Open Architecture. Transparent Modeling. Defensible Results.
APEX, a RESNET accredited cloud-based energy rating software solution targeting residential new construction, leverages the power of DOE's EnergyPlus simulation engine and NREL's OpenStudio-ERI calculation platform to assess the modeled performance of a home relative to a reference home. The energy rating index (ERI) calculated by APEX can be used in a variety of ways, including performance-based energy code compliance, utility incentive programs, national and regional energy efficiency program certification, and sustainability/ESG reporting. APEX is available today and features a fully supported GUI, supports multiple text file input formats, and is accessible as a stand-alone platform, via a modern API, or through our AXIS platform integration.
Why Engine Transparency Matters
Energy ratings impact code compliance, utility incentives, mortgage qualification, appraisals, and builder profitability. Yet not all simulation engines are built the same way. Some operate as proprietary systems where calculation methodologies are not publicly reviewable. Others are built on open-source frameworks that allow industry inspection and validation.
APEX is built on an open-source simulation engine. That difference matters.
When Results Differ
In residential modeling, differences sometimes occur between platforms. With a proprietary engine, you may be forced to trust internal logic. With an open-source engine, you can review assumptions, trace calculation pathways, and identify root causes to build knowledge and confidence in your results. The APEX simulation engine is open-source - meaning the calculation methodology can be reviewed, understood, and validated by the industry. When results differ, you can see why.
Transparency reduces friction and builds long-term credibility and confidence in the energy modeling process. Simply put, proprietary engines do not.
Built for Efficiency, Transparency, and Integrity
APEX is designed for:
Raters and builders seeking transparency, consistency, and trustworthy results
Utilities requiring audit defensibility
Program administrators managing long-term risk
Organizations looking to automate processes leveraging energy models and simulation results
APEX offers superior transparency while enabling operational efficiencies for raters, builders, program administrators, and other key stakeholders that rely on residential energy modeling. APEX's modern API and AXIS integration provide unparalleled interoperability, functionality, and flexibility for the entire industry. Contact us to learn more about APEX.
Collect. Manage. Share.
Used by leading energy efficiency and green program sponsors such as NEEA, Energy Trust of Oregon, and the NGBS Green program, AXIS serves as a centralized data collection, storage, and sharing hub with integrated workflow management and messaging functionality. In addition to supporting program-specific workflows, the RESNET HERS rating ecosystem, and NGBS Green certification processes, the modular architecture of AXIS allows for customization of functionality, visibility, and workflows to satisfy virtually any compliance or certification program.
AXIS is a cloud-based data and workflow management platform that streamlines energy ratings and energy efficiency program participation through data sharing by connecting raters/verifiers, certification organizations, QA organizations, utilities and others using a centralized data repository and modern user interface.
Designed for All Stakeholders
Architected from the start as a centralized data hub, AXIS delivers unparalleled accessibility and transparency for all stakeholders. AXIS can be customized to support a variety of different data validation, workflow, and notification options.
Raters and Providers
- Manage all of your projects in a single database
- Import REM/Rate™ or Ekotrope data and populate inspection checklists
- Share rating data directly with your Provider
- Perform QA, report findings, and certify homes
Utilities and Program Sponsors
- Create programs with customized data collection requirements and integrated savings and incentive calculators
- Review and validate field inspection and energy model data
- Process and track incentive payments
- Store program documentation
- Generate custom certificates and reports
Builders/Developers
- Immediate access to rater/verifier inspection and modeling data
- Track utility incentive payments
- Review energy savings prior to construction
- Generate customized reports and marketing material
Efficiency. Delivered.
AXIS is a cloud-based platform accessible from any device, featuring a modern API for seamless integration. Designed to work with a wide range of data sources, AXIS also offers optional direct integration with APEX to automate the transfer of energy model and simulation data into rating and certification workflows. AXIS centralizes data and streamlines workflows to drive next-level operational efficiencies. Contact us to learn more about AXIS.