Policy & Grid11 min read
Export limitation and active power control for PV systems
How export limits are enforced technically, from simple fixed caps to dynamic zero-export control loops, and what to check when a limiter is not behaving as expected.
Policy & Grid
Regulation, grid connection rules, net metering and market design.
The rules that decide whether a technically sound system can be connected and what its exported energy is worth. Grid codes, protection settings, metering arrangements and compensation schemes, treated as engineering constraints rather than politics.
What this hub answers
- What does a grid connection application require?
- How do anti-islanding and loss-of-mains protection work?
- What is the difference between net metering, net billing and a feed-in tariff?
- Why do inverters trip on over-voltage and who is responsible?
- How is export limitation implemented and verified?
Start here
Policy & Grid11 min read
Grid codes and inverter protection settings explained
How grid codes translate into the voltage, frequency and trip-time parameters programmed into a PV inverter, and why getting them wrong causes rejected commissioning.
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.
Calculators
Field checklists
All guides in Policy & Grid
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.
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.
Policy & Grid9 min read
Grid Connection and Export Rules, Explained
Why your inverter throttles at noon, what a G99 or VDE-AR-N 4105 application actually reviews, and how export limits are enforced.