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cleanenergy4africa.org article

8 cool FREE design tools for solar energy systems – Clean Energy 4 Africa

https://cleanenergy4africa.org/8-cool-free-design-tools-for-solar-energy-systems

In the following list, I have compiled 8 FREE software and online design tools for on-grid and off-grid solar systems design. PVWatts (developed by the National Renewable Energy Laboratory NREL) is a great and easy-to-use online tool for estimating the energy yield of grid-connected PV systems anywhere in the world. SAM (or System Adviser Model) is another software developed by NREL and is probably the most complex in this list. SAM is used to model the technical performance of several renewable energy system and evaluate economic and financial feasibility. SISIFO is an online design tool developed by the Solar Energy Institute of the Universidad Politecnica de Madrid and is used for the simulation of on-grid PV systems and also irrigation systems powered by PV panels. PV\*SOL online, developed by Valentin Software, is a web version of the famous PV\*SOL software and is used for the design and simulation of PV systems.

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opensustain.tech article

Open Sustainable Technology

https://opensustain.tech

**A directory and analysis of the open source ecosystem in the areas of climate change, sustainable energy, biodiversity and natural resources.**. Open Sustainable Technology's mission is to find, list, and share projects that preserve or analyze natural ecosystems through open technology, methods, data, intelligence, knowledge or tools.*. Read our guidelines on: How to Identify Open Source Projects in Sustainability and Climate.**. > This category of tools targets the entire system design of renewable energy systems – from obtaining data, site selection, and material simulation to yield forecasting and quality control. ### Photovoltaics and Solar Energy¶. > **How?** These tools help simulate, model, and forecast photovoltaic energy output, including optical and ray-tracing simulations; analyze and visualize system data; support quality control; and interface with solar hardware like panels, inverters, and batteries. * rdtools - An open source library to support reproducible technical analysis of time series data from photovoltaic energy systems. * solar-data-tools - Data analysis tools for working with historical PV solar time-series data sets.

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us.fitgap.com article

Best open source solar design software February 2026

https://us.fitgap.com/search/solar-design-software/open-source

Explore the best open source solar design software with curated product lists and clear guides. Use FitGap's data-driven insights to find your right fit.

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openpvtools.readthedocs.io article

Open Source Tools for PV Modeling — openpvtools documentation

https://openpvtools.readthedocs.io

* Open Source Tools for PV Modeling. # Open Source Tools for PV Modeling. Solar power researchers and engineers are developing a growing number of open source software tools for energy modeling. Also see the companion presentation at the 10th PVPMC Workshop and 2018 Systems Symposium, plus additional talks on open source PV software from DOE, NREL, and Sandia. Table of Open Source PV Tools. | pvlib python | General purpose PV modeling | 2013 – \* | | | Python | BSD 3 |. | RdTools | Technical analysis of PV timeseries data | 2016 – \* | | | Python | MIT |. | photovoltaic | General purpose PV modeling | 2017 – \* | | | Python | GPL 3 |. | feedinlib | PV timeseries modeling | 2015 – \* | | | Python | GPL 3 |. | solaR | General purpose PV modeling | 2010 – \* | | | R | GPL 3 |.

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ratedpower.com article

Solar design software for utility-scale plants — RatedPower

https://ratedpower.com/platform

PV plant design and engineering from siting to offtake. # Solar software for utility-scale plants. Lack of efficiency has become an existential risk for solar developers. Our solar PV and storage software delivers the efficiency your company needs to maximize returns and pipeline —and minimize risk and LCOE. * Get project capacity and energy yield estimates while designing. ## Calculate *your ROI* from solar, storage and hybrid software. We partnered with Enverus to help utility-scale developers, IPPs, and EPCs uncover just how much ROI they could unlock by implementing solar, storage, and hybrid design software—before their next project even breaks ground. ## Increase your solar asset profitability by 20% and reduce LCOE with our PV system design software. Unlock the potential and boost productivity of your development and engineering teams across the entire PV, hybrid and standalone storage project lifecycle stage. * **Add storage to your solar plant** Hybridize your solar plant with a battery energy storage system or design a separate standalone BESS.

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opensolar.com article

OpenSolar | Accelerating Solar Adoption with Free Software

https://www.opensolar.com

## We’re on a mission to accelerate the adoption of solar and renewable energy globally. ## We **donate 1% of our annual revenues** to the solar electrification of underserved communities. ## Discover **who we are and what we do**. Learn about our mission and the team behind the innovative solar solutions we offer. Join our team and explore exciting opportunities in renewable energy. Discover how data, policy and innovation are shaping the solar industry. As solar and storage systems become more advanced, all-in-one solutions are emerging as a simpler way to deliver the same benefits. As solar market conditions continue to evolve, installers are looking for ways to build a more resilient pipeline. Your feedback plays a big role in what we build at OpenSolar. Here’s a look at some of the features we’ve recently released, what we’re working on next, and a new way you’ll soon be able to vote directly on what we prioritise next.

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