Quick answer
Co-location of PV generation with agricultural activity on the same land, requiring site-specific assessment of agricultural function, energy, access and applicable requirements.
What Is Agrivoltaics?
Answer: Agrivoltaics combines PV generation with agricultural activity on the same land, beneath or between arrays. It can involve crops or livestock; some research programs also include pollinator habitat. A workable design must maintain the intended agricultural function as well as produce electricity. Crop response, water use, access, energy yield and eligibility depend on the location, configuration and management rather than universal benefits.
DOE’s farmer guide describes co-location including crop production, grazing and pollinator habitat. Legal or incentive definitions may be narrower than a research program’s definition. Simply labeling a solar farm “agrivoltaic” does not establish continued food production or local approval.
Match the Layout to Farming
Preserve the farming requirements before selecting a layout: crop rotation, planting/harvest operations, machinery dimensions and turning paths, irrigation, drainage, livestock behavior and seasonal labor access. Then assess energy and agricultural outcomes together.
| Configuration | What to investigate |
|---|---|
| Elevated fixed arrays | Clearance through the working envelope, foundations, light distribution and structural loading |
| Trackers | Moving clearance, approved control modes and agricultural access throughout operation |
| Vertical bifacial rows | Row direction, seasonal shadow pattern, machinery movement and rear-side irradiance |
| Grazing-compatible arrays | Species, fencing, cable protection, welfare and vegetation management |
There is no universal panel height or six-meter tractor clearance. Actual equipment, terrain, moving structures and safety requirements govern. Greater height or spacing can change structural costs and capacity per hectare; neither a tracker nor bifacial modules guarantees the best combined outcome.
Ground coverage ratio is not a crop-light formula. Crop exposure also depends on solar position, panel geometry/movement, diffuse radiation and season. Do not estimate available light as “one minus coverage plus diffuse light.” Agricultural light metrics and growing-stage requirements need appropriate analysis with an agronomist.
A Documented Trial Is Not a Universal Gain
Fraunhofer ISE’s 2017 APV-Resola report describes a German demonstration testing wheat, potatoes, celeriac and clover grass. It reported first-harvest crop reductions of 5.3% for clover grass and 18–19% for the other listed crops, alongside a combined land-use benefit.
This is evidence that a positive combined land-use result can coexist with reduced crop yield. It is not a forecast for another crop, climate or growing season, or a guarantee that shade increases harvests. Preserve comparable control plots and multiple seasons when evaluating a site.
Water demand likewise needs measurement at the actual agricultural boundary. Reduced evaporation or heat stress does not automatically become a fixed irrigation saving or lower farm operating cost.
Land Equivalent Ratio with Matched References
For a declared crop-and-electricity comparison:
LER = (dual-use crop output per hectare ÷ crop-only reference output per hectare) + (dual-use electricity per hectare ÷ PV-only reference electricity per hectare).
As an independent hypothetical, assume the same one-hectare area and reporting year:
- Crop-only reference: 10 tonnes; dual-use crop: 8 tonnes.
- PV-only reference: 1,000 MWh; dual-use electricity: 700 MWh.
- LER = 8 ÷ 10 + 700 ÷ 1,000 = 0.8 + 0.7 = 1.5.
Under those stated productivity assumptions, separate production would need 0.8 ha of reference cropping plus 0.7 ha of reference PV, totaling 1.5 ha, to match the one-hectare dual-use outputs. The dual-use crop output is still 20% lower and electricity 30% lower than their individual references on one hectare.
LER is dimensionless: it does not add tonnes to MWh or prove 50% higher crop yield, profit or physical energy. The conventional relative-land-use formula is also discussed in Fraunhofer’s agrivoltaics guideline. Reference suitability, crop quality, year/weather and management matter. Different mixed-output or habitat projects may need different evaluation metrics.
Planning, Construction and Monitoring
A useful handoff includes the agreed agricultural operation, layout and working clearances, seasonal crop-light analysis, energy model, soil/drainage requirements and an access/maintenance plan. Construction timing, irrigation mapping and soil-compaction controls should be coordinated with the farmer. Engineers must assess the actual structural and electrical design; generic deeper footings or “marine-grade” hardware are not complete specifications.
Track agricultural output/quality, irrigation and relevant microclimate alongside electricity and downtime. Record management changes and compare against suitable reference conditions. Annual kWh alone cannot show whether farming remains viable.
Ownership and contracts matter: separate crop sales, electricity sales, lease income, costs and responsible parties rather than attributing every revenue stream to the same landowner. Use actual grid-access, export and tariff conditions; morning/evening generation does not automatically receive a premium tariff.
The project name alone does not establish zoning permission, agricultural-land status, tax-credit eligibility or a grant percentage. Check the current jurisdiction and program requirements with the responsible advisers before quoting an incentive. Do not carry a general 30%/50% claim into an unverified application.
When evaluating SurgePV, ask which geometry, shade and PV outputs the workflow supports, and identify the separate agronomic, structural and financial analysis needed. A shadow map does not itself predict crop yield.
Common Questions
Which crops grow best beneath panels?
It depends on crop, climate, season, light distribution and management. Trial evidence from one location is insufficient to promise another site’s harvest.
Does agrivoltaics always reduce water use?
No universal reduction follows from the layout. Measure relevant soil, crop and irrigation outcomes under matched conditions.
Is an elevated system always required?
No. Configuration depends on the intended agricultural operation, access and applicable definition.
Does a higher LER mean higher profit?
No. LER compares relative land productivity; capital costs, operating costs, crop value and electricity arrangements need separate evaluation.
Can standard PV software complete the assessment?
It may support specified PV geometry and energy tasks. Crop-light, agricultural response, structural review and eligibility need their own evidence and methods.
Related Glossary Terms
About the Contributors
Editorial contributor · SurgePV
Rainer Neumann is credited as an editorial contributor on SurgePV content. This profile does not assert engineering credentials, project totals, software-testing experience, education, speaking engagements, or media citations because independent verification evidence is not retained in the publication record.
CEO & Co-Founder · SurgePV
Keyur Rakholiya is identified by SurgePV as its CEO and a company co-founder. His SurgePV author page lists only role information that can be tied to the public profile below; credentials, project totals, testing claims, media appearances, and speaking engagements are not asserted without retained evidence.
