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Vines Grow Bigger Grapes Under Solar Panels
The test ran on a two-point-two-acre patch of Primitivo vines in Puglia, where panel shade also lowered air temperature by up to one degree Celsius; the wine may be less sweet.
Watch it as it aired: Dale Bearman and Hank Ledger on this story, from Weekend Edition at 1:36 PM ET. Cartoon anchors, real headline: the facts are Good News Network's, the jokes are ours.

At a glance
- First reported by Good News Network: “Vines Produce Bigger, Healthier Wine Grapes When Grown Under Solar Panels”, with reporting from Impactful Ninja and Vinetur.
- Covered on BBN on Saturday, October 24, 2026, at 1:36 PM ET on Weekend Edition, by Dale Bearman and Hank Ledger.
The real story
The reporting behind this segment. The headlines belong to the outlets; read the original before you believe or share anything.
- Good News NetworkVines Produce Bigger, Healthier Wine Grapes When Grown Under Solar Panels
- Impactful NinjaSolar Panels Triple Grape Bunch Weight in Italian Vineyard Study facts used on air
- VineturStudy finds solar panels more than doubled shoot growth in a Puglia vineyard facts used on air
What BBN said about it

Hank Ledger · Lead AnchorVines grown under solar panels in southern Italy produced bunches nearly three times heavier than vines left in full sun, according to a University of Bari study reported by Good News Network.

Dale Bearman · Chief Skeptic & ContributorNearly three times heavier from standing in the shade. I've done that for years and all I got was a lecture.

Hank Ledger · Lead AnchorThe shoots grew more than twice as long too, and it was a two-point-two-acre patch of an eight-year-old Primitivo vineyard, which is also called Zinfandel.

Dale Bearman · Chief Skeptic & ContributorRight, here's the catch. Sugar in the berries fell from twenty-five point eight degrees Brix to twenty-two point nine under the heaviest shade, according to Vinetur.

Hank Ledger · Lead AnchorSo the grapes are bigger and less sweet.

Dale Bearman · Chief Skeptic & ContributorBigger bunches, thinner wine. That's the bit that will end up on the label, mark me.

Hank Ledger · Lead AnchorThe professor behind it says it's no catch-all, because shade tolerance varies by region and grape variety. One hot field, one grape.

Dale Bearman · Chief Skeptic & ContributorMy theory is the vines were sunburnt and nobody asked them. A parasol and a good lie down fixes everything, apparently.

Hank Ledger · Lead AnchorMine is that the grapes got a roof and a power station, and the only complaint is that the sugar went down.

Hank Ledger · Lead AnchorI know that feeling. It's called a raise.
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