How does the HelioScope Alternative Free calculate financial return and payback?

The solver models gross capital expenditure (CapEx), Section 48 Investment Tax Credits (ITC 30%–50%), 5-year MACRS accelerated depreciation, utility demand charge shaving, and levelized cost of energy (LCOE).

Does this calculator account for battery degradation over time?

Yes, it models standardized degradation curves (typically 1.5% to 2.2% annually for LiFePO4 cells) and accounts for battery pack augmentation cycles across a 20-to-25 year lifecycle.

What federal tax credits apply under the Inflation Reduction Act?

Under Section 48 and Section 45Y, qualifying clean energy and battery storage installations unlock a 30% base ITC, plus potential 10% domestic content and 10% energy community bonus adders.

100% Free HelioScope Alternative

Commercial Solar Layout & Production Sizer

Design commercial flat roof solar arrays without paying $1,200/year for HelioScope. Size row-to-row tilt shading spacing, DC capacity, and annual megawatt-hour generation.

Roof Area & Row Geometry

Usable Commercial Roof Area (Sq Ft)

Sq Ft

Racking Tilt Angle

Module Wattage

Turnkey EPC Cost ($/Watt)

Commercial Electric Rate ($/kWh)

Commercial Energy & Capex Profile

System Size 236 kW DC Array Rating

Modules 525 Bifacial commercial

Annual Output 342 MWh Megawatt-hours / yr

30% ITC Credit $130,980 Federal savings

Annual Bill Offset $61,560 Utility avoidance

Payback 5.0 Yrs Pre-MACRS breakeven

Need Accelerated 5-Year MACRS Depreciation?

Calculate 85% tax basis depreciation and write off 60%+ in Year 1.

MACRS Sizer

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Add this interactive tool to your real estate, construction, or financial website. Free embed code with zero branding locks.