If you’re exploring solar for your business, it’s important to know that the industry has two main sectors – commercial and residential. While the concept of capturing energy from the sun is the same for both, there are some differences in commercial and residential solar technology. Things like solar panel size, wattage, efficiencies, and the way the panels themselves are manufactured vary based on the end application.

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Here’s an overview of some of the primary differences between commercial and residential solar panels.

To understand how big solar panels are, let’s first talk about the basic building block – the photovoltaic (PV) solar cell. We’ll focus on solar cells used for mono or polycrystalline panels, since those are most commonly used for commercial applications.

Individual PV solar cells are thin slices of silicon that typically measure 6 inches long by 6 inches wide. Multiple solar cells are assembled together to form a rectangular shaped panel.

The standard solar panel size typically contains either 60 or 72 cells. You can also find panels with as few as 32 solar cells on recreational vehicles, as well as some larger commercial panels with as many as 96 cells.

As for the actual footprint of the assembled panel, there are two key factors that impact solar panel size: the type of solar cell (monocrystalline, polycrystalline, or thin film) and the number of cells. The greater the number of cells, the longer the panel is.

This is where we start to get into the differences between commercial solar panels and those used in residential projects.

Panel efficiency is the other factor at play here. You may see one manufacturer that offers a 72-cell commercial solar panel that produces 400 watts of power, while a competitor’s 72-cell panel produces slightly more or less power.

It used to be that if you needed each panel to produce more watts of power, you needed to add more PV cells. However, as photovoltaic cell technology has advanced in recent years, that old equation is falling by the wayside.

Today’s modern panels are much more efficient, which means that you can generate more power without increasing the actual footprint. For example, the newest generation of monocrystalline panels are about 5% more efficient than their predecessors.

This is why there’s often no difference in the physical size of a 400 watt and 500 watt solar panel – the solar panel size depends on the materials and the efficiency.

The other important consideration when talking about solar panel size is understanding how much solar panels weigh.

If you’re planning a rooftop mounted solar system, it’s critical that you understand how much your solar panels weigh, so that you can determine if your roof can support the system.

As with the size, the weight of a solar panel can vary by manufacturer. Typically, 60-cell residential solar panels weigh around 40 pounds a piece. The larger 72-cell panels used for commercial solar installations can weigh 50 pounds each or more.

The weight also varies based on the type of material used to make the solar panel, due in part to the manufacturing process. For example, a 365-watt monocrystalline solar panel could weigh 45 pounds whereas one made of polycrystalline cells would weigh 49 pounds.

Keep in mind that the weights above don’t include any of the mounting equipment, so that’s something else that you’ll need to consider when working with your solar provider.

If you need even more resilience than what’s provided by your solar panels, you may also want to include battery storage as a part of your overall solar energy plan.

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Most solar storage systems use banks of lithium ion (Li-ion) batteries to store excess energy. The number of batteries needed will depend on the size of your system and your specific energy needs.

Thanks to technological advancements in recent years, the newest Li-ion batteries are safer, smaller, and increasingly more affordable than other types of batteries available on the market. They also have high energy storage capacity and can be recharged repeatedly.

The good news is that the weight of your energy storage system isn’t really a factor when it comes to roof-mounted arrays. Most solar battery systems are housed on the ground and connected to the solar system via wires.

Solar panel systems are not one-size-fits-all, so it’s always best to work with a reputable commercial solar provider that will design, install and maintain a solar system that’s customized for your business. A company well versed in commercial solar panel installation will be able to expertly guide you in creating a system that can help you accomplish your specific energy goals.

Solar professionals, like those at Velo Solar, can help you select the correct solar panel size, calculate how many solar panels you’ll need, and ensure that your system will provide the solar power you need now while still being able to grow with you in the future.

In some cases, the cost savings of generating your own solar energy may still outweigh the cost of reinforcing your facility’s roof, but if it doesn’t, there are several other solar options you can consider, including a ground-mounted array or solar carports.

Let Velo Solar help your business lower its energy costs and its carbon footprint, while also giving you the peace of mind that a solar plus storage system provides during a grid outage.

Crystal Method in Agile Development/Framework

Crystal methods are flexible approaches used in Agile software development to manage projects effectively. They adapt to the needs of the team and the project, promoting collaboration, communication, and adaptability for successful outcomes.

What is Crystal methods in Agile Development/Framework?

The crystal method is an agile framework that is considered a lightweight or agile methodology that focuses on individuals and their interactions. The methods are color-coded to significant risk to human life. It is mainly for short-term projects by a team of developers working out of a single workspace. Among a few Agile Software Development Life Cycle (SDLC) models crystal is considered as one of the Agile SDLC models.

Two core beliefs of the Crystal method:

• Find your own way and methods to optimize workflow.
• Make use of unique methods to make the project unique and dynamic.

History of the Crystal Method

The crystal method was developed by an American scientist named Alistair Cockburn who worked at IBM. He decided not to focus on step-by-step developmental strategies, but to develop team collaboration and communication. Some of the traits of Cockburn's Crystal method were:

• Human-powered i.e. the project should be flexible and people involved in preferred work.
• Adaptive i.e. approaches don't have any fixed tools but can be changed anytime to meet the team's specific needs.
• Ultra-light i.e. this methodology doesn't require much documentation.

Properties of Crystal Agile Framework

1. Frequent Delivery:  It allows you regularly deliver the products and test code to real users. Without this, you might build a product that nobody needs.
2. Reflective Improvement: No matter how good you have done or how bad you have done. Since there are always areas where the product can be improved, so the teams can implement to improve their future practices.
3. Osmotic Communication: Alistair stated that having the teams in the same physical phase is very much important as it allows information to flow in between members of a team as in osmosis.
4. Personal Safety: There are no bad suggestions in a crystal team, team members should feel safe to discuss ideas openly without any fear.
5. Focus: Each member of the team knows exactly what to do, which enables them to focus their attention. This boosts team interaction and works towards the same goal.
6. Easy access to expert users: It enhances team communication with users and gets regular feedback from real users.
7. Technical tooling: It contains very specific technical tools which to be used by the software development team during testing, management, and configuration. These tools make it enable the team to identify any error within less time.
8. Continuous learning: The framework emphasizes on continuous learning, enabling team members to acquire new skills and knowledge, and apply them in their work.
9. Teamwork: The framework stresses on the importance of teamwork, promoting collaboration, and mutual support among team members.
10. Timeboxing: The framework adopts timeboxing to manage project deadlines, ensuring that the team delivers within set timelines.
11. Incremental development: The framework promotes incremental development, enabling the team to deliver working software frequently, and adapt to changes as they arise.
12. Automated testing: The framework emphasizes on automated testing, enabling the team to detect and fix bugs early, reducing the cost of fixing errors at later stages.
13. Customer involvement: The framework emphasizes on involving customers in the development process, promoting customer satisfaction, and delivering products that meet their needs.
14. Leadership: The framework encourages leadership, enabling team members to take ownership of their work and make decisions that contribute to the success of the project.

How does Crystal Methodology Operates?

Till now, we got to know that crystal is a family of various developmental approaches, and it is not a group of prescribed developmental tools and methods. In the beginning, the approach is set by considering the business requirements and the needs of the project. Various methodologies in the Crystal family also known as weights of the Crystal approach are represented by different colors of the spectrum.
Crystal family consists of many variants like Crystal Clear, Crystal Yellow, Crystal Red, Crystal Sapphire, Crystal Red, Crystal Orange Web, and Crystal Diamond.

1. Crystal Clear- The team consists of only 1-6 members that is suitable for short-term projects where members work out in a single workspace.
2. Crystal Yellow- It has a small team size of 7-20 members, where feedback is taken from Real Users. This variant involves automated testing which resolves bugs faster and reduces the use of too much documentation.
3. Crystal Orange- It has a team size of 21-40 members, where the team is split according to their functional skills. Here the project generally lasts for 1-2 years and the release is required every 3 to 4 months.
4. Crystal Orange Web- It has also a team size of 21-40 members were the projects that have a continually evolving code base that is being used by the public. It is also similar to Crystal Orange but here they do not deal with a single project but a series of initiatives that required programming.
5. Crystal Red- The software development is led by 40-80 members where the teams can be formed and divided according to requirements.
6. Crystal Maroon- It involves large-sized projects where the team size is 80-200 members and where methods are different and as per the requirement of the software.
7. Crystal Diamond & Sapphire- This variant is used in large projects where there is a potential risk to human life.

The below figure illustrates about crystal team

Benefits of using the Crystal Agile Framework

Following are the benefits of using Crystal Agile Framework:

• Collaboration: Facilitate and enhance team communication and accountability.
• Adaptability: The adaptive approach lets the team respond well to the demanding requirements.
• Empowerment: Allows team to work with the one they see as the most effective.
• Efficiency: Teams talk directly with each other, which reduces management overhead.
• Faster delivery: The framework enables the team to deliver working software faster, which can help gain a competitive advantage in the market.
• Higher quality: The framework emphasizes on quality, enabling the team to detect and fix defects early in the development process, resulting in a higher quality product.
• Improved customer satisfaction: The framework promotes customer involvement, enabling the team to deliver products that meet customer needs, resulting in higher customer satisfaction.
• Increased productivity: The framework enables the team to focus on delivering the highest value features, which can increase productivity and reduce waste.
• Flexibility: The framework is highly adaptable, enabling the team to adjust to changing requirements, and make decisions based on real-time feedback.
• Autonomy: The framework promotes empowerment, enabling team members to take ownership of their work, and make decisions that contribute to the success of the project.
• Reduced risk: The framework promotes risk management, enabling the team to identify and mitigate potential risks early in the development process, reducing the likelihood of project failure.

Drawbacks of using the Crystal Agile Framework

Following are the drawbacks of using the Crystal Agile Framework:

• Ambiguity: A lack of pre-defined plans may lead to confusion and loss of focus.
• Disorganization: Lack of structure may slow down inexperienced teams.
• Uncertainty: Not clear on how a remote team can share knowledge informally.
• Lack of predictability: The framework's emphasis on adaptability and flexibility may result in a lack of predictability, making it difficult to plan and estimate project timelines and budgets.
• Lack of documentation: The framework's emphasis on communication and collaboration may result in a lack of documentation, making it difficult to track progress and maintain a record of decisions.
• Limited scalability: The framework may not be suitable for large or complex projects, as the lack of structure and predefined plans may make it difficult to manage teams at scale.
• Dependence on team expertise: The framework relies heavily on the expertise and skills of the development team, which may not be suitable for teams with limited experience or knowledge.
• Lack of clarity on roles and responsibilities: The framework's emphasis on self-organizing teams may result in a lack of clarity on roles and responsibilities, leading to confusion and a loss of focus.
• Inability to handle regulatory requirements: The framework may not be suitable for projects with strict regulatory requirements, as the lack of documentation and structure may not meet compliance standards.
• Potential for informal knowledge sharing: The framework's emphasis on osmotic communication may result in informal knowledge sharing, which may be difficult to track and monitor for accuracy and completeness.

Conclusion

The Crystal Method is expandable. It may be used by small teams or large teams to work on simple or complex objects. Crystal Method places importance on developmental skills and interactions which in turn encourage the exchange of ideas. Crystal Method is also beneficial for the clients as it delivers the most important components of the product first. But on the other hand, the Crystal Method does not plan based on the requirements of the projects.

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