Custom energy management software for suppliers, grid operators, renewable energy project developers, ESCOs and large energy users, from customer portals and smart meter integration to trading tools, ESCO monitoring and CSRD energy reporting. We do not replace your Schneider EcoStruxure, Siemens Spectrum Power or Itron platform, but build the specific layer around it that your operation really needs.
An energy supplier, grid operator or renewable energy project developer in the Netherlands runs on a dense stack of industry systems. Schneider Electric EcoStruxure or Siemens Spectrum Power for grid and SCADA operations, ABB Ability and Hitachi for substation automation, Itron and Landis+Gyr for smart metering and MDM, Utiligize for network planning, EnergyCRM for customer administration and switching, plus the usual ERP and CRM layer for finance and sales. For standard utility processes, that stack works well.
We don't replace those platforms. We're asked to build the layer around or on top of them: a custom energy management platform that reports across multiple sources, a customer portal for consumption insight and switching, software for energy installers that links certification and materials to scheduling, a trading cockpit built on top of EPEX and ICE Endex, or an ESCO monitor that tracks savings against baseline for each performance contract. For the broader context of what we do in software development, see our main page.
The target group is broad. Energy suppliers such as Vattenfall, Eneco, Greenchoice and Budget Energie. Grid operators such as Stedin, Liander, Enexis, TenneT and Gasunie. Renewable energy project developers in solar, wind, geothermal and battery storage. Energy cooperatives, ESCOs with performance contracts, solar panel and heat pump installers, EMS and ESS providers, energy traders in gas, electricity, CO₂ allowances and Guarantees of Origin, property managers with an energy portfolio, and large energy users under MJA3. Each of these roles has a differently configured systems landscape, but the pattern is the same: a dense enterprise core surrounded by workflows that are difficult to squeeze into off-the-shelf packages.
At the same time, the entire sector is moving further into the energy transition. Decentralised storage, vehicle-to-grid, congestion management, hybrid heating projects, and solar parks participating in imbalance markets. These new data fields, contract types and KPIs are not yet structurally covered by packages such as EcoStruxure, Spectrum Power or Itron, while your operation still needs to measure them, invoice them and demonstrate them to ACM or an EED auditor. A lightweight custom layer on top of your existing systems is often more practical than waiting for your vendor to release a module for it.
Custom software for the energy sector is broad. We are usually asked for three types of projects, and most assignments are a combination of two of them.
A custom energy management platform that brings data from smart meters, sub-meters, sensors and existing EMS hardware together in one environment. Consumption dashboards per building, site or usage type, anomaly detection for irregular behaviour, KPI tracking for MJA3 and EED audits, plus forecasting of consumption and production for solar and wind. When you run several energy management systems side by side, for example a Schneider system at head office, a Siemens layer at a production site and your own sub-metering layer in a third building, we build the energy management integration that brings them together in a single reporting layer.
The architecture is deliberately modular. An ingest layer for P1 port, DSMR, Modbus, OPC UA and MQTT, a time-series database for the raw measurement data, and on top a reporting and alerting layer. This keeps the system flexible when a site is added, a hardware supplier is replaced, or a new standard, such as CSRD energy reporting, requires additional fields.
For energy suppliers, we build customer portals where households and business customers can view their consumption, look back at day-by-day smart meter data, understand annual statements and instalment amounts, complete a switch or contract renewal, and handle payments via iDEAL or direct debit. Login via DigiD, eHerkenning or a magic link for business customers, with a clear integration to the underlying CIS, often EnergyCRM, SAP IS-U or an in-house administration.
For installers of solar panels, heat pumps and charging infrastructure, we deliver software that supports the entire workflow from quote to completion: appointment scheduling with routes, materials and component management, certification according to KIWA and the Building Decree (Bouwbesluit), an engineer app on tablet with digital survey forms and photo reporting, and automated subsidy flows for ISDE, EIA and SDE++. For the broader construction and field-service context, we often work on an installation company platform.
For energy traders, we build trading tools that integrate with EPEX SPOT, ICE Endex and the TenneT balancing market: intraday orders, position monitoring, balancing, P&L per portfolio and automated bid strategies within clear risk limits. Forecasting for gas and electricity prices, production forecasts for solar and wind farms, and trading in CO₂ allowances and Guarantees of Origin under the HKN system. For ESCOs, we deliver a monitor that measures the saving on each performance contract against the agreed baseline, invoices automatically on the agreed share, and fully automates KPI reporting to the client.
Smart grid applications form the third strand: distributed battery storage coordination, vehicle-to-grid flows for charging infrastructure providers, congestion management modules for grid operators and EMS providers, and hybrid flows in which a solar park, a battery and an industrial customer share a single optimisation target. For the broader data integration between all these sources, we often work through smart API integrations with your existing operational systems.
Working energy software in production, plus everything around it so you can manage, audit and develop it yourselves within ACM supervision, EED, CSRD and the other standards that apply in the energy sector.
Four patterns where an off-the-shelf package gets stuck and targeted software adds value, based on projects we encounter in supplier, grid operator, ESCO and property developer contexts.
A commercial building runs on a Schneider EcoStruxure layer, a production site on Siemens Spectrum Power, a third location has its own sub-metering system, and on top of that management wants a single dashboard with consumption KPIs per site. Standard EMS packages cover their own scope well, but a consolidated reporting layer across all sources, including external smart meter data via P1 or DSMR, calls for a custom integration that brings multiple energy management systems together.
Energy service companies work with performance contracts in which the fee is linked to realised savings against an agreed baseline. Standard CRM and ERP packages do not support that contract model out of the box: you need to account for baseline corrections for weather, production levels and building use, invoice automatically on the agreed share, and deliver KPI reporting to the client. A custom monitor fits that far more tightly than a general-purpose tool.
Operators and property developers are in the middle of the transition to battery storage, vehicle-to-grid, geothermal and hybrid installations. Existing packages often don't yet track these data fields, KPIs and reporting requirements in a structured way. A lightweight custom layer on top of your existing EcoStruxure, Spectrum Power or Itron layer can measure and report on the new portfolio without waiting for a replacement platform.
For energy suppliers and installers, the portal or engineer app is part of the brand. A generic white-label tool rarely fits completely: branding, UX flow per target group, integration with your CIS and CRM, and alignment with your customer service almost always call for custom work. The same applies to installer software where KIWA certification, Building Decree requirements and subsidy applications for ISDE and SDE++ must run in a single workflow.
With OneDayBuild, we turn your idea into something tangible in one day for €1,150, so you can see whether further development is worth the investment. Decide to go ahead with the full build? Then we credit the full cost.
Explore OneDayBuild →The building blocks we draw on. The combination and depth differ per organisation and per portfolio, but we consistently see these elements in projects for suppliers, grid operators, ESCOs and project developers.
An ingestion layer for smart meters via the P1 port and the DSMR protocol, sub-meters via Modbus or M-Bus, sensors via MQTT or OPC UA, and gateway integrations with EMS hardware from Schneider, ABB and Siemens. Validation, deduplication and time zone handling are managed centrally before data lands in the time-series layer.
Consumption dashboards per building, site, department or type of use — electricity, gas, heat, cooling, water — with drill-downs to hourly level. Comparison against baseline, degree-day correction for heating, and visualisations that both an energy manager and a board member can read at a glance.
Models that automatically flag unusual consumption at a site, a night-time baseline that suddenly rises, or a sub-meter that drops out. Alerts to the energy manager, ticket creation in your service tool, and calculation of the impact on MJA3 or EED targets.
Forecasting of consumption per location, production for solar or wind farms based on weather forecasts, and price forecasting for day-ahead and intraday EPEX trading. Often fed by a combination of historical consumption, KNMI weather models and market data from ICE Endex and EPEX SPOT.
A trader cockpit with intraday orders, position overview, P&L per portfolio, automated bidding strategies within risk limits, and balancing market handling towards TenneT. Audit trail per order, four-eyes control on large trades and compliance reporting for the regulator.
Direct integration with the P1 port of the Dutch smart meter under the DSMR protocol, plus integrations with Meter Data Management systems from Itron and Landis+Gyr for suppliers. Validation, recovery of missing intervals and correct time zone handling around daylight saving changes are standard.
For energy installers and facility teams we build an IoT layer on top of sub-meters, temperature and air quality sensors, and EMS hardware from Schneider, ABB and Siemens. Edge gateways process signals locally and forward only consolidated data, which benefits both bandwidth and security.
For producers, traders and suppliers of renewable energy, we build a GvO flow that connects to the HKN system of CertiQ and Vertogas: registration, transfer, cancellation, and linking to customer contracts, so your green electricity claims are transparent and auditable for the ACM and your own customers.
For Energy Service Companies we build a monitor that measures, per performance contract, the realised saving against the agreed baseline, invoices the agreed share automatically, and fully automates the KPI reporting to the client. Includes baseline correction for weather and production levels.
A single consolidated reporting layer for ACM supervision, MJA3 long-term agreements, the CO2 Performance Ladder, EED audits and CSRD energy reporting. Includes electronic signatures where the standard requires them, and a validation file you can hand to your auditor, often built from the same data that also feeds your CSRD ESG reporting.
For installers and project developers we build automated subsidy application flows: collecting documents, photos and technical specifications during fieldwork, then automatically compiling an SDE++, EIA or ISDE file that the applicant only needs to sign and submit via mijn.rvo.nl.
For operators of solar parks, wind farms and heat pump installations, we link asset monitoring to maintenance planning: inverter faults, production outages and preventive maintenance cycles flow into the same process as the wider CMMS maintenance management system layer your operations run on.
A conversation in which we understand which bottleneck affects your operation: energy management, customer portal, trading, ESCO or installer software, which industry systems you run (EcoStruxure, Spectrum Power, Itron, EnergyCRM), and which compliance stack applies to your role in the chain.
We model your operational flow for consumption, production, trading or customer administration. Interviews with energy managers, traders, ESCO coordinators or installer planners, plus a systematic review of your integration landscape and the applicable standards (ACM, MJA3, EED, CSRD). End result: a scope document, a plan and a first screen flow.
Fortnightly working builds, tested at a pilot site or within a pilot portfolio. For energy management platforms, we test the ingest layer and data quality first; for trading tools, the market integration under controlled volumes; for customer portals, the login flow and CIS integration. Direct feedback from your operations, adjusted straight away.
A phased rollout by site, portfolio or customer segment, a validation package for your auditor or ACM, training sessions for key users and field staff, plus ongoing support for security patches, further development and expansion into new energy transition modules whenever your portfolio calls for it.
What clients in the supplier, grid operator, ESCO and installer context typically want to know before we start.
A no-obligation introductory call of half an hour. We listen to your operational processes, ask probing questions about compliance, market integrations and EMS integrations, and give direction you can use, even if custom development turns out not to be the answer. For broader context on where this type of project fits, see our page on oil and gas software, our work on facility management software, or our API integration practice.
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