Farm Solar: Buy, Lease, or PPA? The 2026 25-Year Cash Flow Math

Three farmers comparing solar financing options — cash purchase, loan, and PPA — in front of a farm solar array.

You have decided to go solar. Now comes the question that stops most farmers cold: how do I pay for it? Cash purchase, solar loan, and PPA produce radically different 25-year outcomes. The wrong choice can cost you hundreds of thousands of dollars. Farms consume 70% to 90% of their solar production on-site — which means a PPA designed for a commercial customer will systematically undervalue your electricity. This article runs the full 25-year cash flow math for all three options on a 250 kW system, and explains why a solar loan captures the 30% ITC while a PPA forfeits it entirely.

Farm Solar Tax Credits 2026: ITC, REAP & MACRS Stacking Guide

Farm office desk with solar ROI spreadsheet on laptop, USDA REAP forms, and calculator, with barn roof solar panels visible through the window.

The 30% federal solar tax credit expires on December 31, 2027. On a $500,000 farm system, missing that deadline costs you $150,000. But the incentive landscape in 2026 is confusing — REAP windows have been paused, bonus depreciation is phasing down, and the “placed in service” rule means signing a contract is not enough. This article gives you the exact framework to stack the 30% ITC, a USDA REAP grant, and MACRS depreciation to reduce the net cost of a farm solar system by up to 95%. Includes a worked $160,000 example with a sub-one-year payback.

Solar Pump Warranties: What the Fine Print Actually Means (And How to Protect Your Investment)

a damaged impeller and a red "WARRANTY VOID" stamp.

You’ve sized your system, chosen your pump, and are ready to invest $5,000‑15,000 in solar irrigation. But do you know what your warranty actually covers? Manufacturers promise 2‑5 years of protection, but the exclusions can leave you with a $2,000 repair bill. This 2026 guide breaks down solar pump warranties: types of coverage, what voids your warranty, how to file a claim, and what the top brands (Grundfos, Lorentz, Franklin Electric, Sun Pumps) actually offer.