By the end of January 2026, Germany had already installed 119.55 GW of photovoltaic capacity—yet the start of 2026, with 1,012 MW added in January, was the weakest in four years. While the residential PV market is experiencing a structural decline, ground-mounted systems and large-scale projects are dominating new installations, accounting for ~60% of the total market. For investors and companies, the market analysis shows: 2026 is the last year with 20-year fixed EEG feed-in tariffs before the planned transition to the CfD system in 2027—and the upfront costs for new PV systems are historically low.

Negative electricity prices are no longer a rare occurrence: In 2025, Germany set a new record with 573 hours of negative electricity prices—and on some summer days, nearly all solar power generation was fed into the electricity exchange at negative prices. PV investors who understand the cause of this phenomenon, why the Solar Peak Act has changed the rules of the game, and which storage strategy unlocks the opportunity behind it have a clear advantage.

According to a white paper by 8Energies, Enspired, and Goldbeck Solar (February 2026), the combination of a PV system and battery storage—known in technical terms as “co-location”—increases the internal rate of return (IRR) of solar parks by up to 29%. For companies, the payback period drops to 3–5 years, while for investors, revenue streams multiply to as many as six. This article explains market data, technology, sizing, and the regulatory window of 2026–2028—with concrete figures.

Italy’s solar market is set for structural growth in 2026—but the Decreto Bollette, TIDE reform, and regulatory uncertainty make blind investments risky. FER-X auctions with 818 bids for 10+ GW, a national storage target of 58 GWh by 2030, and megaprojects like the 3-GWh Airengy storage project in Brindisi show that the market is polarizing between secure winners and unprotected losers. What investors need to know in 2026—and why the German market model remains the better foundation for many.

The 2026 EEG feed-in tariff is 7.78 ct/kWh (partial feed-in) or 12.34 ct/kWh (full feed-in)—with a semi-annual reduction and a fundamental system change starting in 2027. Anyone who commissions a photovoltaic system by December 31, 2026, secures 20 years of guaranteed support under the proven EEG system—without the CfD repayment obligation that applies to all new systems starting in July 2027. This guide explains all current feed-in rates, historical trends since 2000, the difference between full and partial feed-in, and the consequences of the CfD reform for investors and businesses.

In 2025, solar power became Germany’s second-largest source of electricity for the first time, surpassing lignite. This marks a historic turning point—and sends a clear signal to anyone considering investments in renewable energy.

On January 22, 2026, a new market for instantaneous reserve capacity was launched in Germany. For the first time, battery storage systems can participate in this system service and thereby generate additional revenue. What this means for PV investors—opportunities, risks, and specific figures.