Written by Michael Torres a Chartered Financial Analyst with 11 years of experience in renewable energy project finance. He has structured solar financing and interconnection strategy for more than 200 agricultural projects across the United States, including systems in states that have transitioned from full net metering to reduced export compensation. He holds an M.B.A. in Finance from the University of Chicago Booth School of Business and a B.S. in Agricultural Economics from Texas A&M University.
The Problem
The farm solar industry has a quiet problem, and it lives in the spreadsheet.
Nearly every ROI calculator, installer proposal, and payback estimate assumes a simple equation: every kilowatt-hour your solar array produces is worth your full retail electricity rate. Produce 375,000 kWh, avoid $0.12 per kWh, save $45,000 a year.
That equation was reasonable when net metering was universal. It is no longer reasonable in 2026.
A growing number of states have restructured how they compensate solar customers for exported electricity. California’s transition away from full retail net metering is the most widely discussed example, but Indiana, Idaho, and several other states have made comparable changes. The pattern is consistent: electricity you consume on-site is still worth your full retail rate, but electricity you export to the grid is now compensated at a much lower rate — often the utility’s “avoided cost,” which can be a third or less of retail.
Here is why this matters enormously for farms specifically.
A commercial office building might self-consume 30% to 50% of its solar production, exporting the rest at midday when the building is empty. Under a reduced export rate, that building loses a lot of value. A farm is different: irrigation pumps, ventilation fans, refrigeration compressors, and grain dryers all run during peak solar hours. Farms typically self-consume 70% to 90% of their production.
So the good news is that farms are structurally protected from the worst effects of export rate cuts. The bad news is that most farm solar proposals were never designed around that reality. Installers sized systems using generic commercial assumptions, and farmers signed contracts expecting retail-rate credit on every kilowatt-hour.
The result is a payback projection that does not survive contact with the actual utility bill. This article fixes the math.
The Solution: Understand Which of Four Export Models Applies to You
Export compensation in 2026 falls into four categories. Before you size a system, you need to know which one your utility uses.
Model 1 — Full Retail Net Metering. Every exported kilowatt-hour is credited at your full retail rate, typically banked and applied against future consumption. This is the most favorable model for solar owners. It still exists in a number of states, particularly in the Southeast and parts of the Midwest, though it is under pressure nearly everywhere.
Model 2 — Reduced Net Metering. Exports are credited at retail but at a reduced percentage, or retail credit is limited to a portion of consumption with the remainder compensated at a lower rate. This is a middle-ground model that has emerged in several states as a compromise.
Model 3 — Avoided Cost / Export Compensation. Exports are compensated at the utility’s avoided cost rate, which reflects what the utility would have paid to generate or purchase that power elsewhere. This rate is typically $0.03 to $0.06 per kWh, compared to retail rates of $0.10 to $0.18 per kWh in most agricultural service territories. This is where California now sits for most customers.
Model 4 — No Export Compensation. Some utilities do not compensate exports at all, or require a separate export meter with zero credit. In these territories, any electricity you do not consume on-site is simply lost value.
| Export Model | Typical Export Credit | Farm Impact | Design Response |
|---|---|---|---|
| Full retail net metering | 100% of retail rate | Minimal — exports retain full value | Standard sizing, maximize production |
| Reduced net metering | 50% – 90% of retail | Moderate — partial value loss | Slight reduction in array size |
| Avoided cost / export compensation | $0.03 – $0.06/kWh | Significant — exports worth 25% – 50% of retail | Size to self‑consumption, add storage |
| No export compensation | $0.00 | Severe — exports are wasted | Strict self‑consumption sizing |
The Design Principle: Size to Self-Consumption, Not to Production
This is the single most important strategic shift of 2026. In the full-net-metering era, the goal was to maximize production, because every kilowatt-hour had equal value whether consumed or exported. In the reduced-export era, the goal is to match production to on-site consumption as closely as possible, because that is where the value is.
For most farms, this means the optimal array is smaller than the one you would have installed under full net metering. Oversizing an array under an avoided-cost export model means you are building generation capacity that produces $0.04 electricity — a poor investment compared to the $0.12 electricity you get from self-consumed production.
The second strategic shift is storage. If your utility pays almost nothing for exports, then shifting midday production to evening use — instead of exporting and buying back — becomes financially valuable. Battery storage, which was often marginal under full net metering, becomes economically justified under avoided-cost export pricing.
The Numbers Behind the Success: Recalculating a 250 kW System Under Three Export Scenarios
System assumptions:
- System size: 250 kW
- Installed cost: $1.60 per watt
- Gross system cost: $400,000
- Net cost after 30% ITC: $280,000
- Annual production: 375,000 kWh
- Retail rate: $0.12 per kWh
- Avoided cost rate: $0.04 per kWh
- Analysis period: 25 years (flat rates for comparability)
Scenario A — Full Retail Net Metering (100% of production credited at $0.12)
| Item | Calculation | Value |
|---|---|---|
| Total production credited | 375,000 kWh × $0.12 | $45,000 |
| Annual savings | — | $45,000 |
| Simple payback | $280,000 ÷ $45,000 | 6.2 years |
| 25‑year gross savings | $45,000 × 25 | $1,125,000 |
| 25‑year net return | $1,125,000 – $280,000 | $845,000 |
Scenario B — 80% Self-Consumption with Avoided Cost Exports (current farm-typical profile)
| Item | Calculation | Value |
|---|---|---|
| On-site consumption | 300,000 kWh × $0.12 | $36,000 |
| Exported production | 75,000 kWh × $0.04 | $3,000 |
| Annual savings | — | $39,000 |
| Simple payback | $280,000 ÷ $39,000 | 7.2 years |
| 25‑year gross savings | $39,000 × 25 | $975,000 |
| 25‑year net return | $975,000 – $280,000 | $695,000 |
Scenario C — 50% Self-Consumption with Avoided Cost Exports (poorly designed system)
| Item | Calculation | Value |
|---|---|---|
| On-site consumption | 187,500 kWh × $0.12 | $22,500 |
| Exported production | 187,500 kWh × $0.04 | $7,500 |
| Annual savings | — | $30,000 |
| Simple payback | $280,000 ÷ $30,000 | 9.3 years |
| 25‑year gross savings | $30,000 × 25 | $750,000 |
| 25‑year net return | $750,000 – $280,000 | $470,000 |
The critical finding: The difference between Scenario B and Scenario C is $225,000 over 25 years — and the only variable is self-consumption rate. Same equipment, same cost, same sun. The difference is system design and load matching.
Expert Tips
1. Pull your 15-minute interval data before you size anything. Your utility can provide interval consumption data — usually free, sometimes for a small fee. That data tells you exactly how much electricity you consume during solar production hours. Without it, you are guessing at your self-consumption rate, and guessing is how Scenario C happens.
2. Ask the interconnection question before you sign a quote, not after. The single most important question to ask any installer is: “What is the current export compensation rate under my utility’s tariff, and how does this system’s size interact with it?” An installer who cannot answer that question precisely is not qualified to design your system.
3. Under avoided-cost export models, a smaller system often produces a better return. Resist the instinct to maximize nameplate capacity. Model three sizes — 70%, 85%, and 100% of your typical recommendation — and compare net return, not gross production. You will often find the smaller system wins.
**4. Battery storage becomes justified when export value drops below about $0.06/kWh.** The rule of thumb: if your export compensation is less than half your retail rate, run the battery math. Storing a kilowatt-hour that would have earned $0.04 and using it to avoid a $0.12 purchase is worth $0.08 per cycle — which, over thousands of cycles, can justify a battery investment that made no sense under full net metering.
5. Watch for demand charge interaction. Some agricultural tariffs include demand charges based on your peak 15-minute usage. Solar can reduce demand charges if it shaves your peak — but only if the array is sized and oriented to produce during your peak demand window. This can be worth more than energy savings in some rate structures, and it is completely independent of the export question.
6. Re-run your numbers if your state is in a net metering proceeding. Regulatory proceedings move slowly and then suddenly. If your state utility commission has an open docket on net metering or export compensation, there is a real possibility the rules change before your system is placed in service. Build a downside scenario into your decision.
Conclusion
Net metering is no longer a constant. It is a variable, and in 2026 it is a declining one in many jurisdictions. But the collapse of full retail net metering does not make farm solar a bad investment — it makes system design more important than it used to be.
The reason is structural: farms self-consume 70% to 90% of their production because their loads run during solar hours. That gives farms a genuine advantage over commercial customers under reduced export models. The farms that capture that advantage are the ones that size to self-consumption, model their actual interval data, and consider storage when export rates fall far enough below retail.
The farms that lose are the ones that accept a generic commercial sizing proposal built for a 50% self-consumption assumption. The gap between the two outcomes, on a 250 kW system, is roughly $225,000 over 25 years.
Before you sign anything, answer one question: what does my utility actually pay for exported electricity in 2026? Everything else follows from that number.
Frequently Asked Questions
Q: Does net metering still exist for farms?
A: Full retail net metering still exists in a number of states, though it is under pressure nearly everywhere and has been replaced or reduced in others, including California, Indiana, and Idaho. The key distinction is between on-site consumption, which is always worth your full retail rate because it offsets a purchase you would otherwise make, and exported electricity, which may be compensated at a much lower avoided-cost rate. Farms typically self-consume 70% to 90% of production, so they are less exposed to export rate cuts than commercial customers — but the system must be designed around that reality.
Q: What happens to excess solar power on a farm?
A: It depends entirely on your utility’s tariff. Under full net metering, excess power is credited at your retail rate and typically banked for future use. Under reduced net metering, it is credited at a lower percentage. Under avoided-cost compensation, it earns roughly $0.03 to $0.06 per kWh. Under some tariffs, excess power earns no credit at all. The practical response is to minimize excess production by sizing the array to your on-site consumption and, where justified, adding battery storage to shift production to evening use rather than exporting it.
Q: Is solar still worth it without net metering?
A: Yes, for most farms — but the design changes. Without full net metering, the value of solar comes almost entirely from self-consumed electricity, which is worth your full retail rate. A farm with a high self-consumption rate (70% to 90%) still achieves payback in roughly 7 to 9 years and a strong 25-year return. The mistake to avoid is oversizing the array, which produces low-value export electricity. A smaller, self-consumption-matched system with optional battery storage generally outperforms a larger system under avoided-cost export rules.
Related Articles
- How to Calculate Your Farm Solar ROI Before Spending a Dollar — The financial framework, now updated for export rate reality.
- Farm Solar Tax Credits 2026: ITC, REAP & MACRS Stacking Guide — The federal incentives that are unaffected by export rate changes.
© 2026 Farm Solar Guide. All data sourced from ASAE water system standards, manufacturer cold-temperature specifications, EIA fuel price projections, and documented US farm operations. Last verified: October 5, 2026