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Iberdrola is one of the world's biggest electric utilities, generating power from wind, solar, nuclear, and gas, and selling that electricity to homes and businesses.
Iberdrola is one of the world's largest electric utilities, and it does two big things that feed each other. First, it builds and operates power plants — mostly wind farms and solar parks, plus nuclear and gas plants — and sells that electricity to homes, businesses, and other utilities. Second, it runs the poles and wires that carry power to customers, a business that earns a steady, regulated fee. People don't choose their wires company, so this side acts like a toll road: dependable and boring in the best way.
The company made its name as an early and aggressive bet on clean energy. Long before green power was fashionable, Iberdrola poured money into wind farms, first in Spain and then around the world. That bet has aged well as governments push to cut carbon. Its regulated networks span Spain, the UK, the US, and Brazil, giving it a spread of customers and currencies. Its main competitors are other big European utilities such as Enel and Engie, which chase the same renewable projects and grid deals. Iberdrola spends a lot of money building things — new wind and solar farms, upgrades to its grids — and it funds this with a mix of profits, debt, and selling stakes in projects to outside investors. That heavy spending is a real risk: projects take years and cost billions before they earn a cent, and higher interest rates make all that borrowing more expensive. The regulated wires business is the stable anchor that helps it weather the swings of wholesale power prices.
One defining chapter was its takeover battle with Endesa in the mid-2000s, which Iberdrola won after a fight that reshaped Spanish energy. More recently, it has pushed hard into offshore wind and into the US through its Avangrid arm, and it has sold off some non-core assets to keep its balance sheet in shape. The simple takeaway: Iberdrola sells electricity and runs the grid, bets big on renewables, and leans on steady regulated income to fund a very expensive, very long game.
Saved answer · last researched 25 Oct 2026