Proposal-ready equipment intelligence

Compare solar equipment without relying on brand hype

Use exact model numbers and contract coverage. The best component is the one that fits the roof, electrical design, operating goal, local service network, and total system economics.

Value, mainstream, and premium modules

Solar panels

Compare these fields

Exact model number
Power and efficiency
Year-one and annual degradation
Product and performance warranty
Temperature coefficient
Local replacement availability

A brand name alone is not enough; manufacturers sell multiple product lines with different specifications.

String, optimized string, and microinverter systems

Inverters

Compare these fields

Exact inverter and optimizer model
Continuous and peak output
Clipping assumptions
Rapid-shutdown design
Monitoring access
Labor coverage and replacement process

A long product warranty may not cover truck rolls, labor, roof access, or lost production.

AC-coupled and DC-coupled storage

Home batteries

Compare these fields

Usable kWh
Continuous and surge kW
Round-trip efficiency
Backup circuits or whole-home design
Throughput and retention warranty
Expansion and generator compatibility

Capacity alone does not show whether a battery can start large loads or support the intended backup panel.

The contract should identify every major model

Reject vague descriptions such as “Tier 1 panels,” “premium inverter,” or “13 kWh battery.” Ask for exact manufacturer and model numbers, data sheets, warranty documents, approved substitutions, monitoring ownership, and responsibility for labor if a component fails.

Compare proposal equipment