• Tuesday, November 11, 2025
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  • GC Solar: 17,95 GW
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  • GC Solar: 17,95 GW
  • GD Solar: 41,3 GW
  • TOPCon Modules: $0,088/W
  • P-Type Cells: $0,034/W
  • N-Type Cells: $0,032/W
  • HJT Modules: $0,10/W
  • N-Type Wafer: US$0,128/pc
  • Polysilicon: US$ 19,00/kg
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Home / Archives for Marcelo Villalva

Todo conteúdo de Marcelo Villalva

Canal Solar How to know if a photovoltaic module is genuine
  • November 9, 2023
  • Coach

How do you know if a photovoltaic module is real?

Most consumers will never realize that they have installed “counterfeit” modules on their roof
Canal Solar How to know if a photovoltaic module is genuine
  • Coach

How do you know if a photovoltaic module is real?

Most consumers will never realize that they have installed “counterfeit” modules on their roof
  • July 27, 2023
  • Coach

Mechanical load tests of photovoltaic modules

The procedure is a good parameter to check the mechanical resistance of the product
  • Coach

Mechanical load tests of photovoltaic modules

The procedure is a good parameter to check the mechanical resistance of the product
Hybrid inverter vs off-grid inverter
  • March 11, 2022
  • Coach

Hybrid PV inverter x off-grid PV inverter

The market lacks a clear definition for the hybrid inverter, differentiating it from the off-grid inverter-charger
Hybrid inverter vs off-grid inverter
  • Coach

Hybrid PV inverter x off-grid PV inverter

The market lacks a clear definition for the hybrid inverter, differentiating it from the off-grid inverter-charger
  • March 7, 2022
  • Coach

How does load selection work in hybrid PV systems?

Hybrid photovoltaic systems are an evolution of conventional grid-tie systems
  • Coach

How does load selection work in hybrid PV systems?

Hybrid photovoltaic systems are an evolution of conventional grid-tie systems
  • March 1, 2022
  • Coach

What is a hybrid solar inverter?

What characteristics define a hybrid inverter? What inputs, outputs and operating modes does this equipment have?
  • Coach

What is a hybrid solar inverter?

What characteristics define a hybrid inverter? What inputs, outputs and operating modes does this equipment have?
  • December 22, 2021
  • Coach

How to safely replace a defective photovoltaic module?

Is it possible to exchange a photovoltaic module for another different from the original model? What precautions should be taken?
  • Coach

How to safely replace a defective photovoltaic module?

Is it possible to exchange a photovoltaic module for another different from the original model? What precautions should be taken?
  • November 3, 2021
  • Coach

210 mm mono-PERC modules with tripartite cells

As the industry turns to 182mm and 210mm cells, not everyone will be forced to live with large panels
  • Coach

210 mm mono-PERC modules with tripartite cells

As the industry turns to 182mm and 210mm cells, not everyone will be forced to live with large panels
  • June 25, 2021
  • Coach

Benefits of solar source for electric mobility

Many of the benefits of electric mobility will only be achieved with renewable sources of electrical energy
  • Coach

Benefits of solar source for electric mobility

Many of the benefits of electric mobility will only be achieved with renewable sources of electrical energy
  • May 7, 2021
  • Coach

About the origin of reverse current in photovoltaic systems

Reverse current must be prevented by using fuses in series with the strings
  • Coach

About the origin of reverse current in photovoltaic systems

Reverse current must be prevented by using fuses in series with the strings
  • February 27, 2021
  • Coach

The LID effect of photovoltaic cells

Light-induced degradation is a phenomenon that reduces the efficiency of photovoltaic cells
  • Coach

The LID effect of photovoltaic cells

Light-induced degradation is a phenomenon that reduces the efficiency of photovoltaic cells
Understanding the efficiency of photovoltaic inverters
  • February 27, 2021
  • Coach

Understanding the efficiency of photovoltaic inverters

To facilitate the qualification and comparison of inverters, the figure of average efficiency or weighted efficiency was created.
Understanding the efficiency of photovoltaic inverters
  • Coach

Understanding the efficiency of photovoltaic inverters

To facilitate the qualification and comparison of inverters, the figure of average efficiency or weighted efficiency was created.
Energy storage: electric battery technologies
  • February 22, 2021
  • Coach

Energy storage: electric battery technologies

The subject of electrochemical batteries is quite rich and extensive
Energy storage: electric battery technologies
  • Coach

Energy storage: electric battery technologies

The subject of electrochemical batteries is quite rich and extensive
Electricity microgrids
  • February 18, 2021
  • Coach

Electricity microgrids

The possibilities for using microgrids are almost endless and give consumers the freedom to use energy however and whenever they want.
Electricity microgrids
  • Coach

Electricity microgrids

The possibilities for using microgrids are almost endless and give consumers the freedom to use energy however and whenever they want.
BMS systems for lithium batteries
  • February 18, 2021
  • Coach

BMS systems for lithium batteries

Lithium batteries need electronic control and monitoring systems to operate safely
BMS systems for lithium batteries
  • Coach

BMS systems for lithium batteries

Lithium batteries need electronic control and monitoring systems to operate safely
  • December 28, 2020
  • Coach

Making inverters and photovoltaic arrays compatible in PVSyst

Understand the Show sizing function on the PVSyst system screen
  • Coach

Making inverters and photovoltaic arrays compatible in PVSyst

Understand the Show sizing function on the PVSyst system screen
  • November 30, 2020
  • Coach

MC4 Connector Incompatibility Case Study

Check out a curious case of incompatibility of MC4 connectors that occurred in the Brazilian photovoltaic market
  • Coach

MC4 Connector Incompatibility Case Study

Check out a curious case of incompatibility of MC4 connectors that occurred in the Brazilian photovoltaic market
  • November 30, 2020
  • Coach

How are photovoltaic inverters approved in Brazil?

Find out how the equipment approval process by INMETRO works
  • Coach

How are photovoltaic inverters approved in Brazil?

Find out how the equipment approval process by INMETRO works
  • November 26, 2020
  • Coach

How do you know if the DPS needs to be replaced?

When to replace your DPS? Learn how to prevent failures in your solar energy system
  • Coach

How do you know if the DPS needs to be replaced?

When to replace your DPS? Learn how to prevent failures in your solar energy system
  • October 30, 2020
  • Coach

Stringbox with DPS is necessary or not? What does NBR 16690 say?

The main function of every strinbox is to concatenate the string circuits
  • Coach

Stringbox with DPS is necessary or not? What does NBR 16690 say?

The main function of every strinbox is to concatenate the string circuits
  • October 23, 2020
  • Coach

Cast-mono technology: poly silicon that is almost monocrystalline

The term cast-mono is an allusion to cast or molded monocrystalline silicon
  • Coach

Cast-mono technology: poly silicon that is almost monocrystalline

The term cast-mono is an allusion to cast or molded monocrystalline silicon
Basic equipment for commissioning PV systems
  • September 23, 2020
  • Coach

Basic equipment for commissioning PV systems

Understand what commissioning is and what instruments are needed to carry it out
Basic equipment for commissioning PV systems
  • Coach

Basic equipment for commissioning PV systems

Understand what commissioning is and what instruments are needed to carry it out
  • 31 for August, 2020
  • Coach

Compatibility between bifacial photovoltaic modules and optimizers

This article addresses the compatibility of bifacial solar panels with optimizers
  • Coach

Compatibility between bifacial photovoltaic modules and optimizers

This article addresses the compatibility of bifacial solar panels with optimizers
What are N-type photovoltaic solar cells?
  • 11 for August, 2020
  • Coach

What are N-type photovoltaic solar cells?

Understand what type N cells are and how they differ from type P
What are N-type photovoltaic solar cells?
  • Coach

What are N-type photovoltaic solar cells?

Understand what type N cells are and how they differ from type P
Are generic MC4 connectors compatible?
  • 6 for August, 2020
  • Coach

Are generic MC4 connectors compatible?

Find out the specifications of original and generic connectors
Are generic MC4 connectors compatible?
  • Coach

Are generic MC4 connectors compatible?

Find out the specifications of original and generic connectors
How to apply NBR 16690 in a voltage drop study in a DC circuit?
  • July 25, 2020
  • Coach

How to apply NBR 16690 in a voltage drop study in a DC circuit?

Understand, based on a real example, how NBR 16690 deals with voltage drops in direct current circuits in photovoltaic systems
How to apply NBR 16690 in a voltage drop study in a DC circuit?
  • Coach

How to apply NBR 16690 in a voltage drop study in a DC circuit?

Understand, based on a real example, how NBR 16690 deals with voltage drops in direct current circuits in photovoltaic systems
Module inclined on a straight surface to illustrate the angle of inclination
  • July 11, 2020
  • Coach

How to determine the tilt angle of photovoltaic modules?

Discover how to calculate the ideal tilt angle for photovoltaic modules based on latitude and seasons.
Module inclined on a straight surface to illustrate the angle of inclination
  • Coach

How to determine the tilt angle of photovoltaic modules?

Discover how to calculate the ideal tilt angle for photovoltaic modules based on latitude and seasons.
  • July 11, 2020
  • Coach

Economic analysis of a photovoltaic system using PVSyst

Discover the PVSyst Economic Assessment tool and its advantages
  • Coach

Economic analysis of a photovoltaic system using PVSyst

Discover the PVSyst Economic Assessment tool and its advantages
Power factor of installations and power control in photovoltaic inverters
  • June 30, 2020
  • Coach

Power factor of installations and power control in inverters

Understand how inverter power control can manage voltage in distribution networks
Power factor of installations and power control in photovoltaic inverters
  • Coach

Power factor of installations and power control in inverters

Understand how inverter power control can manage voltage in distribution networks
PVSyst: photovoltaic systems with power optimizers
  • June 29, 2020
  • Coach

PVSyst: photovoltaic systems with power optimizers

Discover the functions of power optimizers in photovoltaic systems
PVSyst: photovoltaic systems with power optimizers
  • Coach

PVSyst: photovoltaic systems with power optimizers

Discover the functions of power optimizers in photovoltaic systems
PVSyst: inverter with multiple MPPT inputs
  • June 29, 2020
  • Coach

PVSyst: inverter with multiple MPPT inputs

This article was written based on PVSyst version 7
PVSyst: inverter with multiple MPPT inputs
  • Coach

PVSyst: inverter with multiple MPPT inputs

This article was written based on PVSyst version 7
Aerial thermography of photovoltaic solar plants
  • June 18, 2020
  • Coach

Aerial thermography of photovoltaic solar plants

Learn about thermography and how it can detect problems in photovoltaic plants
Aerial thermography of photovoltaic solar plants
  • Coach

Aerial thermography of photovoltaic solar plants

Learn about thermography and how it can detect problems in photovoltaic plants
Microgeneration system performance with power optimizers
  • May 31, 2020
  • Coach

Microgeneration system performance with power optimizers

Discover the performance of microgeneration with power optimizers through a case study
Microgeneration system performance with power optimizers
  • Coach

Microgeneration system performance with power optimizers

Discover the performance of microgeneration with power optimizers through a case study
CIGS thin films: an alternative to crystalline silicon
  • May 30, 2020
  • Coach

CIGS thin films: an alternative to crystalline silicon

The manufacturing process for thin films is diametrically opposite to that of crystalline semiconductors
CIGS thin films: an alternative to crystalline silicon
  • Coach

CIGS thin films: an alternative to crystalline silicon

The manufacturing process for thin films is diametrically opposite to that of crystalline semiconductors
DPS: the airbag of photovoltaic systems
  • 26 for April, 2020
  • Coach

DPS: the airbag of photovoltaic systems

The quality of this product is important for the safe operation of PV systems
DPS: the airbag of photovoltaic systems
  • Coach

DPS: the airbag of photovoltaic systems

The quality of this product is important for the safe operation of PV systems
Inverters with intelligent MPPT in partial shading situations
  • 19 for April, 2020
  • Coach

Inverters with intelligent MPPT in partial shading situations

Smart MPPT is a feature that equips some photovoltaic inverters available on the market
Inverters with intelligent MPPT in partial shading situations
  • Coach

Inverters with intelligent MPPT in partial shading situations

Smart MPPT is a feature that equips some photovoltaic inverters available on the market
Form factor as a quality indicator of PV modules
  • 2 for April, 2020
  • Coach

Form factor as a quality indicator of PV modules

Learn more about the form factor and how it evaluates the quality of power generating cells
Form factor as a quality indicator of PV modules
  • Coach

Form factor as a quality indicator of PV modules

Learn more about the form factor and how it evaluates the quality of power generating cells

Most read

Sizing of photovoltaic systems for group A

How to size photovoltaic systems for Group A?

Import tax puts investments, jobs and financing in the sector at risk, says CEO of ABSOLAR

Tax on solar panels threatens business

Effects of reverse flow and its impacts on photovoltaic systems

See the ranking of the main module suppliers until the 3rd quarter of 2023

See the ranking of the main module suppliers until the 3rd quarter of 2023

AFCI requirement sparks race among manufacturers to adapt inverters

AFCI requirement sparks race among manufacturers to adapt inverters

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