Rooftop Solar: The Smart, Localized Path — and Why Utility-Scale Development on Prime Farmland Must Be Restrained
Rooftop Solar: The Smart, Localized Path — and Why Utility-Scale Development on Prime Farmland Must Be Restrained
Decades ago, the promise of solar was clear: integrate passive solar design into buildings, add solar thermal systems for hot water and space heating, and place photovoltaic panels directly on rooftops where the energy was needed. That vision was practical, resilient, and respectful of land. It never included covering millions of acres of America’s best farmland with industrial-scale arrays.
Yet today, investor-owned utilities (IOUs) across the country — granted legal monopolies precisely to deliver reliable, affordable, and dependable electricity to the public — are pursuing the opposite path. They are signing power-purchase agreements for utility-scale solar at rock-bottom wholesale prices (often in the 2–3 ¢/kWh range in earlier contracts) while locating projects hundreds of miles from load centers. The result? Daytime-only generation that still requires massive new transmission lines, substations, and transformers — costs ultimately passed on to ratepayers — while consumers see virtually no reduction in their retail bills.
The Proven Strengths of Rooftop and Distributed Solar
Rooftop and distributed solar turn underutilized urban and suburban surfaces into productive assets. No new land is cleared. Electricity is generated at the point of use, slashing 5–7% national transmission and distribution losses and easing peak congestion. Paired with storage, these systems deliver true resilience through microgrids and islanding during outages.
Homeowners and businesses capture direct savings on their retail-rate bills, gain energy independence, and increase property values. Even utilities benefit: distributed solar has already deferred billions in generation, transmission, and distribution upgrades. Independent economist Richard McCann’s full 2024 analysis — grounded in the utilities’ own CPUC data — shows California rooftop solar delivered a net benefit of approximately $1.5 billion to all ratepayers that year through avoided infrastructure alone.
The High Cost of Utility-Scale Solar on Prime Farmland
Utility-scale solar on productive agricultural land exacts a steep and largely irreversible price. In California’s San Joaquin Valley alone, one current plan proposes converting up to 136,000 acres of water-stressed but still-prime farmland into solar and battery facilities. Similar conversions are underway in the Imperial Valley and elsewhere. Across the country, thousands of acres of high-value cropland are being removed from food production every year.
This is not “unused” space. These fields grow food, support rural jobs, and — through living plants — actively sequester atmospheric CO₂ and release oxygen. Photovoltaic modules can displace future emissions, but they cannot perform photosynthesis or restore soil carbon the way healthy farmland does.
Worse, these remote projects deliver power only when the sun shines. They still require utilities to maintain or expand gas peakers, storage, and — most expensively — new high-voltage transmission. California’s latest transmission plan already calls for $4.8 billion in new projects largely to integrate distant renewables. Ratepayers foot the bill for that infrastructure, yet retail electricity prices remain stubbornly high and continue to rise.
In short: IOUs secure low-cost contracts that improve their procurement numbers and expand their regulated rate base, but the public receives neither meaningfully lower bills nor greater reliability. The monopoly bargain — reliable and affordable service in exchange for exclusive service territory — is not being honored when prime farmland is sacrificed for marginal system-wide gains.
Toward a Smarter, Land-Respecting Policy
We do not need to reject all utility-scale solar. Projects on brownfields, degraded lands, or floating installations on reservoirs can still play a supporting role. But the default must shift dramatically:
Prioritize rooftop, carport, warehouse, and parking-lot solar first — the true “unused space” solution.
Require exhaustion of distributed potential in load centers before approving farmland conversions.
Value avoided transmission and distribution costs accurately in rate cases.
Streamline permitting and incentives for distributed systems while tightening environmental and agricultural reviews for greenfield utility-scale projects.
States and regulators that have aggressively promoted rooftop and community solar have achieved strong clean-energy gains without the land-use conflicts now plaguing rural communities.
The Future Still Shines Brightest from the Rooftops
The original solar vision — distributed, local, and land-conscious — was right. Rooftop and built-environment solar delivers cleaner power, stronger grids, direct consumer benefits, and preserved farmland and carbon sinks. Utility-scale development on prime agricultural land, by contrast, trades food security and natural sequestration for distant, intermittent kilowatts and higher system costs that never fully reach the customer’s bill.
It is time to return to first principles. Policymakers, utilities, and developers should treat distributed solar as the core strategy and treat utility-scale solar on productive farmland as the last resort — not the default. Only then will the energy transition truly serve the public interest rather than corporate rate-base expansion.
1. M.Cubed / Richard McCann California Rooftop Solar Analysis (Core Study)
Main Report Page (Nov 2024, updated): How California’s Rooftop Solar Customers Benefit Other Ratepayers – $1.5 Billion in 2024 https://mcubedecon.com/2024/11/14/how-californias-rooftop-solar-customers-benefit-other-ratepayers-financially-to-the-tune-of-1-5-billion/
Full Corrected PDF: Direct download of the detailed workpapers https://mcubedecon.com/wp-content/uploads/2025/01/how-rooftop-solar-customers-benefit-other-ratepayers-financially-final-corrected.pdf
2. Transmission & Distribution Losses
EIA Official Data: U.S. electricity T&D losses average ~5% (2018–2022) https://www.eia.gov/tools/faqs/faq.php?id=105&t=3
3. Utility-Scale vs. Rooftop Solar Costs (LCOE)
Lazard 2025 LCOE+ Report: Utility-scale solar ~$38–78/MWh (unsubsidized); residential/distributed much higher https://www.lazard.com/media/uounhon4/lazards-lcoeplus-june-2025.pdf
Lawrence Berkeley Lab Utility-Scale Solar 2025 Update https://emp.lbl.gov/sites/default/files/2025-10/Utility%20Scale%20Solar%202025%20Edition%20Slides.pdf
4. Land Use & Farmland Impacts in California
California Utility-Scale Solar Land Use Impacts Study (SJSU, 2025): Conversion of shrublands, agriculture, and habitat https://scholarworks.sjsu.edu/etd_theses/5695/
PPIC Report on Solar & Groundwater in San Joaquin Valley: Farmland conversion pressures https://www.ppic.org/publication/solar-energy-and-groundwater-in-the-san-joaquin-valley/
5. Carbon Sequestration: Plants vs. Solar Panels
Columbia Law School / Climate Law Blog (2022, still widely cited): Solar displaces far more CO₂ per acre than forests sequester (175–198 metric tons/acre/year avoided vs. ~0.84 tons sequestered) https://blogs.law.columbia.edu/climatechange/2022/10/25/response-to-the-new-york-times-essay-are-there-better-places-to-put-large-solar-farms-than-these-forests/
Additional Context on Soil Carbon & Agrivoltaics https://www.siliconranch.com/stories/carbon-sequestration-how-regenerative-energy-makes-solar-do-more/
6. Counterpoints & Balance
Severin Borenstein (UC Berkeley) Response to McCann (Jan 2025): Critiques the net-benefit calculation https://faculty.haas.berkeley.edu/borenste/ResponseMcCann250127.pdf
CPUC Public Advocates Office Cost-Shift Fact Sheet (for comparison) https://www.publicadvocates.cpuc.ca.gov/-/media/cal-advocates-website/files/press-room/reports-and-analyses/240822-public-advocates-office-2024-nem-cost-shift-fact-sheet.pdf
Curtis Anthony Neil/Grok 4.0/ LibreOffice. May 13th. 2026 AD.
Bakersfield, California, USA, North America, Planet Earth (Terra), the third planet from the Sun (Sol), Solar System, Orion Arm, Milky Way Galaxy
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