पवन ऊर्जा // WIND ENERGY

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Key Solar Energy Terms: Irradiance, Insolation, TSRF and More

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If you work in the solar industry, you know that the amount of solar energy available at a proposed project site is one of the most fundamental factors for determining whether installing solar makes sense for a customer. Obviously, the amount of solar energy—also referred to as irradiance or insolation—where the array will be sited will determine how much energy it can potentially produce. By-Ranveer Yadav There are a number of different metrics for expressing the amount of solar energy at a given location, however. Whether you’re new to the industry or are just looking for a refresher on some of the key terms and metrics for expressing how much sunlight will reach your solar array, today’s article has you covered.   Irradiance maps, like this one above, which visually communicate how much solar energy is available at each point on a roof. (Brighter colors indicate greater irradiance.) 1. Irradiance and Insolation Irradiance and insolation are perhaps two of t...
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Article 3: Reading Your Electricity Bill: A Beginner’s Guide

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You might not give your electricity bill much thought—except perhaps to lament how high it is—but electricity bills actually provide a lot of valuable information to inform the process of installing solar. For solar professionals, these bills are an easy way to quickly understand how much energy a customer uses, which is a key factor in determining what size PV system will meet their needs. They also show how the local utility company calculates a customer’s electricity charges, which can have important design implications. For homeowners or businesses considering solar, having a deeper understanding of the information contained in electricity bills can offer insights into whether installing solar makes sense, as well as whether switching to another billing plan may increase savings. In this article, we explain the terms, sections, and calculations in an electricity bill and how these change when a customer installs solar. In the  next article in our Solar PV Education ...
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Article 6: The Basic Principles that Guide PV System Costs

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By- Ranveer Yadav Costs Associated with a PV System In order to determine financial returns, it is important to have a solid understanding of the basic economics that dictate PV system costs. There are two general categories of PV systems costs: capital costs and operation and management (O&M) costs. Capital Costs Capital costs refer to the fixed, one-time costs of designing and installing the system. Capital costs are categorized into hard costs and soft costs. Hard costs are the costs of the equipment, including modules, inverters, and BOS components, as well as installation-related labor.  Soft costs include intangible costs such as permitting, taxes, customer acquisition costs, etc. Figure 1. Cost breakdown of PV systems. Figure 1 illustrates the relationship between soft and hard costs, and breaks down hard costs into its components. According to SEIA, while hard costs have come down dramatically over the last decade, soft costs have remained largely c...
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