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technical articleAcceptance Tests for Energy-Efficient Exterior Luminaires
Acceptance testing should verify covered exterior-luminaire scope, ENERGY STAR or FEMP status at contract award, the correct FEMP LER threshold, recognized test evidence, and any written exception. The cited sources support U.S. federal procurement requirements only; other buyers may use them as recommended criteria if adopted by contract.
Cinn Song
technical articleEnergy Storage Procurement Scope: Battery, Thermal,…
Energy-storage procurements should require technology and scope separation whenever broad storage wording could mix electrochemical batteries, thermal storage, hybrid generation-plus-storage, or standalone grid-connected storage.
Cinn Song
technical articleWhat handover responsibilities should require the PV…
Require bidders to hand over both the PVWatts response records and the SAM AC degradation table when those records support the bid’s energy and financial model. PVWatts documents the modeled inputs, weather basis, warnings, errors, version, and outputs; SAM documents how annual AC degradation is applied in value or schedule mode. Product performance, savings, prices, certifications, and country-specific procurement rules remain unknown unless separately evidenced.
Cinn Song
technical articleAcceptance Check for Custom Battery Dispatch Submissions
The acceptance check should validate completeness and sign convention: one numeric kW value must be present for each simulation time step, with positive kW used for discharge and negative kW used for charge, based on SAM PVWatts Battery custom-dispatch guidance.
Cinn Song
technical articleStorage Financial Model Assumptions for BTM vs FOM
State the SAM financial model as a primary assumption. SAM classifies Residential, Commercial, and Third Party Ownership as behind-the-meter bill-reduction cases, while PPA and Merchant Plant are front-of-meter revenue-generation cases.
Cinn Song
technical articlePVWatts Handover Records for Tracking, Tilt, Azimuth and AOI
A PVWatts handover should preserve the modeled array type, tracking/backtracking choice, whether tilt and azimuth were active or not applicable, GCR where it affects self-shading, and the hourly angle-of-incidence output with related irradiance and power results. The cited documents do not define a required commercial handover format or prove any SOLARTODO product performance.
Cinn Song