Research

The research we build on.

These are the papers behind SOLSAT. They cover satellite imaging, sunlight and solar panels. Each entry says how we use it.

Literature we build on

The research library.

Filter by topic. Each entry links to the original source and says exactly how it informs SOLSAT.

Solar panel detection

2021

A global inventory of photovoltaic solar energy generating units

Kruitwagen, L., Story, K. T., Friedrich, J., Byers, L., Skillman, S., Hepburn, C. · Nature 598, 604 to 610

Use

Benchmark for utility-scale detection from Sentinel-2 and SPOT imagery; informs our solar-farm screening.

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Solar panel detection

2018

DeepSolar: A machine learning framework to efficiently construct a solar deployment database in the United States

Yu, J., Wang, Z., Majumdar, A., Rajagopal, R. · Joule 2(12), 2605 to 2617

Use

Proof that rooftop PV can be mapped nationally from imagery; the template for our as-built detection.

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Solar panel detection

2016

Automatic detection of solar photovoltaic arrays in high resolution aerial imagery

Malof, J. M., Bradbury, K., Collins, L. M., Newell, R. G. · Applied Energy 183, 229 to 240

Use

Early high-resolution PV detection baseline we compare panel-counting against.

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Solar panel detection

2016

Distributed solar photovoltaic array location and extent dataset for remote sensing object identification

Bradbury, K. et al. · Scientific Data 3, 160106

Use

Public labelled dataset used for pre-training before Thai fine-tuning.

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Solar panel detection

2015

U-Net: Convolutional networks for biomedical image segmentation

Ronneberger, O., Fischer, P., Brox, T. · MICCAI 2015 · arXiv:1505.04597

Use

The family of models behind how we outline roof planes.

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Solar panel detection

2023

Segment Anything

Kirillov, A. et al. · ICCV 2023 · arXiv:2304.02643

Use

Foundation-model prompting for fast obstacle and roof-edge labelling.

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Solar panel detection

2024

Mapping solar potential: comprehensive PV system detection with aerial and satellite images using SolarSAM

Matar, J., Albrecht, M., Kandelaki, A., Kotthoff, F., Duchon, M. · IEEE SmartGridComm 2024, Oslo

Use

Shows how the Segment Anything model (SAM) can outline solar panels in aerial and satellite images.

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Solar panel detection

2022

Photovoltaics detection in satellite imagery using deep learning and remote sensing

MIT thesis · DSpace@MIT, handle 1721.1/147238

Use

Capacity estimation from detected arrays, a step toward our portfolio scan.

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Sunlight & Himawari

2016

An introduction to Himawari-8/9: Japan’s new-generation geostationary meteorological satellites

Bessho, K. et al. · J. Meteorol. Soc. Japan 94(2), 151 to 183

Use

Sensor specification for the Himawari-8/9 imagery we ingest.

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Sunlight & Himawari

2024

Developing a Thailand solar irradiance map using Himawari-8 satellite imageries and deep learning models

Suwanwimolkul, S. et al. (Chulalongkorn University) · arXiv:2409.16320

Use

A Thai benchmark for mapping sunlight from satellites. It is our closest local reference.

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Sunlight & Himawari

2018

Evaluation of Himawari-8 surface downwelling solar radiation by ground-based measurements

Damiani, A. et al. · Atmos. Meas. Tech. 11, 2501 to 2521

Use

Shows that clouds bias satellite sunlight readings (global horizontal irradiance, GHI). This is why we calibrate on local data.

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Sunlight & Himawari

2023

Thailand regional solar PV forecasting (with EGAT)

Hawai‘i Natural Energy Institute · Project report

Use

One-hour-ahead forecasts from Himawari-8 over Thai test sites. Shows the approach at grid scale.

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Sunlight & Himawari

2002

A new airmass independent formulation for the Linke turbidity coefficient

Ineichen, P., Perez, R. · Solar Energy 73(3), 151 to 157

Use

A clear-sky model we tune for Thai haze and dust (PM2.5) seasons.

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Sunlight & Himawari

2014

Learning phrase representations using RNN encoder-decoder for statistical machine translation

Cho, K. et al. · EMNLP 2014 · arXiv:1406.1078

Use

Origin of the memory unit (GRU) in our sunlight forecasting model.

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Sunlight & Himawari

2018

The National Solar Radiation Data Base (NSRDB)

Sengupta, M. et al. · Renew. Sustain. Energy Rev. 89, 51 to 60

Use

Reference design for a satellite-derived solar resource database.

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Floating & farm solar

2016

Floating photovoltaic power plant: A review

Sahu, A., Yadav, N., Sudhakar, K. · Renew. Sustain. Energy Rev. 66, 815 to 824

Use

Engineering background for floating-array yield and cooling effects.

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Floating & farm solar

2023

Mapping global water-surface photovoltaics with satellite images

Nanjing University-led team · Renew. Sustain. Energy Rev. (2023)

Use

Global floating-PV inventory; method for water-body screening.

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Floating & farm solar

2026

Water-surface PV inventory for China, 2015 to 2024 (SAR + optical fusion)

ESSD authors (see DOI) · Earth Syst. Sci. Data 18, 5951 to 5968

Use

Shows that radar sees through cloud and glare on water. This is our route for floating solar in the monsoon.

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Floating & farm solar

2025

Enhancing irrigation reservoirs through floating photovoltaic: a satellite mapping-based multifunctional water-energy strategy

Benito, A. O., Lannutti, E., Verdezoto, P. C. · ISES Solar World Congress 2025

Use

Uses Sentinel-2 satellite images to screen reservoirs for floating solar sites.

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Floating & farm solar

2011

Combining solar photovoltaic panels and food crops for optimising land use: towards new agrivoltaic schemes

Dupraz, C. et al. · Renewable Energy 36(10), 2725 to 2732

Use

Land-equivalent-ratio framing for our agrivoltaic research track.

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Yield & finance

2018

pvlib python: a python package for modeling solar energy systems

Holmgren, W. F., Hansen, C. W., Mikofski, M. A. · J. Open Source Softw. 3(29), 884

Use

Physics baseline for clear-sky and yield modelling.

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Yield & finance

2013

Photovoltaic degradation rates: an analytical review

Jordan, D. C., Kurtz, S. R. · Prog. Photovolt. 21(1), 12 to 29

Use

Source range for the degradation assumption in the financial twin.

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Yield & finance

2016

Rooftop solar photovoltaic technical potential in the United States: a detailed assessment

Gagnon, P., Margolis, R., Melius, J., Phillips, C., Elmore, R. · NREL Technical Report NREL/TP-6A20-65298

Use

Methodology reference for building-level technical potential.

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Thailand

2021

Hydro-Floating Solar Hybrid at Sirindhorn Dam begins commercial operation

EGAT · Press release

Use

Thailand’s flagship floating asset. A target site type for our monitoring service.

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Citations are to third-party work; listing does not imply endorsement of SOLSAT by the authors. Verify each reference against its DOI before quoting.

Open research questions

What we are working on next, and looking for partners on.

Monsoon

Cloud-robust monitoring

Combining radar (SAR) with normal satellite images, so floating and rooftop arrays stay visible through the rainy season.

Haze

Dust (PM2.5) and soiling

Linking how much dust is in the air to lost output and cleaning plans.

Agrivoltaics

Crop and yield together

Measuring crops under raised panels to estimate how well land is shared between food and energy, from space.

Finance

Solar credit risk

Turning a yield range into loan-risk signals that lenders can check.