Real-time CAISO NP15 prices, one API call.

What the NP15 price API returns

The locational marginal price (LMP) is the wholesale cost of electricity at a specific point on the grid for a single five-minute interval. It bundles the marginal generator's cost with congestion and losses, and it is the number traders, battery operators and large buyers watch most closely.

This endpoint covers the Northern California (NP15) trading hub. California ISO is the most solar-heavy grid in North America, with peak demand roughly 45,000–52,000 MW on hot summer evenings, so its prices move fast — exactly why a low-latency feed matters.

Who uses NP15 prices

• Battery and storage dispatch — charge cheap, discharge into the peak.
• Energy trading, hedging and settlement signals.
• Demand-response triggers for large electricity consumers.
• Retail and wholesale cost forecasting.

Coverage & cadence

Five-minute intervals in $/MWh, history on the paid tiers. Need the other hubs? See the CAISO price API.