Solar Mounting Structures: How to Specify the Right System
How to choose a solar mounting system: roof type and attachment, ballast vs penetration, ground foundations, ASCE 7 loads, coating class, tilt and spacing.
Equipment Guides
Technical buying guides for solar modules, inverters, batteries, mounting and electrical equipment — the specifications and documents to confirm before ordering.
Solar Module Warranty: What It Covers and How Claims Work
How module warranties actually work: product vs performance cover, what voids a claim, how output is measured, and the evidence pack that gets a claim paid.
Why Solar Equipment Prices Vary: What Actually Moves the Quote
What drives solar equipment pricing in 2026: module price bands, power bins, BOS and installation, storage cell costs, quantity tiers and compliance.
LV Switchgear: How to Specify a Board That Passes Inspection
How to specify LV switchgear: rated current, short-circuit rating, form of separation, protection discrimination, IP rating and IEC 61439 type testing.
Distribution Transformers: How to Specify One Correctly
How to read a transformer nameplate: rating, vector group, impedance, losses, cooling and the IEC vs ANSI choice that decides the test report.
Residential Solar + Battery: What Installers Should Specify
Residential storage is sold on backup and bought on self-consumption. Getting the specification right means designing for the second and explaining the first.
Solar and Storage for EV Charging Sites: What to Specify
On an EV charging site, the grid connection is usually the constraint, not the chargers. Here is what to specify before the utility quote arrives.
Solar Plant Underperformance: A Diagnostic Sequence
Before assuming a fault, establish whether the plant is actually underperforming. Then work the causes in the order that finds them fastest.
TOPCon vs PERC vs HJT: What B2B Buyers Should Specify
Module efficiency is the least useful number on the datasheet. Here is what actually separates TOPCon, HJT and PERC in 2026.
Balance of System: The B2B Equipment Buying Guide
Modules and inverters get the attention; balance of system is where budgets break. A practical BOS guide for commercial projects.