Device-level curtailment control for solar
Energy suppliers · Aggregators & BRPs · CPOs

Become a partner

The Curtailer sits at the device level, on the customer's own installation, and does not depend on any inverter manufacturer exposing an API. That makes it a control point you can reach on assets that are otherwise out of reach - whichever inverter brand happens to be on the roof.

Who we work with

Three shapes of collaboration, each with a different reason to want control at the device.

Energy suppliers

Negative-price hours are where a solar feed-in contract hurts both sides. Offering curtailment alongside the contract turns those hours into a non-event for your customer and removes the exposure you are pricing in today.

Bundle hardware with a PPA or feed-in offer
Tariff tracking follows your published prices
Aggregators & BRPs

Portfolios stall on the assets whose inverters have no usable cloud API, or five different ones. A device-level controller gives you a single, uniform way to shut export down across the whole portfolio, ahead of the settlement hour.

One control interface across mixed inverter brands
REST API for dispatch from your own systems
CPOs & site operators

Where charging capacity and solar export share a grid connection, the export side is usually the part nobody can steer. The Curtailer gives you that lever per site, without a second portal for the site owner to learn.

Per-site control that fits an existing DIN rail
Site owner keeps ownership, you keep the control

What a partnership looks like

We are a small team and shape each partnership around what you actually need - but these are the four pieces most conversations start from.

01
Control access

A REST API over your devices, so curtailment decisions can come from your trading desk, EMS or dispatch platform rather than from ours.

02
Fleet management

Devices grouped under your account instead of one login per customer, with status and performance across the fleet in one place.

03
Hardware supply

Volume supply of Mini wifi or Mini wifi ext, with DIY, installer or full-service installation depending on what your customer base expects.

04
Commercial model

Referral, reseller or co-branded - including how the subscription is billed and who owns the customer relationship. Open to discussion.

Why device-level control travels further

Curtailment that runs through an inverter manufacturer's cloud API only ever covers the brands that API has integrated, and breaks when the API changes. That is a poor foundation for a portfolio you do not get to choose the hardware for.

The Curtailer works electrically - DRM, Modbus over TCP or serial, or a simple 2-pin digital input - so the same controller and the same integration keeps working across an installed base you inherited rather than specified.

Works with any inverter brand, no OEM API required
Core curtailment control is free forever, per device
Runs on real day-ahead prices, not modelled estimates
SDE++ negative-price rules tracked where they apply
Dutch-built hardware, small enough for a DIN rail

Not sure which of the three you are, or want to sketch something that does not fit the list? A short call is usually the fastest way to find out.

+316 574 608 74

Let's see if there's a fit

Tell us about your portfolio and what you would want to control. We'll come back with a concrete proposal.

Stay in the loop

Curtailment news and product updates, a few times a year.