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HYBRID PV + BESS

Turn Curtailment into Net Profit

Solar plants in Greece lost about 20% of their revenue in 2025, and in April 2026 18.4% of renewable output was curtailed. Don't let your energy — and your profits — go to waste.

Multiply your returns with hybrid BESS solutions designed for the Greek market.

Avoid the long wait for new grid connection terms. We have a ready DC – Coupling solution for your project.

24-HOUR PRICE SPREAD
Average minimum (12:00–13:00) vs average maximum (20:00–21:00)
2024128€/MWh
2025143.4€/MWh
21/07/2026 · example day~181€/MWh
In Greece, the difference between the average minimum price (12:00–13:00) and the average maximum price (20:00–21:00) over 24 hours rose from 128€/MWh in 2024 to 143.4€/MWh in 2025. On 21 July 2026 the price fell to ~39€/MWh during solar hours and rose above 220€/MWh in the evening.
THE MARKET IN NUMBERS · 2026

In eight months, 2026 curtailment exceeded all of 2025

Demand stays flat while solar capacity keeps growing. Midday energy is in surplus — storage shifts it to the evening.

RENEWABLES CURTAILMENT BY YEAR
0.9 TWh
2024
1.87 TWh
2025
1.9 TWh
2026 Jan–Aug
3.3–3.7
2026 est.
By August 2026, 1,905 GWh were curtailed — 8.1% of renewable output and already more than all of 2025.
MONTHLY CURTAILMENT (GWh)
20252026
5
214
Jan–Feb
229
196
Mar
359
475
Apr
383
418
May
In April 2026, 18.4% of renewable output was curtailed — a monthly record. Curtailment is concentrated between 09:00 and 15:00.
642hours
Zero or negative prices, Jan–May 2026
Versus 124 hours in the same period of 2025 — five times more.
~50%
Average PV revenue loss in April 2026
Compared with April 2025, for plants under state support. Some producers reported losses of up to 60%.
0–300€/MWh
Price swing within a single day
In September 2026 — one of the most attractive spreads in Europe for storage.
800MW
Standalone batteries in operation
Against a Ministry target of 4 GW by 2028 — plenty of room for new projects.
Sources: IPTO via The Green Tank (2025, Mar–May 2026), Balkan Green Energy News (May & Oct 2026), AUTh / pv magazine (2026 estimate), Solarplaza (Sep 2026).
WHAT YOU GAIN

The benefits of a hybrid PV + BESS plant

BENEFIT 01 100% Recover Lost Production Stop losing energy to grid curtailment — in April 2026, 18.4% of renewable output was curtailed. Store it during curtailment and sell it when demand peaks.
BENEFIT 02 24/7 Capture Premium Prices Make the most of a dynamic energy market. Automatically shift your grid export to periods of high prices and demand.
BENEFIT 03 MULTIPLE Revenue Streams Earn extra revenue by taking part in the balancing markets (mFRR, aFRR) and grid stability services through our partners.
BENEFIT 04 25-50% Annual ROI With 2026 curtailment already above all of 2025, standalone PV will struggle. Adding batteries keeps your investment profitable.
THE CHALLENGE

Why is standalone PV losing its edge?

The Greek energy market is changing. In 2025, 6.6% of renewable output was curtailed and PV producers lost about 20% of their revenue. Without storage, PV owners see their profits shrink — while the grid is forced to reject green energy.

01An estimated 3.3–3.7 TWh of curtailment in 2026, almost double 2025
02Negative energy prices due to oversupply
03Grid saturation and the need for smarter management
~20%PV revenue loss in 2025
DC COUPLING

Add a battery to your existing PV plant, without new grid connection terms

How the battery is connected decides how fast it can start operating. With DC coupling, the project moves ahead without waiting for the grid operator.

AC couplingCONNECTION TERMS REQUIRED

The battery has its own inverter and connects on the AC side. For the grid operator, it counts as new capacity at the connection point.

PV array
Battery
DC
DC
PV inverter
Battery inverter
AC
Connection point
GRID EXPORT
+ new capacity
Connection limit
The battery adds capacity beyond the limit → new connection terms
1Apply for new connection terms
2Wait for the grid operator to respond
3Connection contract and possible grid works
4Installation and operation
DC couplingNO NEW CONNECTION TERMS

The existing inverter is replaced with a hybrid one, which connects both the PV array and the battery on the DC side. Grid export capacity stays the same.

PV array
Battery
DC
Hybrid inverter
AC
Connection point
GRID EXPORT
Connection limit
Export stays within the limit → no new terms
1Engineering and sizing
2Supply of hybrid inverter and battery
3Inverter replacement, installation and operation
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