Our blog is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Thank you for your support! Behind-the-meter (BTM) solar refers to rooftop or ground-mounted solar systems that generate electricity for on-site consumption or storage, rather than exporting power to the grid. “Behind the meter” means the solar array Read more »
Modern residential solar panels weigh between 40–55 pounds, or roughly 2.4–2.7 pounds per square foot. Understanding panel weight is important for roof structural assessment, safe installation practices, and transportation planning. Heavier panels don’t generate more electricity; weight varies by frame material and glass thickness. Weight by Panel Type Panel Type Typical Weight Per Square Foot Read more »
Solar panel efficiency—the percentage of sunlight converted into usable electricity—has improved steadily over the past decade. Modern residential panels achieve 20–23% efficiency, up from 15% a decade ago. While you cannot upgrade the panels themselves, you can increase overall system efficiency through maintenance, optimized installation, and strategic component upgrades. Understanding Solar Panel Efficiency Solar panel Read more »
Most solar panels are rectangular — but that’s not the whole picture. The shape of a solar panel is determined by the shape of its constituent solar cells, the arrangement of those cells, and the application the panel is designed for. Standard residential and commercial panels use a conventional rectangular layout, while specialty products for Read more »
Our blog is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Thank you for your support! A 200Ah (ampere-hour) solar battery stores between 2.4 and 4.8 kilowatt-hours (kWh) of electrical energy, depending on whether it operates at 12V or 24V system voltage. A 200Ah 12V lithium iron phosphate Read more »
Nominal Operating Cell Temperature (NOCT) is a standard testing condition used to estimate how hot solar panel cells get during real-world operation. While STC (Standard Test Conditions) measures panel performance in a lab at 25°C cell temperature, NOCT provides a more realistic reference point for predicting actual field performance — particularly in hot climates where Read more »
Solar Technologies: Current and Emerging Solar technology has evolved dramatically over the past decade, and 2026 marks an inflection point where multiple next-generation innovations are transitioning from laboratories to commercial products. Traditional silicon panels dominate the residential market, but perovskite tandem cells, flexible modules, building-integrated photovoltaics, and AI-powered monitoring systems are reshaping how and where Read more »
Solar analytics software helps installers, engineers, and asset owners plan, monitor, and optimize solar photovoltaic systems. These platforms range from design and simulation tools used during the planning phase to real-time operational analytics and predictive maintenance systems. In 2026, advanced analytics platforms use physics-based digital twins, machine learning, and cloud computing to improve project economics Read more »
Solar engineers design, analyze, and optimize solar energy systems — from residential rooftop arrays to utility-scale solar farms. The role spans electrical engineering, structural analysis, energy modeling, and project management. With US solar capacity at 239 GW and continuing to grow, demand for qualified solar engineers has expanded well beyond early-adopter markets and into mainstream Read more »
Solar battery installation adds energy storage to your solar photovoltaic system, allowing you to store excess daytime generation and use it at night or during grid outages. In 2026, battery installation costs range from $9,000 to $18,000 before incentives, with most homeowners paying $6,000 to $12,000 after applying the 30% federal Investment Tax Credit. The Read more »