ratios: Systematic prediction

Dec 1, 2014 · Average efficiencies of PV modules newly introduced into the market in 2014 amount to 16.4% for monocrystalline and 15.3% for multicrystalline technology [1]. While

Unlocking Solar Efficiency: Understanding

May 6, 2025 · In today''s competitive solar market, understanding the technical details behind panel efficiency can help you make smarter

Investigation of cell-to-module (CTM) ratios of PV modules by

Oct 27, 2016 · The output power of a solar module is the sum of the powers of all the individual cells in the module multiplied by the cell-to-module (CTM) power ratio. The CTM ratio is

Cell to module (CTM) losses

Dec 5, 2025 · The encapsulation of solar cells into a photovoltaic module introduces some optical loss mechanisms as shown schematically in Figure 1. Typically, the output power of the

CTM 100+ – Improving Module Performance

The influence on module power of material properties can be assessed directly at the module level to produce glass, anti-reflective coatings,

Investigation of cell-to-module (CTM) ratios

Oct 27, 2016 · The output power of a solar module is the sum of the powers of all the individual cells in the module multiplied by the cell-to-module

Cell to module (CTM) losses

Dec 5, 2025 · The encapsulation of solar cells into a photovoltaic module introduces some optical loss mechanisms as shown schematically in

Study on the cell-to-module encapsulation losses of back-contact solar

Feb 26, 2025 · By comparing the factors influencing CTM losses in bifacial and back-contact cell modules, the study reveals variations in compatibility between crystalline silicon solar cells and

Comprehensive analysis and modeling of cell to module (CTM

Jun 1, 2016 · Cell to module (CTM) conversion loss, during Solar Photovoltaic (SPV) module manufacturing, in terms of wattage losses, at critical process steps Tabbing and Stringing

Investigation of cell-to-module (CTM) ratios of PV

May 21, 2024 · Investigation of cell-to-module (CTM) ratios of PV modules by analysis of loss and gain mechanisms Hamed Hanifi1,2, Charlotte Pfau1, David Dassler1,2, Sebastian Schindler1,

WALMER ENERGY Engineering Support Team

Engineering Support for Photovoltaic Storage & BESS Projects

Our certified engineering team provides comprehensive technical support for all installed photovoltaic storage and BESS systems. From initial system design and engineering to ongoing maintenance, optimization, and performance monitoring, WALMER ENERGY ensures your photovoltaic storage and BESS solutions operate at peak efficiency throughout their lifecycle, with 24/7 monitoring available for critical industrial and commercial applications.

Contact Engineering Support

Stay Updated on Photovoltaic Storage & BESS Technology

Subscribe to our technical newsletter for the latest innovations in photovoltaic energy storage systems, BESS solutions, mobile power containers, lithium batteries, EMS management systems, and industry developments across Africa. Stay informed about cutting-edge solutions in renewable energy technology.