RETScreen Energy & Decarbonization Services
About
Our Approach
We don’t use RETScreen in isolation. Our team integrates RETScreen modelling with:
- Detailed hourly energy simulations
- Engineering-grade assumptions
- Local climate and utility data
- Project-specific design inputs
This dual-modelling approach allows us to cross-validate results—ensuring outputs are accurate, defensible, and aligned with real-world performance.
RETScreen-Based Services
WalterFedy uses RETScreen Expert to support energy, carbon, and financial analysis for industrial, commercial, and institutional facilities. Our team integrates RETScreen within a broader engineering and sustainability workflow to help clients evaluate performance, reduce emissions, and support informed capital planning decisions.
Our Services Include
- Energy and GHG benchmarking
- Electrification and decarbonization analysis
- Renewable energy feasibility studies
- Lifecycle cost and payback analysis
- Funding and incentive application support
- Portfolio and long-term sustainability planning
Using engineering-grade inputs, regional utility data, and project-specific modelling, we deliver transparent and defensible analysis aligned with client sustainability goals, ESG strategies, and regulatory requirements.
Featured Project: ArcelorMittal Tailored Blanks Americas
Facility: Ingersoll Manufacturing & Office Facility, Ontario
WalterFedy completed a comprehensive sustainability and feasibility study to support electrification and long-term decarbonization planning. RETScreen Expert was used to model baseline performance and evaluate multiple energy scenarios.
Scope
- Baseline energy use and GHG emissions modelling
- HVAC electrification vs. gas-fired systems
- Solar PV feasibility (1.3 MW rooftop system)
- 25-year lifecycle cost and emissions analysis
Measures Evaluated
- Office HVAC Electrification: Air source heat pumps replacing gas systems
- Manufacturing HVAC Upgrades: ERVs and electric unit heaters
- Onsite Renewable Energy: Large-scale rooftop solar PV
Outcomes
- Significant reductions in fuel consumption and GHG emissions
- Clear financial insights including payback and lifecycle value
- Strong alignment between sustainability goals and financial performance
- Data-driven prioritization of capital investments
RETScreen provided a transparent framework for informed decision-making and long-term planning.
Case Study: Temiskaming Shores – Waterfront Pool & Fitness Centre
WalterFedy supported the City of Temiskaming Shores in evaluating retrofit strategies for a critical community facility using RETScreen Expert.
Baseline Performance
- Annual energy consumption: 1,004,367 kWh
- GHG emissions: 123 tCO₂e
Key Measures Analyzed
Air Source Heat Pump Conversion
- 28% energy savings
- 57% GHG reduction
Funding Impact
The RETScreen model supported a successful application to the Green and Inclusive Community Buildings (GICB) program, providing clear, defensible evidence of energy and emissions benefits.
Supporting Your RETScreen Strategy
Whether you are:
– Planning capital upgrades
– Pursuing funding opportunities
– Developing a decarbonization roadmap
– Or managing a portfolio of facilities
WalterFedy can support you with RETScreen-based analysis that translates complex data into clear, actionable decisions.
Learn More About RETScreen
The RETScreen Clean Energy Management Software platform enables low-cost energy planning, implementation, monitoring, and reporting. It is available globally, with free and subscription-based options through Natural Resources Canada.
Contact Us
Patrick Darby
Patrick Darby
Patrick has been at the forefront of driving decarbonization and net-zero initiatives in both retrofits and new construction, significantly contributing to the advancement of sustainable practices within the building industry. His wealth of practical knowledge spans planning, design, construction, building operations, and sustainable methodologies.
As a Partner and Director of our Energy and Carbon Solutions group, Patrick seamlessly integrates his mechanical design expertise with a deep understanding of current and emerging sustainable practices. He leads his team in spearheading initiatives focused on Energy Audits, Engineering Studies, Energy and GHG planning, thermal and electrical metering, conceptual and schematic engineering design, and measurement and verification services across diverse sectors and project scopes.
Patrick’s technical proficiency and leadership capabilities enable him to comprehend client objectives and champion their journey toward sustainable transformation, supporting both short- and long-term initiatives in the pursuit of decarbonization and net-zero targets.
Philip Bradley
Philip Bradley
Philip is an Energy Engineer and Project Manager at WalterFedy, where he supports technical delivery and business development within the firm’s Energy & Carbon Solutions (ECS) practice. With over a decade of experience across high‑performance buildings and infrastructure, he works with municipal, institutional, and private‑sector clients on energy audits, greenhouse gas feasibility and reduction studies, existing building commissioning (EBCx), and geothermal system planning and implementation, helping translate analysis into practical, implementable strategies.
Philip’s background in mechanical systems, construction delivery, and project management spans Passive House–certified residential developments, municipal water and wastewater infrastructure, and heavy civil and foundation construction. This experience informs his implementation‑focused approach to energy and carbon planning, aligning performance objectives with constructability, operations, and long‑term value.