Sentinel-2 vs PlanetScope for Monitoring

Updated 2026-11-02 · 4 min read · By the akar.earth specialist team

Sentinel-2 vs PlanetScope for forest and EUDR monitoring in Indonesia: resolution, revisit, cloud, cost model, licensing and which to use for carbon projects.

Use Sentinel-2 as your default for landscape-scale forest, ARR and EUDR monitoring in Indonesia: it is free, well documented, has 10 m bands with rich spectral information and an archive that covers the EUDR cut-off date. Add PlanetScope when you need near-daily revisit to beat cloud cover, about 3 m detail for small smallholder plots or narrow clearings, or fast change alerts. Most serious monitoring systems use both, plus radar.

Side-by-side comparison

Key differences

Resolution versus spectral depth. PlanetScope sees smaller objects. Sentinel-2 sees more of the spectrum. The red-edge and shortwave infrared bands on Sentinel-2 help separate vegetation types, detect moisture and degradation, and feed biomass models. PlanetScope’s finer pixels help delineate small coffee or cocoa plots, boundary trees and narrow logging roads.

Revisit and cloud. Indonesia’s persistent cloud cover is the main practical constraint. Five-day revisit can leave weeks without a clear view, especially in the wet season over Kalimantan and Papua. Daily PlanetScope captures increase the chance of a clear pixel. Radar (Sentinel-1) works through cloud and complements both. See deforestation alerts.

Reproducibility. Because Sentinel-2 is open, a VVB, buyer or regulator can reproduce an analysis exactly. That matters for VM0047’s area-based approach, where project and control plots must be tracked consistently over a crediting period, and for EUDR evidence that may be questioned years later.

Calibration. Sentinel-2 is a reference-quality sensor. PlanetScope’s constellation needs cross-sensor harmonisation for time series. For long-term carbon accounting, Sentinel-2 is usually the anchor.

When each fits in Indonesia and Southeast Asia

• ARR monitoring under VM0047: Sentinel-2 for the vegetation index time series in project and control areas; PlanetScope to check planting progress or disturbance. See Sentinel-2 for forest monitoring.
• REDD+ forest change: Sentinel-2 plus Sentinel-1 for consistent change detection; PlanetScope to confirm small clearings.
• EUDR for smallholder coffee, cocoa, rubber and palm: Sentinel-2 to screen polygons against the 31 December 2020 cut-off; higher resolution to check edge cases. Plots over 4 ha need polygons. See satellite verification for EUDR.
• Mangroves: both map extent; neither sees soil carbon.

Neither replaces field plots. Satellite metrics need ground calibration; see field plots vs remote sensing.

Cost and effort considerations

• Sentinel-2: no data cost, but processing (cloud masking, compositing, classification) takes engineering time and compute.
• PlanetScope: licence cost depends on area, time span and product; get a quote for your area of interest. Processing effort is similar or higher due to data volume.
• Derived products: some vendors super-resolve Sentinel-2 or sell processed time series priced per area. Compare these with raw licences.
• Audit: if auditors cannot access licensed imagery, provide derived outputs and methods documentation.

Our dMRV implementation service builds pipelines that combine open and commercial imagery with field data, and the akar dMRV platform presents the results.

Questions to ask before you choose

• What is the smallest feature you must detect? Plot size and clearing width decide the resolution you need.
• How fast must you react? Weekly or daily alerts favour PlanetScope plus radar; annual carbon accounting favours Sentinel-2 time series.
• Who must reproduce your results? If auditors, buyers or EU authorities may re-check years later, open data simplifies that.
• How long is the monitoring commitment? Carbon crediting periods run for decades. Sensor continuity, archive access and licence terms over that span matter as much as today’s specifications.

Common misconceptions

• “Higher resolution is always better.” Not for biomass or vegetation change, where spectral information and calibration matter more.
• “Daily imagery means daily clear views.” Cloud still blocks many days in the tropics.
• “Sentinel-2 cannot see smallholder plots.” It can for most plots above a few tenths of a hectare; very small or mixed plots benefit from finer imagery.
• “Satellites alone prove deforestation-free status.” EUDR also requires legality and a due diligence statement.

More in the dMRV hub.