Stop paying the “sun tax”

When market prices go negative, the Jousto Energy Hub can curtail or export-limit your inverter — protecting your yield and shifting energy into useful loads.

Explore Jousto Hub See live NEM prices

Why curtailment matters

In a wholesale plan, prices can go negative. That’s great for buying energy — but it can penalise solar exports. Curtailment (or export limiting) avoids sending energy to the grid when it costs you, and redirects it into hot water, batteries, EV charging or simply pauses generation temporarily.

Tip: Watch the market here → Live NEM Spot Energy Price.

Your options for excess solar

Option 1 — Stay on a regular tariff (TOU)

Avoid negative market pricing altogether. Simple bills and “set & forget.”

Partner: Energy Locals

Option 2 — Go wholesale + curtail when negative

Benefit from low/negative buy prices and protect exports by:

Export limiting the inverter during negative events
Temporarily switching off PV output if needed
Shifting energy to hot water, EVs, batteries with automations

The Jousto Hub supports a range of inverters (e.g., GoodWe, Sungrow, Solis, Fox ESS) for API-based control.

Option 3 — Trade your surplus

Use peer-to-peer energy trading to sell to friends, family or the community at agreed rates.

Learn more: Peer-to-Peer Energy Trading

What the Jousto Hub does

Curtailment & export limiting

Based on live price signals and thresholds, the Hub sends commands to compatible inverters to reduce or pause export — automatically resuming when prices recover.