Economics13 min read
Building the business case for commercial rooftop solar
How to model a C&I rooftop solar investment using load profiles, demand charges, and depreciation, with a worked payback calculation.
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Long-form reporting on solar hardware, installation, economics, storage and policy.
Policy & Grid12 min read
Community and shared solar: models and EU policy
How energy communities and shared solar schemes work under EU RED II/III, including allocation models, legal structures, and typical member economics.
Policy & Grid12 min read
Curtailment and negative electricity prices explained
Why wholesale electricity prices turn negative at midday in high-solar grids, how curtailment is dispatched, and what it means for new PV systems.
Installation13 min read
DC arc faults and rapid shutdown: physics, detection, and safety
How DC arc faults form, why AFCI detection differs from AC, and how module-level rapid shutdown architectures protect firefighters and equipment.
Policy & Grid14 min read
Solar Permitting in the EU: Deadlines, Exemptions and How to Avoid Losing Six Months
Since the revised Renewable Energy Directive, most rooftop installations sit under binding permitting deadlines and many are exempt altogether. Knowing which applies is worth more than any hardware choice.
Technology12 min read
EV charging with solar: surplus charging and load management
How to size, control, and integrate EV charging with a home PV system, covering surplus-only charging, charger types, and tariff interaction.