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Sweden Registry Bridge: Cancel in CESAR using Soldera’s Integrated Platform

Sweden’s Guarantee of Origin registry is CESAR. It’s operated by the Swedish Energy Agency, and as a mature registry environment, it’s pretty straightforward to operate. But, it has a very limited API, and for multi-national companies managing GOs across Europe, even a well-run national registry can be a thorn in the side of productivity. The question to ask is whether or not CESAR can slot into a clean, international GO workspace that automatically adapts to your energy consumption patterns in a clean and automated manner.

Back to CESAR - until you integrate it into your global EAC management work, it becomes another standalone browser process that does not fit in the same operating layer as the rest of the portfolio. As a result, sustainability teams spend hours moving between registries and transporting data around manually, suffering from context switching. We’re here to solve that, and this article explores the benefits of using that kind of integrated workspace. We’ve already built it so you don’t need to.

The Solution: Soldera’s Platform

Through Registry Bridge, Soldera maintains a direct, under-the-bonnet connection to the CESAR registry environment. Built on this infrastructure is a hosted account, also connecting to every other European registry thanks to years of developing complex, custom-built registry connections . This account can be used for cancellation or transfer (and any other registry action), and exists in a state of perpetual registry-state alignment thanks to bespoke integration architecture.

Cancellation is a new possibility here: Before Soldera, cancellations required CESAR account access. CESAR requires that, when cancelling, account holders specify the beneficiary, usage category, and consumption period.

Soldera makes this straightforward: Not only do you not need a local account, Soldera’s AI populates these fields for you using your company context, meaning that what once took hours of manual registry cancellation work is now condensed into a cleaner user experience driven by AI. You also don’t need your own Swedish volumes, as you can procure directly from our network of Swedish producers (who use Soldera to manage their GO sales processes) entirely within the application.

Audit-Prepared Outcomes

Swedish GO cancellations and the CESAR-sourced cancellation documentation that is required for credible Swedish claims can now be handled from a single platform - and, thanks to the audit trail that is prepared as you work, your documentation is reporting-ready. The audit trail acts as transparent proof that at no point was the integrity of the underlying CESAR registry action lost or muddled up. Everything is clear, transparent, and repeatable.

More Resources:

Registry Bridge FAQ

How to get cancellation documentation for Sweden renewable energy claims?
Cancellation documentation for Sweden renewable electricity claims needs to come from Cesar. Soldera’s Registry Bridge routes cancellations through Cesar and exports the resulting evidence in-platform, ready for audit and attributed to the beneficiary, consumption period and usage category.
Is there a GO registry API for Cesar?
Soldera’s Registry Bridge gives you one API endpoint that covers Cesar together with the other major European EAC registries. Instead of sourcing or building a direct Cesar API, which Cesar offers only in limited form, you connect once to Soldera and manage cancellations, transfers and reconciliation across integrated registries from a single connection point.
How to transfer Guarantees of Origin into Cesar?
Soldera’s Registry Bridge supports GO transfers into and out of Cesar inside the Soldera platform. The hosted account works as an operational Cesar account, so you can send and receive GOs with counterparties without needing standalone Cesar access.
How long does it take to cancel GOs in Cesar?
Through Soldera’s Registry Bridge, Cesar cancellations can be completed and documented in the Soldera platform. AI-assisted field population covers beneficiary, consumption period, usage category and location, compressing registry work that used to take hours into minutes.
How to match renewable energy in Sweden?
Soldera’s Registry Bridge makes it straightforward to match electricity consumption with verified market-based renewable energy instruments in Sweden. Upload your consumption data, then source and cancel local certificates with documentation from the correct local registry, which in Sweden is Cesar.
How to cancel GOs in Cesar?
Soldera’s Registry Bridge lets teams run cancellations in Cesar directly from the Soldera application. You do not need to maintain a separate local account in Cesar just to cancel there.
How to open an account in Cesar?
Account opening details are available in the domain protocol for Sweden. With Soldera’s Registry Bridge, you can also avoid opening a standalone Cesar account for cancellation and GO management workflows. Your hosted account in the Soldera platform gives you Cesar functionality for cancellations, transfers and data reconciliation without the admin load of a separate local account.

Oliver Bonallack is Growth Marketing Lead at Soldera. His writings focus on Energy Attribute Certificates (EACs) and Guarantees of Origin (GOs). He has a background in venture analysis and public policy, with a First Class BSc in Politics & International Relations from the University of Bristol alongside top performance in the Venture Institute and the Terra.do Climate Fellowship. His climate and energy experience includes building AI-first workflows for registry operations and investing in climate technology startups via Collective VC and Team Ignite Ventures. His day-to-day work focuses on compliance and registry ops, market data and policy research, content and GTM systems, and automation across renewable certificate processes

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