Solar and Battery System Sizing Proposal

What a good one includes

• A detailed consumption profile analysis using the prospect's actual utility interval data to establish an accurate baseload baseline.
• Optimal system sizing specifications detailing the exact panel wattage, inverter capacities, and battery storage modules recommended to meet the target offset.
• A visual energy flow diagram illustrating how generated solar energy is split between direct consumption, battery charging, and grid export.
• A transparent financial payback and ROI schedule highlighting net-present-value, internal rate of return, and a clear month-by-month payback timeline.
• An accurate utility rate tariff integration that compares pre- and post-solar utility bills while accounting for specific local time-of-use rates and net metering policies.
• A defined battery dispatch strategy explaining the operational mode, whether configured for self-consumption maximization, peak-shaving, or emergency backup.

Common mistakes to avoid

• Relying on generic regional utility averages instead of mapping the prospect's actual interval data, which leads to highly inaccurate storage sizing.
• Failing to account for annual solar panel degradation and battery capacity loss over the system's lifespan, resulting in overly optimistic long-term financial projections.
• Omitting fixed grid-connection fees, non-bypassable charges, or minimum monthly bills, which makes the post-solar savings calculation look artificially high.
• Overwhelming the prospect with deep electrical jargon in the primary pages instead of leading with clear financial savings and environmental impact metrics.

Frequently asked questions