Accelerating solar deployment without intensifying competition for agricultural land is a major challenge for land-constrained energy transitions. Although agrivoltaic (Agri-PV) research has advanced rapidly, spatial assessments and crop-response studies remain largely disconnected, limiting the ability to identify not only where Agri-PV can be deployed but also which agricultural systems are compatible and how much solar capacity they can support. Here, we develop an integrated national-to-district Agri-PV planning framework for India combining Geographic Information Systems (GIS), Multi-Criteria Decision-Making (MCDM), and the Analytic Hierarchy Process (AHP). At 500 m resolution, an Agrivoltaics Suitability Index (ASI) integrates biophysical, technical, agricultural, infrastructural, socio-economic, and environmental criteria. We further synthesize experimental evidence for 154 crop species to incorporate crop-specific shade compatibility and translate spatial suitability into configuration-specific installable solar capacity. We identify 19.59 million hectares (Mha) of agricultural land suitable for Agri-PV, including 12.85 Mha classified as highly suitable. Single- and double/triple-cropped lands account for the largest deployment opportunity, with national installable capacity estimated at 9,278–12,207 GWp under the assessed configurations. Rajasthan, Maharashtra, Andhra Pradesh, Karnataka, Telangana, and Madhya Pradesh emerge as priority states, while district-level analysis reveals substantial spatial heterogeneity within states. The crop synthesis shows that several vegetables, legumes, berries, and medicinal crops can tolerate moderate photovoltaic shading, although responses vary substantially among species. By linking spatial suitability, crop compatibility, agricultural context, infrastructure access, socio-economic feasibility, and energy potential, this study provides an integrated decision-support framework for strategically scaling Agri-PV while limiting agricultural land-use conflicts.