Calculator Methodology & Assumptions

1. User-supplied inputs

The calculator uses the city, product selection, facade area, traditional facade cost, electricity rate, and cap rate entered by the user. Electricity rate and cap rate are not assumed by Powerglass.

2. Energy generation

Energy yield estimates are based on NRCan RETScreen photovoltaic resource data for vertical south-facing facade installations. The CdTe conversion factor used for the reference model is 0.155 kWp/m2. Actual performance varies with facade orientation, shading, soiling, system degradation, and local conditions.

Yield values assume a vertical south-facing facade with no significant horizon obstruction.

3. Federal ITC

The model applies a 30% Clean Technology Investment Tax Credit (federal Budget 2023) to eligible BIPV project cost. Eligibility can depend on project timing, asset classification, and prevailing wage compliance. Confirm with a qualified tax advisor before relying on any estimate.

4. CCA tax shield

The CCA model uses Class 43.2 accelerated depreciation for clean energy equipment. Year 1 CCA is calculated as (total BIPV investment minus ITC) x 0.25, reflecting the half-year rule.

5. Project economics

Net capital premium, payback, 25-year energy value, and asset-value illustrations are planning estimates only. They are not tax advice, legal advice, investment advice, or a formal appraisal.

6. Source and review cadence

• Yield source: NRCan RETScreen photovoltaic resource data.
• ITC rate last reviewed: June 2026.
• CCA method last reviewed: June 2026.
• Calculator methodology last reviewed: June 2026.

For legal terms governing calculator use, see the Terms of Use.