Renewable Energy
Generation is no longer the hard part. Solar and wind are the cheapest new capacity in most markets, and in 2026 they make up the overwhelming majority of what actually connects to grids — around 79 GW of the 86 GW being added in the United States alone.
The hard parts have moved downstream: what the power is worth when everyone generates at the same moment, whether the wires exist to move it, and how much firm capacity a variable resource can be credited with. BrightVolt covers wind, solar, hydro, grids and home electrification with those questions in front.
Perovskite’s 27% Record and the Number That Ships
A Nanjing team pushed perovskite-organic tandem cells to a certified 26.88% — a real record, and the wrong number to watch. The efficiency that ships, and how long it lasts, lag far behind.
Land Equivalent Ratio: The Number That Sells Agrivoltaics
The land equivalent ratio is the headline metric for solar farms grown over crops. It almost always tops 1 by design – and it hides the harvest it cost to get there.
Grain-Oriented Steel: the Alloy the Grid Runs On
Nearly every transformer on the grid has a core of grain-oriented electrical steel – a 3%-silicon alloy the US makes at one mill. Why it’s so hard to replace, and why lead times now hit four years.
LCOE Explained: What the Cheapest-Power Number Leaves Out
LCOE is the most-cited number in energy and the most misused. It measures one thing — the lifetime cost of a new plant’s own output — and gets used to answer three questions it can’t.
Interconnection Queues: The Clean-Energy Bottleneck
About 2,000 GW of power – more than the entire US fleet – waits in interconnection queues, and only 13% of projects ever connect. What the queue is, why it moves so slowly, and why Texas escapes it.
The BrightVolt Take: China’s Coal Is Contracted to Run
China curtailed an estimated 360 TWh of wind and solar in H1 2026 – more than its entire demand growth – while adding 30 GW of coal. The waste is a policy choice, not a grid limit.
Red States Are Building 71% of New US Solar
States that voted for Trump built 71% of new US solar in the first half of 2026 — led by Texas at 3.44 GW — even as Washington dismantles the credits that helped start the boom.
Capacity Factor: Why 1 GW of Solar Isn’t 1 GW of Gas
Capacity factor is the share of its nameplate a plant actually delivers – why nuclear makes 18% of US power from 7.7% of capacity, and why 1 GW of solar and 1 GW of gas are nothing alike.
Cost of Capital: Why It Sets the Price of Clean Power
A wind farm burns no fuel, so most of what it costs is the money that built it. That is why financing – 20 to 50% of solar’s lifetime cost – sets the price of clean power.
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