Solar yield and irradiation in Morocco

How many kWh does each installed kWc produce, depending on city, roof tilt and orientation? Here is the full table our own estimator falls back on — published unfiltered, for anyone to cite or verify.

The best setting, city by city

Theoretical optimum by city

Agadir · lat. 30.42°

1,687 kWh/kWc/yr

at 30° tilt, South-facing

Marrakech · lat. 31.63°

1,651 kWh/kWc/yr

at 30° tilt, South-facing

Casablanca · lat. 33.59°

1,651 kWh/kWc/yr

at 30° tilt, South-facing

Rabat · lat. 34.02°

1,630 kWh/kWc/yr

at 30° tilt, South-facing

Tangier · lat. 35.77°

1,634 kWh/kWc/yr

at 30° tilt, South-facing

The full table

Yield (kWh/kWc/year) by city

Each table crosses roof tilt (rows) with panel orientation (columns) for one city. Azimuth: South = due south (the optimum in Morocco), South-East/South-West = ±45°, East/West = ±90°.

Agadir — latitude 30.42°

Solar yield (kWh/kWc/year) in Agadir, by tilt and orientation
Tilt	East	South-East	South	South-West	West
0°	1,499	1,499	1,499	1,499	1,499
5°	1,483	1,528	1,553	1,545	1,507
10°	1,463	1,550	1,599	1,583	1,510
15°	1,438	1,563	1,635	1,612	1,506
20°	1,411	1,571	1,662	1,634	1,497
25°	1,381	1,570	1,679	1,646	1,484
29°	1,354	1,563	1,686	1,649	1,469
30°	1,347	1,561	1,687	1,649	1,464
35°	1,311	1,547	1,685	1,645	1,439

Marrakech — latitude 31.63°

Solar yield (kWh/kWc/year) in Marrakech, by tilt and orientation
Tilt	East	South-East	South	South-West	West
0°	1,462	1,462	1,462	1,462	1,462
5°	1,462	1,502	1,517	1,498	1,456
10°	1,456	1,534	1,562	1,526	1,444
15°	1,443	1,557	1,598	1,545	1,427
20°	1,428	1,573	1,625	1,557	1,406
25°	1,408	1,579	1,643	1,563	1,383
29°	1,388	1,579	1,650	1,560	1,361
30°	1,384	1,578	1,651	1,559	1,355
35°	1,356	1,573	1,649	1,548	1,324

Casablanca — latitude 33.59°

Solar yield (kWh/kWc/year) in Casablanca, by tilt and orientation
Tilt	East	South-East	South	South-West	West
0°	1,458	1,458	1,458	1,458	1,458
5°	1,450	1,493	1,514	1,500	1,460
10°	1,436	1,520	1,560	1,533	1,455
15°	1,417	1,539	1,596	1,558	1,444
20°	1,396	1,551	1,624	1,575	1,429
25°	1,369	1,553	1,642	1,585	1,411
29°	1,346	1,550	1,650	1,586	1,392
30°	1,341	1,549	1,651	1,585	1,387
35°	1,309	1,540	1,650	1,577	1,360

Rabat — latitude 34.02°

Solar yield (kWh/kWc/year) in Rabat, by tilt and orientation
Tilt	East	South-East	South	South-West	West
0°	1,445	1,445	1,445	1,445	1,445
5°	1,435	1,477	1,498	1,486	1,447
10°	1,419	1,502	1,543	1,519	1,444
15°	1,399	1,519	1,578	1,544	1,435
20°	1,377	1,529	1,605	1,562	1,422
25°	1,350	1,531	1,622	1,572	1,406
29°	1,327	1,527	1,629	1,574	1,388
30°	1,322	1,525	1,630	1,573	1,383
35°	1,289	1,517	1,629	1,566	1,358

Tangier — latitude 35.77°

Solar yield (kWh/kWc/year) in Tangier, by tilt and orientation
Tilt	East	South-East	South	South-West	West
0°	1,437	1,437	1,437	1,437	1,437
5°	1,429	1,472	1,493	1,479	1,437
10°	1,415	1,500	1,540	1,512	1,433
15°	1,398	1,520	1,577	1,538	1,423
20°	1,378	1,534	1,605	1,556	1,408
25°	1,353	1,539	1,624	1,567	1,392
29°	1,334	1,538	1,633	1,570	1,375
30°	1,328	1,537	1,634	1,570	1,370
35°	1,298	1,530	1,634	1,563	1,346

Source: values derived from PVGIS (European Commission, Joint Research Centre), computed for the 5 cities in our service area and generated via our generate-yield-table.mjs script. They include a 14% system loss (wiring, inverter, heating, soiling) — the same rate our online estimator uses. An intermediate latitude is interpolated between the two surrounding cities.

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