CAISO Market Monitoring

Track California's grid in real time — demand, solar generation, LMP prices, and storage opportunities.

~12 min
4 tools
For Energy Traders & Analysts
1

Check System Demand

gridkit_caiso_demand

Start every morning briefing with the big number: how much power is California consuming right now? CAISO publishes system-wide demand in five-minute intervals across every pricing zone. A single tool call gives you the full picture.

$"What's the current system demand across CAISO?"

Results

Peak System Demand28,036 MW
Data Intervals816
CoverageAll CAISO zones
CAISO publishes granular demand data by zone — essential for understanding where power flows. A 28 GW peak on a spring day signals moderate load; summer peaks can exceed 45 GW, tightening reserves and spiking prices.
2

Monitor Solar Generation

gridkit_caiso_renewables

Solar is the dominant force shaping California's intra-day price curve. By mid-morning, utility-scale PV floods the grid with cheap electrons, suppressing wholesale prices. Knowing the real-time solar output lets you anticipate where prices are heading next.

$"Show me today's solar generation on the CAISO grid"

Results

Peak Solar Output12,062 MW at 2:00 PM
Average Output2,313 MW
Total Solar Energy166,538 MWh

Solar Generation Curve (MW)

12 AM6 AM12 PM6 PM12 AM
When solar peaks above 12 GW on a mild demand day, oversupply drives prices negative. Generators are literally paying the grid to take their power — and that creates the trading opportunity we'll explore next.
3

Analyze LMP Prices (The Duck Curve)

gridkit_caiso_lmp_prices

Locational Marginal Prices (LMPs) reveal the true cost of electricity at each node. Day-ahead prices at SP15 (Southern California) tell a dramatic story: the famous duck curve, where midday solar pushes prices negative before they surge in the evening ramp.

$"Get day-ahead LMP prices at SP15 in CAISO"

Day-Ahead LMP — SP15 ($/MWh)

12 AM6 AM12 PM6 PM11 PM
Negative (solar surplus)TransitionEvening peak

Key Price Points

Morning base (12-7 AM)$24 - $27 /MWh
Solar transition (8 AM)$17.00 /MWh
Solar trough (9 AM - 3 PM)-$4.00 to -$5.20 /MWh
Evening ramp (4 PM)$10.59 /MWh
Evening peak (5-11 PM)$26 - $27.91 /MWh
Gridleaf CAISO markets dashboard showing day-ahead LMP prices
The $33+ price swing between solar trough (-$5.20/MWh) and evening peak ($27.91/MWh) is the duck curve in action — and it's a massive opportunity for battery storage operators.
4

Identify Storage Arbitrage Opportunities

Analysis based on Steps 2 & 3 data

The duck curve isn't just a curiosity — it's a daily, repeatable arbitrage signal. Battery storage operators charge during negative-price hours (when generators pay you to absorb power) and discharge during the evening peak when prices climb back above $27/MWh. Here's the math.

Arbitrage Economics — 100 MW / 4-hour Battery

Charge Price

-$5.20/MWh

Paid to charge

Discharge Price

$27.91/MWh

Evening peak

Price Spread$33.11 /MWh
Battery Capacity400 MWh (100 MW x 4 hr)
Daily Revenue Potential$13,244
Annual Potential (~350 days)~$4.6M
This daily arbitrage pattern is repeatable — California's duck curve is structural, not seasonal. As more solar capacity comes online each year, the midday trough deepens and the evening ramp steepens, widening the spread.
5

Understand the Regulatory Landscape

gridkit_nypsc_notable_cases

Markets don't exist in a vacuum. Regulatory proceedings determine interconnection rules, storage incentives, and market design. Gridleaf can surface key dockets from the NY PSC so you're never caught off guard by a ruling that reshapes the market.

$"Show me notable energy regulatory cases"

Key Proceedings

14-M-0101Reforming the Energy Vision (REV)
Active
20-E-0197Interconnection Policy Reform
Active
18-E-0130Energy Storage Deployment
Active
18-E-0071Offshore Wind Framework
Active
Regulatory decisions shape market structure — staying current on proceedings is essential for strategic trading. The energy storage docket (18-E-0130) alone has driven billions in investment by establishing deployment targets and incentive frameworks.

The California Duck Curve — Your Trading Edge

With four Gridleaf tools, you can build a complete morning market briefing in under five minutes: check system demand to gauge overall load, monitor solar generation to anticipate oversupply, pull LMP prices to quantify the duck curve spread, and scan regulatory dockets for structural changes.

Run these same queries throughout the day for intraday monitoring, or track the data over weeks to identify seasonal patterns and refine your long-term trading strategy. The duck curve is predictable, structural, and not going away — if anything, it deepens every year as California adds more solar capacity.

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