How does Sunnyplans rank parcels for solar suitability?

Each parcel gets a SunnyScore from a model trained on the geographic features that distinguish built solar farms from unbuilt land — slope, irradiance, distance to grid infrastructure, and similar signals. Parcels are then filtered to those with at least 5 contiguous flat acres outside protected areas and wetlands, and ranked by SunnyScore.

What does "qualifying parcel" mean in Sumner County, Tennessee?

A qualifying parcel has at least 5 contiguous flat acres (slope under 5%) and no overlap with federal protected areas or mapped wetlands. 49 of 51 parcels in Sumner County, Tennessee currently meet that bar.

Solar Land for Sale in Sumner County, Tennessee

49 of 51 solar-suitable land parcels in Sumner County, Tennessee. Flat 5+ acres, no protected areas, no wetlands. Ranked by SunnyScore.

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qualifying parcels of 51 total

0.96

top SunnyScore in Sumner County, Tennessee

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distillate 3 (pending model explainability)

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distillate 4 (pending model explainability)

Interactive map Explore 49 qualifying parcels in Sumner County, Tennessee Layer-first filtering · SunnyScore ranking · constraint overlays

Top 25 parcels by SunnyScore

#	Acres	$/acre	List price	City	ZIP	SunnyScore
1	2.8	$283,643	$801,749	Portland	37148	0.96
2	60.2	$46,371	$2,793,761	Gallatin	37066	0.93
3	12.1	$797,210	$9,681,043	Hendersonville	37075	0.88
4	2.7	$323,183	$867,126	Westmoreland	37186	0.79
5	4.9	$35,216	$171,222	Castalian Springs	37031	0.73
6	126.8	$137,929	$17,486,655	Gallatin	37066	0.72
7	5.3	$44,095	$235,429	Cottontown	37048	0.68
8	7.6	$212,980	$1,616,202	White House	37188	0.63
9	8.2	$241,786	$1,993,894	Gallatin	37066	0.48
10	2.9	$nan	$nan	Portland	37148	0.32
11	5.2	$39,149	$203,981	Portland	37148	0.30
12	5.2	$52,404	$271,183	Cottontown	37048	0.25
13	6.4	$29,126	$187,089	Portland	37148	0.24
14	4.2	$144,881	$604,309	Hendersonville	37075	0.24
15	26.9	$27,469	$738,532	Westmoreland	37186	0.24
16	7.2	$97,440	$698,741	Gallatin	37066	0.23
17	6.2	$29,043	$180,812	Portland	37148	0.23
18	5.9	$nan	$nan	Gallatin	37066	0.22
19	4.6	$66,006	$306,273	Portland	37148	0.22
20	10.3	$27,024	$277,940	Bethpage	37022	0.20
21	7.4	$106,258	$782,132	Castalian Springs	37031	0.20
22	4.7	$37,390	$176,913	Goodlettsville	37072	0.20
23	3.1	$160,496	$491,134	Cottontown	37048	0.19
24	22.3	$28,404	$632,581	Bethpage	37022	0.18
25	24.1	$72,283	$1,740,191	Hendersonville	37075	0.17

View all 49 qualifying parcels in the live map →

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