7  Archetypal Forms

Certain designs keep turning up. A farmer’s flock under panels, a prairie strip in a wet draw, a retired irrigated field: the same few arrangements appear on ground that has nothing else in common. They recur because the pressures on a project are never evenly matched. Cost and financing and energy yield push hardest nearly everywhere, and where nothing pushes back, the result is the same array anywhere in the country. Where something does push back, and keeps pushing through permitting and every round of cost cutting, the design settles into a shape that answers it. An archetype is one of those settled shapes. The names describe patterns found in built projects, given after the fact, and a pattern can disappear when the policy or the market that let a pressure win is taken away. Some recur, some rest on one documented project so far, and one is still a pilot. The table says which, and the Archetype Catalog lists what has been found.

Figure 7.1: How an archetype emerges. Position along the bottom is one way the nine design pressures can come out; height is the conflict left standing. The low spots that keep collecting projects are archetypes, six of them named here with their codes. The dashed profile is an arid region. The terrain is a schematic, not a measurement.

7.1 Thirteen forms at a glance

Every archetype carries a code that combines three earlier chapters: its zone on the scale transect, its position on the farming axis, and the lever that leads its restorative work. So A1 scale · S1 farming · ownership-led restoration is a farmstead array on ground the farm’s own animals keep using, made restorative by who owns it.

Table 7.1: The thirteen archetypes, their codes, how established each is, and one built example of each, from the smallest zone each reaches to the largest. The six featured below are in bold. The Archetype Catalog describes all thirteen, with further examples and sources.

Form	Scale	Farming axis	Restorative work	Built so far	A built example
Barnyard Shelter Solar	A1	S1	ownership-led	one so far	Morris dairy, Minnesota
Marginal Land Solar	A1–A3	S4, or S1 where stock stays on	siting-led	one so far	Cozy Cove Farm, Alabama
Regenerative Solar Grazing	A2–A5	S1–S2	management-led	recurring	Aurora Solar, Minnesota
Perennial Crop Canopy	A2–A4	S1	structure-led	recurring	Babberich raspberries, Netherlands
Solar Fencerows	A2–A4	S1	structure-led	recurring	Donaueschingen-Aasen, Germany
Vegetable Agrivoltaics	A2–A3	S1	structure-led	recurring	Jack’s Solar Garden, Colorado
Pivot-Corner Recharge	A2–A3	S4	siting-led	pilot	Kansas Geological Survey demonstration
Solar Prairie Strips	A3	S5	siting-led	one so far	Ramsey Renewable Station, Minnesota
Pollinator Meadow Solar	A3	S3, or S2 where hives are kept	scale-led	recurring	SolarWise garden, Minnesota
Farm-Load Microgrid	A3–A4	S3–S4	siting-led	one so far	Producers Rice Mill, Arkansas
Brightfield	A3–A5	S4, or S0 where the ground layer is grazed	siting-led	recurring	Shrewsbury landfill, Massachusetts
Restored-Grassland Solar	A4–A5	S3	management-led	recurring	Enel sites, southern Minnesota
Retired-Irrigation Solar	A4–A5	S5	contract-led	recurring	Westlands, California

Figure 7.2: Where the archetypes sit. Each form is drawn across the zones it recurs at, in the row of its farming-axis position, and colored by the lever that leads its restorative work. Filled bars are the six featured forms, outlined bars the seven sketched ones, and dashed bars a position a form takes only in some cases. Hatched cells are combinations that rarely get built; a clear cell with no bar is possible, with no recurring form yet.

The map carries four readings. The primary-agriculture row runs the whole transect, because keeping a pasture under panels takes nothing but putting the array where the stock already were. The hatching shows where sparing is rare: at the small end, where an acre or two spares almost nothing, and for low-productivity siting at A5, where brightfields alone reach. A clear cell is still possible even without a bar. Created agriculture happens at every size, from a grazed landfill under a utility array to a garden kept with hives inside a small civic one. Ten of the thirteen forms reach A3, more than any other zone. And read from left to right, the colors tend to move from ownership and structure through siting and scale to management and contracts. That is Chapter 5’s claim drawn form by form: restoration changes tools as projects grow.

Region decides which forms come cheap. Above an overdrawn aquifer, where groundwater law now meters the shortage, retiring irrigated fields is the ready-made shape. A dry climate makes shade valuable enough to pay for a crop canopy’s extra steel. Solar prairie strips answer runoff from rain-fed cropland, and where the water comes from a pump instead, the form all but disappears. The Archetype Catalog sorts the forms by US region.

7.2 Six featured archetypes

Each featured form is drawn in section at its own scale, with the same three-meter panel in every drawing and the sun from the upper left, so the shade bands fall where the shade actually lands. Its outcomes footprint sits beside the drawing. The footprints are hypothetical: judgments about each form, drawn before any project has been measured this way, and to be redrawn as projects are. Each named project illustrates its form rather than having been audited against it.

Barnyard Shelter Solar

A1 scale · S1 farming · ownership-led restoration

Figure 7.3: Barnyard shelter solar in section. The array is sized to the parlor rather than to the grid, which pushes Agriculture out toward the rim and leaves Ecology short of the ring. The drawing carries what the profile cannot: shade gathers the herd, and the ground beneath it compacts.

Roughly 10 to 100 kilowatts stand over the yard or paddock the farm’s own animals already use, high enough for them to shelter beneath, with the power running behind the meter to the milking parlor and the well pump. The same farmer owns the animals, the array, and the labor, so little has to be written down to line their interests up. The form gives up generating at scale, and the ground pays for the shade: the herd gathers under it, and the soil there compacts. At the University of Minnesota’s research dairy in Morris, a 30-kilowatt array shades thirty to forty cows, which in the afternoons ran slightly cooler and breathed more slowly (Sharpe et al. 2021). Full entry →

Perennial Crop Canopy

A2–A4 scale · S1 farming · structure-led restoration

Figure 7.4: Perennial crop canopy in section. One panel row rides above each crop row rather than between them, and the planting keeps its trellis and its roots for the whole life of the array. Agriculture reaches nearest the rim, and Ecology sits just inside the ring, because what carries on underneath is intensive horticulture.

Panels go over a planting that is not lifted between harvests: vines, tree fruit, trellised canes, or wild blueberry. Over low fruit the array is nearly a conventional one, and over vines and trees it becomes a canopy four or five meters up. The crop’s life and the array’s are the same length, which is what makes the form structure-led. At the tall end the extra steel makes it costlier to build than a conventional mount (McCall et al. 2023), and cost and financing is the pressure it gives way to. At the low-growing end the geometry barely departs from a conventional array, and at Maces Pond in Maine, deep shade and blocked harvest access took a blueberry field out of commercial harvest (Calderwood et al. 2025). Colorado has tall canopies over chardonnay and peaches, so far known from press reports. Full entry →

Marginal Land Solar

A1–A3 scale · S4, or S1 where stock stays on · siting-led restoration

Figure 7.5: Marginal land solar in section. The siting decision is the archetype: the array takes the wet, stony corner and the field keeps farming. Communities, Water, and Ecology all sit well out toward the rim, and Agriculture is the one pulled back to the ring.

The array takes the flood-prone corners, rocky headlands, and wet remnants that no longer pay their way, and leaves the better fields to farm, at tens of kilowatts to 3 megawatts on under an acre to 20 acres. Whatever made a parcel poor for farming often makes it poor for solar too, so cost and financing is the pressure it fights. The form exists for income from acres that were not paying. At Cozy Cove Farm in Gurley, Alabama, a 50-kilowatt array stands seven feet over a flood-prone corner of riverside pasture that the herd still grazes, which makes that site the sharing version, at S1. Full entry →

Solar Prairie Strips

A3 scale · S5 farming · siting-led restoration

Figure 7.6: Solar prairie strips in section. Water reaches almost to the rim and Agriculture falls inside the ring, which is the trade this form makes on purpose. The mechanism is visible: runoff intercepted on the contour, sediment held at the upslope edge, roots well below crop depth.

A distribution-scale array of one to five megawatts is paired with deep-rooted prairie planted where the field sheds water: contour bands, low draws, and wet corners. The array, often sold as community solar, pays for the planting. Placement this precise is a tool for the middle of the transect, and it runs out at a few hundred acres, where the substation and the land market choose the ground. At Ramsey Renewable Station in Minnesota, 3.4 megawatts sit on a native ground layer that, in DOE’s modeling, absorbed the 100-year design storm on sandy soil with no detention basins at all. That shows the planting holding the array’s own storm water; no site has yet shown a strip catching runoff from the fields above it, which is the form’s defining claim. Full entry →

Regenerative Solar Grazing

A2–A5 scale · S1–S2 farming · management-led restoration

Figure 7.7: Regenerative solar grazing in section. Water reaches furthest, on held cover and year-round roots, while Communities sits just inside the ring, on the assumption that at the scale drawn the neighbors bear the view and the construction of a large array while the power revenue leaves with an owner from elsewhere. Clearance is the quiet constraint: panels this low settle the question of stock as sheep.

A flock moves through a planned rotation under an array of anything from a few acres to several thousand. Clearance and water points decide the stock, which in practice means sheep. In the commercial zone the flock is usually the landowner’s own, and from the community zone up it is more often hired in. Two calendars have to fit together, since the power plant wants the grass kept low on its schedule and the shepherd moves the flock on the flock’s. Grazing costs at least as much as mowing (McCall et al. 2023), so a budget built on saving money will come up short. By the developer’s account, Aurora Solar’s 150 megawatts across sixteen Minnesota sites are kept by thousands of contracted sheep. Full entry →

Retired-Irrigation Solar

A4–A5 scale · S5 farming · contract-led restoration

Figure 7.8: Retired-irrigation solar in section. Agriculture falls inside the ring by design and Water reaches almost to the rim. The dashed line is the counterfactual, and the claim holds only where governance keeps the saved water from being pumped somewhere else.

Irrigated fields above an overdrawn aquifer come out of production under a large array, commonly 50 megawatts and up, and the panels need no water. Choosing the ground takes the fields out of farming, but only retiring the water right keeps the water in the aquifer, and a water right lives on paper. That is what makes the form contract-led. Kansas irrigators cut their pumping by agreeing to metered, enforced limits (Zwickle et al. 2021); without rules like those, the farming can stop while the saving never arrives. In California’s San Joaquin Valley, Westlands Water District plans to move up to about 136,000 acres of drainage-impaired, formerly irrigated land into solar, as reported by the Public Policy Institute of California. Full entry →

TipAt Rabbit Hills

The primer’s thread ends in a full description: A3 scale · S1 farming · management-led restoration. Each part of that code came from a different chapter. The scale transect placed it in the community zone. The farming axis placed it at S1, because the sheep pasture is still a sheep pasture. And management leads its restorative work: a flock kept on the ground. Among the archetypes it is Regenerative Solar Grazing, with the university’s own flock doing the grazing.

Go deeper

• Perennial Crop Canopy
  Steerable panels over vines in southern France, reported to have raised Chardonnay yields by 60%.
• Regenerative Solar Grazing
  Sheep, and now cattle, rotated across about 2,400 acres of solar farms in Georgia.
• Overhead and interspace systems
  The engineers’ hardware typology, and how it differs from an archetype.
• Archetypes by region
  What each US region tends to build, offered as hypotheses to test.

Calderwood, Lily, Jordan Parks, and Leala Machesney. 2025. Considerations for Solar on Wild Blueberry Land in Maine. Bulletin No. 2095. University of Maine Cooperative Extension. https://extension.umaine.edu/publications/2095e/.

McCall, James, James Macdonald, Robin Burton, and Jordan Macknick. 2023. “Vegetation Management Cost and Maintenance Implications of Different Ground Covers at Utility-Scale Solar Sites.” Sustainability 15 (7): 5895. https://doi.org/10.3390/su15075895.

Sharpe, K. T., B. J. Heins, E. S. Buchanan, and M. H. Reese. 2021. “Evaluation of Solar Photovoltaic Systems to Shade Cows in a Pasture-Based Dairy Herd.” Journal of Dairy Science 104 (3): 2794–806. https://doi.org/10.3168/jds.2020-18821.

Zwickle, Adam, B. C. Feltman, A. J. Brady, A. D. Kendall, and D. W. Hyndman. 2021. “Sustainable Irrigation Through Local Collaborative Governance: Evidence for a Structural Fix in Kansas.” Environmental Science & Policy 124: 517–26. https://doi.org/10.1016/j.envsci.2021.07.021.