Key Takeaways
- Agrivoltaics combines solar energy generation with farming on the same parcel of land
- Elevated or spaced panel configurations allow crops, livestock, or pollinator habitats to coexist beneath and between arrays
- Systems can increase total land productivity by 60–70% compared to single-use farming or solar alone
- Panel shading reduces crop water consumption by 15–30% in arid climates
- Design considerations include panel height, row spacing, tilt angle, and crop compatibility
- Growing policy support in the US (USDA), EU, and Japan is accelerating commercial adoption
What Is Agrivoltaics?
Agrivoltaics (also called agrophotovoltaics or solar sharing) is the practice of co-locating solar photovoltaic panels and agricultural production on the same land. Rather than converting farmland exclusively to solar generation, agrivoltaic systems are designed so that crops, livestock, or pollinator habitats can thrive beneath and between the solar arrays.
The concept addresses a fundamental tension in renewable energy: utility-scale solar farms require large land areas, often competing with agricultural use. Agrivoltaics resolves this by making both uses compatible on a single parcel.
Agrivoltaic systems can increase total land-use efficiency by 60–70% compared to dedicating the same land to either agriculture or solar alone — a metric known as the Land Equivalent Ratio (LER).
How Agrivoltaics Works
Agrivoltaic systems require deliberate design choices that differ from standard ground-mount solar. Here’s the typical implementation process:
Site & Crop Assessment
Evaluate the land’s agricultural potential, soil quality, and existing crop or livestock operations. Identify which crops are shade-tolerant or benefit from reduced heat stress.
System Configuration Selection
Choose between elevated fixed-tilt, tracking systems, or vertically mounted bifacial panels based on crop requirements, machinery access, and energy targets.
Panel Height & Spacing Design
Set panel clearance height (typically 2.5–5 m) to accommodate farming equipment and crop growth. Increase inter-row spacing beyond standard ground-mount to allow adequate sunlight.
Structural Engineering
Design elevated mounting structures with wider footings and stronger supports to handle the increased height and wind loads while maintaining ground-level access.
Installation & Agricultural Integration
Install the array, then establish or continue agricultural operations beneath it. Coordinate planting schedules and irrigation systems with the panel layout.
Monitoring & Optimization
Track both energy output and crop yields. Adjust panel tilt or spacing seasonally if using tracking systems to balance light distribution between energy and agriculture.
LER = (Agrivoltaic Crop Yield ÷ Full-Sun Crop Yield) + (Agrivoltaic Energy ÷ Full-Density Solar Energy)An LER above 1.0 means the combined system produces more total output per hectare than either use alone. Most agrivoltaic projects achieve LERs between 1.3 and 1.7.
Types of Agrivoltaic Systems
Different configurations suit different agricultural activities and climate conditions.
Elevated Fixed-Tilt
Panels mounted 2.5–5 m above ground on elevated structures. Allows tractor access and provides partial shade for crops. Best for shade-tolerant vegetables, berries, and leafy greens.
Elevated Tracking
Single-axis trackers at elevated heights can dynamically adjust shading patterns throughout the day. Maximizes both energy yield and light distribution to crops below.
Vertical Bifacial
Vertically mounted bifacial panels in east-west rows. Minimal ground shading, full machinery access between rows. Peak generation in morning and evening aligns with grid demand.
Grazing-Compatible
Standard or slightly elevated ground-mount arrays with sheep or poultry grazing beneath. Animals provide natural vegetation management while gaining shelter from heat and precipitation.
Vertical bifacial agrivoltaic systems lose only 10–20% of annual energy compared to optimally tilted arrays, but they eliminate virtually all ground shading — making them ideal for high-value row crops that need full sun.
Key Metrics & Design Parameters
Designing agrivoltaic systems requires balancing energy output with agricultural productivity:
| Parameter | Standard Ground-Mount | Agrivoltaic System |
|---|---|---|
| Panel Height | 0.5–1.5 m | 2.5–5 m (elevated) |
| Inter-Row Spacing | 2–4 m | 4–10 m |
| Ground Coverage Ratio | 40–60% | 20–40% |
| Energy Density | 4–8 W/m² | 2–5 W/m² |
| Land Use | Solar only | Dual use (solar + agriculture) |
| LER | 1.0 | 1.3–1.7 |
Available Light (%) = (1 − Ground Coverage Ratio) × 100 + Diffuse Light PenetrationPractical Guidance
Agrivoltaics requires coordination between solar designers, agricultural specialists, and landowners. Here’s role-specific guidance:
- Increase inter-row spacing. Standard ground-mount spacing is too tight for farming equipment. Plan for minimum 6 m clearance between rows for tractor access in crop-based systems.
- Model reduced energy density. Wider spacing means fewer panels per hectare. Use solar design software to compare total project economics (energy revenue + crop revenue) against a standard layout.
- Consider bifacial modules. Bifacial panels capture reflected light from the ground and crops below, partially offsetting the energy loss from wider spacing.
- Run shadow analysis for crop zones. Map the shading footprint across seasons to ensure shade-sensitive crops receive adequate direct sunlight during their growing period.
- Plan for heavier foundations. Elevated structures at 3–5 m height require deeper footings and stronger posts than standard ground-mount. Factor in increased structural costs during quoting.
- Coordinate with farm operations. Schedule construction around planting and harvest seasons. Minimize soil compaction in growing areas during installation.
- Protect irrigation infrastructure. Map existing irrigation systems before trenching for electrical conduit. Route cables to avoid interference with agricultural water management.
- Use corrosion-resistant hardware. Agricultural environments involve fertilizers, herbicides, and moisture that accelerate corrosion. Specify marine-grade or hot-dip galvanized mounting hardware.
- Sell dual revenue streams. Landowners earn income from both energy production and continued agricultural output. Present combined financial projections using the generation and financial tool.
- Highlight USDA incentives. The USDA REAP program and various state agricultural preservation grants can reduce project costs by 25–50% for qualifying agrivoltaic installations.
- Address land-use concerns. Many rural communities resist solar farms that remove productive farmland. Agrivoltaics directly addresses this objection by preserving agricultural activity.
- Reference water savings data. In arid regions, panel shading reduces crop water needs by 15–30%. This water savings translates directly to lower operating costs for the farmer.
Design Agrivoltaic Layouts with Precision
SurgePV’s solar panel design software lets you model elevated arrays, analyze shading patterns, and optimize spacing for dual-use land projects.
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Real-World Examples
Small-Scale: 100 kW Berry Farm (Massachusetts)
A 100 kW elevated agrivoltaic system installed over a blueberry farm at 3.5 m panel height. The partial shade reduced heat stress during summer, increasing berry yield by 12% compared to the unshaded control plot. Water usage dropped 20%. The combined annual revenue from electricity ($14,000) and improved berry sales ($8,000 above baseline) produced a 6.2-year payback on the $130,000 system.
Medium-Scale: 1 MW Sheep Grazing (Colorado)
A 1 MW standard ground-mount array on a 7-acre sheep ranch. Panels are mounted at 1.2 m clearance — high enough for sheep to graze beneath. The flock eliminates mowing costs ($4,500/year) while producing wool and lamb revenue. The rancher receives a land lease payment of $1,200/acre/year from the solar developer, more than doubling the land’s agricultural income.
Large-Scale: 5 MW Vertical Bifacial (Germany)
A 5 MW vertical bifacial agrivoltaic installation using east-west oriented rows with 10 m spacing. Full-size farming equipment operates between rows with zero interference. Wheat yields reached 95% of the adjacent control field. Energy production was 80% of an equivalent tilted system but commanded a premium feed-in tariff rate under Germany’s agrivoltaic incentive program.
Impact on Solar Design
Agrivoltaic projects require different design assumptions than standard solar installations:
| Design Decision | Standard Solar Farm | Agrivoltaic System |
|---|---|---|
| Panel Height | Minimize for cost | Elevate for equipment clearance |
| Row Spacing | Minimize shading loss | Maximize crop light access |
| Module Selection | Highest efficiency per area | Bifacial or semi-transparent preferred |
| Tracking | Single-axis for energy | Can optimize for crop light needs |
| Foundations | Driven piles or ballast | Deeper piles for elevated structures |
| Financial Model | Energy revenue only | Energy + agricultural revenue combined |
When designing agrivoltaic systems, run your shadow analysis for each month of the growing season, not just annual averages. Crops have different light requirements during germination, growth, and fruiting stages.
Sources & References
- NREL — Agrivoltaics Research
- DOE — Farmer’s Guide to Going Solar
- IRENA — Agrivoltaics: Renewable Energy and Agriculture
Frequently Asked Questions
What crops grow best under solar panels?
Shade-tolerant crops perform best in agrivoltaic systems. Leafy greens (lettuce, spinach, kale), herbs (basil, cilantro), berries (blueberries, raspberries), and root vegetables (potatoes, radishes) all thrive with partial shading. Some crops like lettuce actually produce higher yields under panels because the shade reduces heat stress and bolting during summer months.
How much does an agrivoltaic system cost compared to standard solar?
Agrivoltaic systems typically cost 10–30% more than standard ground-mount solar due to elevated mounting structures, deeper foundations, and wider spacing. However, the dual revenue from energy and agriculture, combined with available USDA grants and state agricultural incentives, often result in comparable or better overall project economics.
Do solar panels reduce crop water requirements?
Yes. Research from the University of Arizona found that panel shading reduces soil evaporation and plant transpiration, cutting water consumption by 15–30% depending on climate and crop type. In arid regions like the American Southwest, this water savings is a major economic benefit for farmers alongside the energy production.
Can agrivoltaic systems use standard solar design software?
Yes, but you need software that supports custom row spacing, elevated mounting configurations, and detailed shading analysis. Solar design software like SurgePV allows you to model non-standard array layouts, run shadow simulations across seasons, and generate accurate production estimates for agrivoltaic configurations.
Is agrivoltaics eligible for the federal solar tax credit?
Yes. Agrivoltaic systems qualify for the federal Investment Tax Credit (ITC) just like any other solar installation. Under the Inflation Reduction Act, they may also qualify for bonus adders — including up to 10% extra for projects in energy communities and 10% for domestic content. Additionally, USDA Rural Energy for America Program (REAP) grants can cover up to 50% of project costs.
About the Contributors
Content Head · SurgePV
Rainer Neumann is Content Head at SurgePV and a solar PV engineer with 10+ years of experience designing commercial and utility-scale systems across Europe and MENA. He has delivered 500+ installations, tested 15+ solar design software platforms firsthand, and specialises in shading analysis, string sizing, and international electrical code compliance.
CEO & Co-Founder · SurgePV
Keyur Rakholiya is CEO & Co-Founder of SurgePV and Founder of Heaven Green Energy Limited, where he has delivered over 1 GW of solar projects across commercial, utility, and rooftop sectors in India. With 10+ years in the solar industry, he has managed 800+ project deliveries, evaluated 20+ solar design platforms firsthand, and led engineering teams of 50+ people.