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Institute of Solar Technology (IST) an autonomous body for startups in solar energy training, have a milestone with 12 years of experience in Entrepreneurship Business Development, a long history of operation. Institute was founded in 2012, Indian oldest institute. To know more look "About Us" section.

8760-Hour Solar Simulation Improves Rooftop PV Generation

A year has 8,760 hours. An 8,760-hour simulation calculates solar irradiance, cell temperature, and power output separately for every single one of them, using real (or representative) hourly weather data for the site.
Utility-scale ground-mount systems are relatively forgiving of simulation shortcuts: uniform tilt, uniform azimuth, minimal shading. Rooftops are the opposite case, and that's exactly where hourly resolution earns its keep.
Multiple roof planes, multiple micro-climates. A single rooftop system often spans two or three faces at different tilts and azimuths — a south-facing main roof plus an east-facing dormer, say. Each face has its own hourly irradiance curve; a monthly average can't capture how the east face's morning peak and the south face's midday peak interact with a shared inverter's clipping threshold.
Shading is a time-of-day problem, not an annual-average problem. A chimney, a neighboring tree, or an HVAC unit doesn't cast a flat "5% shading loss" — it casts a shadow that sweeps across specific modules at specific hours, on specific days of the year, with a specific angular geometry. Only an hour-by-hour (ideally sub-hourly) simulation, working from real sun-position and shading-object geometry, gets this right. Annualized shading factors routinely mis-estimate the loss by 2-3x in either direction.
Temperature swings hour by hour. Module output drops meaningfully as cells heat up — typically -0.3% to -0.4% per °C above 25°C. On a rooftop with limited airflow underneath the array, a module might run 15-20°C hotter than ambient at 1pm in summer. Capturing that requires an hourly cell-temperature model (using ambient temperature, wind speed, and irradiance at that specific hour), not a monthly average temperature.
Inverter clipping is inherently a peak-moment phenomenon. If a system is sized with a DC/AC ratio above 1.0 (common for cost optimization), the inverter will clip excess DC power during a fairly narrow band of high-irradiance hours around midday in summer. A monthly-average model simply cannot see this clipping window; only an hourly (or sub-hourly) simulation can quantify how much energy is actually lost to it.

Rooftop Hybrid Solar Simulation Software RHS Version-11.12

Rooftop Hybrid Solar (RHS) V.11.12 appears to be a specialized, often freely available, simulation software tool used for designing, modeling, and analyzing rooftop solar photovoltaic systems, particularly those combined with battery storage. It helps users simulate system performance, evaluate hybrid setups (grid + battery), and often aids in technical, financial, and regulatory planning for solar installations.

• Definition: A hybrid system combines solar panels with a battery system to store energy, while remaining connected to the utility grid, offering both off-grid and on-grid capabilities.
• Simulation & Design: Software like RHS V.11.12 helps optimize component selection, such as inverter sizing, battery capacity, and panel orientation.
• Benefits: These systems are versatile, offering continuous power during grid outages, reducing high-tariff electricity consumption, and maximizing self-consumption.
• Components: Simulations typically include photovoltaic modules, hybrid inverters, Lithium-ion or Lead-acid battery packs, and monitoring systems.
• Hybrid & Storage Focus: RHS specializes in hybrid systems (combining solar with storage - Lithium-ion battery ESS) to maximize self-consumption.
• Performance Analysis: These tools calculate energy yield, production losses, PR %, CUF, Specific Yield per Day, DC/AC ratio and Yearly and monthly average values of photovoltaic electricity (AC) delivered by the total installed capacity of a PV system.
• Financial Analysis: Calculates critical financial indicators such as Levelized Cost of Energy (LCOE) and Return on Investment (ROI) to evaluate profitability.
• Technical Planning: Assists in auditing and designing, suitable for professional solar project development.

This software developed and offered by the Institute of Solar Technology (IST), to help professionals and rooftop solar vendor in the solar industry. 

IST provide business training and engineers training. Not for solar installer /labour training. If you want to become solar expert to make big solar business, enroll now.

Solar business course provides training on starting and running a solar energy business, covering technical aspects of solar panel systems, business planning, marketing, and project management. These courses cater to individuals interested in entrepreneurship in the renewable energy sector, as well as professionals looking to expand their knowledge.

Active Participant Presence in Learning:

1. Engaging Activities:Incorporating interactive learning activities, such as group discussions, role-playing, simulations, and hands-on projects, can enhance participant engagement and knowledge retention.
2. Real-World Applications:Linking the training content to real-world applications, such as case studies and site visits, can help participants understand the practical relevance of the knowledge and skills being taught.
3. Technology Integration:Utilizing technology, such as virtual reality or online platforms, can provide immersive and interactive learning experiences, especially for complex tasks.
4. Collaborative Learning:Fostering a collaborative learning environment where participants can learn from each other's experiences and perspectives can enhance the overall learning experience.

Discover the PV business and expand your professional options

Solar Project Design Master Course (Rooftop and Large solar system)

Huge job opportunity Solar Design engineer job

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For working professionals, early morning or night class slot available

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Solar Project Design Master Course: provides a vast opportunities in getting wider knowledge in the areas of concept development, site identification, feasibility study, detailed system design, engineering, construction & commercial operation, operational performance monitoring of solar Utility Scale power projects, financial aspects of the solar power plant like DPR,DSCR,ROI,CUF estimation and CAPEX ,OPEX modelling.
Solar Power Plant Releated Cloud Software access -
👉Know about IST SunPower System solar software

1. Site Assessment
2. Hybrid On-Grid System Simulation
3. Solar DCDB Design
4. Solar ACDB Design
5. Solar Power Plant SLD
6. Solar Project Quotation
7. Solar Project Bankability Report
8. Solar Power Plant BOQ

Admission going on for 4th Batch of Nov - 2026

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PV Technology & Business Management - Business Course (Online)
(Rooftop and Large solar system)

For working professionals, early morning or night class slot available

👉 Introduce with Mentor

PV Technology & Business Management course to boost your business.
Institute of Solar Technology (IST) cover business opportunities in Residential, Public Sector, Commercial and Industry.
Solar Power Plant Releated Cloud Software access -
👉Know about IST SunPower System solar software

1. Site Assessment
2. Hybrid On-Grid System Simulation
3. Solar DCDB Design
4. Solar ACDB Design
5. Solar Power Plant SLD
6. Solar Project Quotation
7. Solar Project Bankability Report
8. Solar Power Plant BOQ

Admission going on for Nov - 2026

Rating:

Submit Registration (Online Course)

Go to Course Page

To do PM - Surya Ghar: Muft Bijli Yojana Project, required technical commercial knowledge and skill, like vendor registration process, residential owner's registration process, PV Solar system quality understanding, project design, components selection, installation process, PM Surya Ghar Document making to get project Feasibility Approval, DISCOM Inspection Process. You will learn as per PM Surya Ghar project guide. A single complete course for solar business.

Rooftop Hybrid Solar Simulation Software RHS Version-11.12

Rooftop Hybrid Solar (RHS) simulation software, such as Rooftop Hybrid Solar Simulation Software RHS V 11.12, is designed to model, design, and optimize grid-connected solar PV systems with battery energy storage. These tools simulate system performance under varying solar irradiation, battery state-of-charge, and grid-connected,, or off-grid scenarios, facilitating technical analysis.