Economics9 min read
Inverter replacement and lifecycle costs
Realistic timing and budgeting for inverter replacement, the largest single lifecycle cost after installation, with a worked cost comparison.
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Long-form reporting on solar hardware, installation, economics, storage and policy.
Technology9 min read
Reactive power and voltage support from PV inverters
How modern PV inverters use reactive power and power factor control to support grid voltage, with worked examples of cos-phi and Q(U) droop behaviour.
Economics9 min read
Solar insurance and warranty claims
What PV insurance typically covers, how manufacturer warranties differ from performance guarantees, and how to actually make a claim.
Installation13 min read
Array layout and row spacing: the shading-density trade-off
A worked-trigonometry guide to inter-row shading geometry, solar altitude at the design hour, and how ground coverage ratio trades off against annual shading loss.
Installation13 min read
Ground-mount vs roof-mount PV systems: the real trade-offs
A technical comparison of ground-mount and roof-mount PV covering yield, tilt freedom, foundations, cost per kWp, cabling, permitting, and O&M access.
Technology12 min read
Potential-induced degradation: mechanisms and prevention in PV
PID can cut PV yield by 10-30% within seasons. This guide covers its mechanisms, field detection, prevention, and IEC TS 62804 testing.