Europe Can Fit 614 GW Solar Within Demand

Europe can host about 614 GW of solar PV without ever exceeding hourly electricity demand, delivering roughly 678 TWh a year

A new study that matched hourly PV output to hourly consumption across 38 European countries shows the continent could safely integrate 614 GW of solar capacity – enough to generate 678 TWh annually – without any hour of over‑production. The authors used ENTSO‑E’s transparency platform for consumption data and PVsyst simulations for generation, defining the feasible capacity as the largest PV fleet whose output never surpasses national demand in any hour of the year.

The methodology relies on hour‑by‑hour matching, not annual averages

Most earlier assessments used yearly or seasonal averages, which hide the risk of midday curtailment. Hassan Gholami, senior consultant at Multiconsult and researcher at the University of Stavanger, combined hourly electricity consumption data from the ENTSO‑E transparency platform with PV‑syst simulated generation for each country, then identified the maximum PV fleet that never exceeds demand in any hour. This strict “hour‑by‑hour” constraint makes the 614 GW figure a conservative floor, not a ceiling; adding storage, demand‑side response, or electrification of heat and transport would push the number higher.

Germany leads the pack with a 106 GW feasible ceiling, followed by France and Italy

• Germany: 106 GWp feasible capacity
• France: 85 GWp
• Italy: 54 GWp
• Spain: 39 GWp
• Poland: 37 GWp
• United Kingdom: 36 GWp

Together these six nations account for over half of Europe’s total feasible solar. The study also flags the Netherlands and Cyprus as the only countries that have already exceeded their modeled caps (23.9 GW installed vs 18.6 GW cap; 606 MW installed vs 414 MW cap).

Southern Europe can absorb a larger share of its electricity demand from solar

When expressed as a share of total national consumption, Spain and Georgia top the list at 27 %, with Portugal and Italy close behind at 25 %. A cluster of countries – Greece, Switzerland, Ireland, Luxembourg, Romania, Moldova, Austria and Bosnia‑Herzegovina – sit around 23‑24 %. The lower‑latitude nations benefit from stronger, more consistent irradiance, allowing a higher proportion of daytime demand to be met by solar. In contrast, northern and eastern countries face tighter limits because winter demand peaks while solar output drops.

Grid modernization and flexibility are the next levers

Gholami stresses that grid upgrades, cross‑border interconnections, storage incentives, and demand‑side flexibility are essential to move beyond the 614 GW baseline. Electrifying heating and transport would raise daytime demand, letting more solar be absorbed without curtailment. Policy tools such as dynamic tariffs that reward flexible consumption, and continued support for distributed and building‑integrated PV, would also translate physical potential into actual generation.

What it means for Israel: a rough equivalence in capacity and payback

If Europe can generate 678 TWh from 614 GW of solar, the same energy could be produced in Israel with roughly 400 GW of PV (678 TWh ÷ 1 700 kWh kWp⁻¹ ≈ 398 GWp). Using the typical Israeli residential yield of 1 700 kWh/kWp/year, a 400 GWp fleet would supply about 680 TWh/year, matching Europe’s figure.

A 10 kWp rooftop system in central Israel produces ~17 000 kWh annually, worth about ₪8 160 at the residential tariff of ₪0.48/kWh. At an installation cost of ₪3 150/kWp, the simple payback is ≈ 3.9 years. Scaling that to the 400 GWp European‑equivalent would imply a very large national‑scale solar investment and substantial annual revenue at current tariffs, illustrating the massive economic upside if Israel were to pursue a comparable solar expansion.

Outlook: Europe’s baseline sets a roadmap for ambitious solar targets

The 614 GW figure provides policymakers a transparent, comparable baseline for planning. It shows where headroom remains (e.g., the Balkans and Eastern Europe) and where additional measures are needed (e.g., the Netherlands, Cyprus). As the EU works toward higher renewable shares, the study’s hour‑by‑hour approach will help align grid investments with realistic solar integration limits, while encouraging the complementary measures that can lift the ceiling even higher.

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What it means for Israel

• Capacity equivalent: 614 GW Europe ≈ 400 GW Israeli‑equivalent solar capacity.
• Financial illustration: A typical 10 kWp home system pays back in ~4 years; scaling to a national level would generate significant annual revenue at current tariffs.
• Policy implication: Israel can accelerate its 2030 renewable goal by encouraging demand‑side flexibility and storage, mirroring Europe’s next steps.

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For a deeper dive into Israeli solar economics, try our solar ROI calculator and explore the latest market data on our data page.

Sources & further reading

• TYNDP 2024: Europe's electricity infrastructure plan. - entso-e
• [PDF] ICS 2024 ANNUAL REPORT - ENTSO-e
• (PDF) The ENTSO-E Transparency Platform – A review of Europe's most ambitious electricity data platform
• Books of Extended Abstracts - ICOLD Austria2018 | PDF | Dam - Scribd
• Europe could integrate 614 GW of solar within hourly demand limits - pv...