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Press release: TopazEV is the industry's first OaaS CSMS. Supports OCPP 1.6, 2.0.1, OCPI, and ISO 15118. Eliminates vendor lock-in and per-session fees.

Open-source EV charging software like CitrineOS and TopazEV gives operators flexibility, interoperability, and control that closed SaaS platforms cannot match.

CEO Olga Haygood explains why 1 in 5 charging attempts fail, the importance of OCPP 2.0.1, and how open infrastructure solves EV charging's core problems.

As federal EV subsidies decline and the market shifts toward sustainable, demand-driven growth, charge point operators (CPOs) need tools that put them in control. TopazEV is a new charge station management platform built for the free market — offering flat-rate pricing, open-source flexibility, and full protocol support so CPOs can scale on their terms. Whether you're launching your first chargers or managing a growing network, TopazEV helps you maximize revenue, uptime, and independence —without vendor lock-in.

It’s been less than 15 years since the first public chargers for electric vehicles (EVs) were installed in the United States. In that time, the industry has seen steady growth, which is accelerating as countries around the world set goals for mass EV adoption.

In our first webinar, we discussed how CitrineOS can help to upgrade EV charging networks to the OCPP 2.0.1 standard. In our newest blog post, Thana Paris, our Director of Open Source Program, answers your most asked questions in detail.

The shift to electric power is revolutionizing the transportation industry, especially for long-haul trucks. Four key stakeholders—governments, truck manufacturers, charger manufacturers, and CSMS companies—have significant interests in electrification. The U.S. government's (Transition to Zero-Emission Heavy-duty Vehicles) and the EU's (AFIR) initiatives demonstrate government support, addressing key challenges like charging infrastructure, costs, grid impact, and en-route charging.

OCPP standards have taken a step forward with the arrival of OCPP 2.0.1. This guide explains the standard, its features, and implementation requirements.

There are a plethora of electric vehicle (EV) charging and management applications used by charge point operators (CPOs), original equipment manufacturers (OEMs) and drivers. These apps help drivers find charging stations, see charging status and complete transactions, and let CPOs remotely control chargers, monitor uptime and more.

As 2024 comes to a close, S44 Energy reflects on an incredible year of growth, innovation, and milestones for CitrineOS, our open-source Charge Station Management System (CSMS). From expanding our capabilities to helping clients transition away from restrictive SaaS solutions, we’ve made significant strides in empowering the EV charging industry. In this blog, discover how CitrineOS is driving the future of EV charging, offering both open-source and custom solutions to build scalable, future-proof infrastructure for Charge Point Operators worldwide.

Ever been on a long road trip with your electric vehicle and finally found an available charging station, only to realize your charging network card isn’t accepted? You try your credit card, but the hardware’s too finicky. You call customer service, and they suggest downloading an app and registering. At this point, all you want is a simple way to charge your car without jumping through hoops, the way it used to be at the gas pump! Enter Scan-N-Charge, a seamless solution designed to make EV charging as simple as scanning a QR code. This innovative project, developed by our team at S44, exemplifies the kind of user-friendly, tech-forward solutions we specialize in.

S44 Energy, a leader in revolutionizing global EV charging experiences, announces its membership in the Open Charge Alliance (OCA). The OCA is dedicated to advancing global development, adoption, and compliance of communication protocols within the electric vehicle (EV) charging infrastructure through collaboration, education, testing, and certification.

CitrineOS, the open-source CSMS developed by S44 Energy and adopted by LF Energy, has released version 1.6.0 with expanded support for OCPP 1.6—enabling broader compatibility with legacy EV chargers. The update includes a redesigned operator UI, support for both OCPP 1.6 and 2.0.1, and key technical enhancements like GraphQL integration and S3-compatible storage. This milestone makes CitrineOS even more flexible and future-ready for EV charging networks. LFE and S44 Energy hosted a public webinar previewing the new features.

SAN FRANCISCO — JULY 16, 2024 — LF Energy, the open source foundation focused on harnessing the power of collaborative software and hardware technologies to accelerate the energy transition, announces the release of LF Energy CitrineOS 1.3.0. This new release marks a significant advancement in CitineOS’ implementation of an Open Charge Point Protocol (OCPP) 2.0.1 compliant Charging Station Management System (CSMS). S44 Energy, a global leader in EV charging solutions, lead contributions to the latest version as part of an open source community developing CitrineOS. This underscores S44 Energy’s commitment to driving innovation and scalability within the electric vehicle charging industry.

From reduced emissions to lower fuel costs for drivers, electric vehicles (EVs) have the potential to create significant positive impacts on society. Today, EVs are available in a range of makes, models and prices, and have better driving range than ever before. But EV adoption still lags behind internal combustion engine (ICE) vehicles, which outsell EVs seven to one.

MAHWAH, NJ — JANUARY 28, 2024 – S44 Energy, the developer behind CitrineOS, an open-source Charge Station Management System (CSMS) and a Linux Foundation Energy project, proudly announces that CitrineOS has achieved OCPP 2.0.1 Core & Advanced Security certification from the Open Charge Alliance.