A July window into Israel’s solar production data

Two Noga files contain more than half a million observations. They offer a starting point for monthly reporting, provided we keep their coverage and units in view.

Select an underlined term for a short explanation.

Before a monthly solar headline comes a less visible task: deciding what the spreadsheet actually measures. SPFI examined Noga’s raw PV files for July 2025 and July 2026. Each contains 258,912 records, covering 31 days and 174 named generating units. Those observations open a detailed window into part of Israel’s solar fleet, but the title of the collection sets an essential boundary: these are high-voltage PV facilities only.

Noga describes this series as half-hourly data. Our check found 48 records for every listed unit on every day, with no duplicate date-time-unit keys. That is useful evidence of a complete table at its stated recording frequency. It does not independently prove that every measurement is accurate, or that the table includes every solar installation in Israel. Small rooftop systems cannot simply be assumed to appear in a series labeled high voltage.

There is a second lesson in the column headings. The numeric field is called “PV,” without an explicit MW or MWh unit in the CSV header. We therefore make no conversion to a national energy total. As a limited comparison, setting the sum of that field in July 2025 to an index of 100 gives 99.58 in July 2026, assuming its measurement basis is unchanged. This is a calculation on the published field, not an official growth statistic.

The names also need checking. Both files contain 174 unit names, but an exact text comparison initially finds a mismatch: “SOLAR EIN HAROD” becomes “Solar Ein Harod.” Ignoring capitalization makes the name lists match. That small editorial check prevents a spelling change from being reported as a newly connected plant. Matching names still cannot establish whether equipment was expanded or measurements were revised.

A useful monthly report must therefore keep its coverage beside its result. These files support a reproducible look at a defined group of facilities. They do not explain a change through weather, curtailment or maintenance, and they do not establish Israel’s overall solar electricity share. For future reports, a verified unit definition and the appropriate nationwide series would allow the next step from this bounded data notebook to national energy totals.