Home Solar Planning
Evaluate roofs, yards, carports, and sheds before deciding where panels should go.
Solar Irradiance Data Logger
Measure Solar Irradiance in W/m² — and Daily Solar Energy in kWh/m².
Record sunlight over hours, days, or months. Compare panel locations, shading, and solar exposure with 180-day memory and CSV export.
Solar Irradiance — W/m²
Daily Solar Energy — kWh/m²
180-Day Memory
CSV Export
Measures incoming sunlight — not solar panel voltage, current, or electrical watt output.
Measure first.
Plan panel placement with real solar data.
180-Day MemoryData stored in the meter
Real-Time CurvesSee sunlight change over time
Exportable DataReview in spreadsheet software
No Cloud RequiredBluetooth app workflow
Replace Guesswork With Data
Solar panels are expensive. Guessing at placement can be even more expensive.
A location that looks sunny at noon may receive less useful solar energy across the full day because of trees, buildings, roof orientation, weather, or seasonal changes.
Compare candidate locations
Measure before committing to a rooftop, shed, yard, RV, or off-grid setup.
See shading over time
Identify when sunlight rises, peaks, drops, or disappears during the day.
Separate sunlight from system issues
Use solar resource data as context when electrical output is lower than expected.
180
days of SRI and DSRE data stored in the meter
Leave EVO-Solar at the measurement location. Your phone does not need to stay beside it. Reconnect later to review and export recorded data.
Who It Is For
Built for people who need more than a single spot reading.
EVO-Solar is most useful when the goal is to record, compare, and analyze solar conditions over time.
Installers & Technicians
Collect recorded irradiance data and export CSV files for comparison, reports, and site discussions.
RV & Off-Grid Solar
Compare campsite or panel locations and understand changes in available sunlight throughout the day.
Sunlight-Side Troubleshooting
Check whether low solar output may be related to insufficient sunlight, shading, or panel orientation before investigating the electrical system.
Real-Time Solar Irradiance
See when sunlight rises, peaks, and falls.
SRI shows solar irradiance in W/m². The daily curve makes changing sunlight conditions easier to understand than a single isolated number.
- Identify peak sunlight hours.
- See short-term effects from passing clouds or shading.
- Compare the meter angle with the solar panel angle.
- Export recorded values for further analysis.
SRI: Solar Radiation Intensity, measured in W/m².
Daily Solar Energy
Understand the total solar resource received each day.
DSRE accumulates solar radiation energy over the day and expresses it in kWh/m². It helps you compare clear days, cloudy days, seasonal changes, and different measurement locations.
- Compare daily solar exposure instead of relying on one moment.
- Evaluate the effect of weather and recurring shade.
- Review monthly patterns and long-term changes.
- Support data-based panel and storage planning.
DSRE: Daily Solar Radiation Energy, measured in kWh/m².
CSV Data Export
Move recorded solar data from the field to your computer.
Review SRI and DSRE curves in the EvoDevice app, then export recorded measurements as CSV files for spreadsheet analysis, comparisons, and reports.
- Review real-time and historical data in the app.
- Export values for Excel or other spreadsheet software.
- Compare dates, locations, angles, or operating conditions.
- No cloud account or subscription is required.
Consistent Positioning
Match the meter orientation to the solar panel.
For fixed-position monitoring, EVO-Solar can mount on standard 1/2-inch PVC pipe. Position the pipe so the meter face stays parallel to the solar panel.
- Suitable for rooftop, yard, shed, RV, and off-grid monitoring.
- Helps maintain a consistent test angle over time.
- Anti-slip pads also help the meter stay in place directly on a panel.
- Compact setup for long-term outdoor measurements.
Designed for Real-World Monitoring
Flexible setup for panels, yards, roofs, and off-grid projects.
Use the placement method that fits the job, while keeping the sensor oriented consistently for meaningful comparisons.
Secure on the Panel
Anti-slip pads help the meter stay in place during direct panel measurements.
Simple App Workflow
Start the meter, open the EvoDevice app, and review recorded SRI data and curves.
Compact Field Setup
A small sensor body makes it practical to place near portable, residential, or off-grid solar systems.
Simple Monitoring Workflow
Place it. Record. Reconnect and analyze.
The meter stores measurement data internally, so the phone does not need to remain nearby during the full monitoring period.
1
Place EVO-Solar
Position the sensor at the location and angle you want to evaluate.
2
Let It Record
Collect SRI and DSRE data over hours, days, or weeks without keeping the phone beside it.
3
Sync & Export
Reconnect by Bluetooth, review curves in the app, and export CSV files for analysis.
Frequently Asked Questions
Important details before you buy.
Does my phone need to stay connected while EVO-Solar is recording?
No. EVO-Solar stores measurement data in onboard memory. You can reconnect later to sync, review, and export the stored data.
What is the difference between SRI and DSRE?
SRI is the current solar irradiance in W/m². DSRE is the solar radiation energy accumulated across the day in kWh/m². Together they show both current conditions and the total daily solar resource.
Does EVO-Solar measure solar panel electrical output?
No. EVO-Solar measures incoming solar radiation, not panel voltage, current, or watt output. Electrical output is also affected by panel efficiency, temperature, wiring, inverter behavior, battery state, load, and other system conditions.
Can I export the recorded data?
Yes. SRI and DSRE data can be exported as CSV files for use in Excel or other spreadsheet and analysis software.
How should I position the meter for panel evaluation?
Keep the sensor face parallel to the solar panel. You can place it directly on a panel using the anti-slip pads or mount it on standard 1/2-inch PVC pipe for fixed-position monitoring.
Is EVO-Solar suitable for someone who only wants one instant reading?
It can display real-time SRI, but its strongest value is long-term recording, daily energy tracking, historical comparison, and CSV export. A basic handheld meter may be simpler for users who only need an occasional spot reading.
Related Measurement Guide
Plant & Outdoor Measurement Guide
EVO-Solar focuses on solar irradiance and accumulated solar energy. For a broader view of outdoor measurement, see how solar data relates to soil moisture, root-zone temperature and Daily Light Integral, and when each type of measurement is useful.
Measure Before You Commit
Use real solar data to make a better-informed decision.
Whether you are comparing panel locations, planning an RV or off-grid system, or investigating low output, EVO-Solar helps turn sunlight conditions into recorded data you can review.
Is EVO-Solar right for your project?
Tell us how you plan to monitor solar irradiance or daily solar energy. We can help you understand the measurement workflow, mounting options, app data, and CSV export.
View Purchase Options →Product information and technical questions are handled directly through EvoDevice.
Measurement Definitions
W/m² and kWh/m² are not the same measurement
Solar irradiance describes instantaneous solar power per unit area, while accumulated solar energy describes energy received over time.
Solar Irradiance · W/m² · Accumulated Solar Energy · kWh/m²
Open Measurement Glossary →
Plant & Outdoor Product Selection
Do you need DLI or solar irradiance?
EVO-Solar is intended for solar irradiance in W/m² and accumulated solar energy in kWh/m². Compare it with EVO-20 for Daily Light Integral and EVO10 when soil and root-zone monitoring are also needed.
Compare: EVO-Solar · EVO-20 · EVO10
Compare EvoDevice Products →