December 1, 2017 Germany Expands Renewable Energy Development Programs

On December 1, 2017, Germany overhauled its renewable energy policy through the updated Renewable Energy Act (EEG 2017). This reform replaced fixed government tariffs with a competitive auction system, letting the market determine funding rates instead. It also opened 5% of new annual renewable capacity to EU neighbors, roughly 300 MW per year. Renewables now make up 38% of Germany's net electricity production, up from just 6% in 2000. There's much more to this story worth exploring.

Key Takeaways

• Germany's EEG 2017 replaced fixed tariffs with a competitive auction system starting January 1, 2017, driving market-based renewable energy development.
• Renewable energy reached 38% of Germany's net electricity production, a dramatic rise from just 6% in 2000.
• Germany opened 5% of new annual renewable capacity to EU neighbors, allowing approximately 300 MW yearly for European installations.
• Future targets include up to 10 GW of new onshore wind annually and expanding solar capacity from 82 GW to 215 GW.
• Germany planned 4,800 km of new transmission lines and major projects like SuedLink to support growing renewable energy loads.

Why Germany Overhauled Its Renewable Energy Policy in 2017

Germany's 2017 Renewable Energy Sources Act (EEG 2017) marked a significant shift in how the country funded its clean energy growth—moving away from fixed government-set tariffs to a competitive auction system, where funding levels for renewable electricity are determined by the market. Since January 1, 2017, market-driven incentives have replaced the old top-down subsidy model, introducing competitive dynamics that push developers to offer the most cost-effective proposals. You can see how this approach reduces government spending while encouraging efficiency across the sector. The EEG 2017 also opened 5% of new annual renewable capacity—roughly 300 MW per year—to installations in other European Member States, signaling a cross-border strategy rather than a purely domestic one. This overhaul repositioned Germany's energy transition on firmer, market-based ground.

How the EEG 2017 Replaced Fixed Tariffs With Competitive Auctions

Before the EEG 2017, Germany's renewable energy support relied on fixed feed-in tariffs—government-set rates that guaranteed developers a predetermined price for every kilowatt-hour they fed into the grid. That model changed on January 1, 2017, when the EEG 2017 replaced those fixed rates with competitive auction benefits that let the market determine funding levels. Under this system, developers bid against each other, and the lowest bids win support contracts. You'll notice this shift drives down costs by replacing guaranteed payouts with market based incentives that reward efficiency. The reform also opened 5% of new annual renewable capacity—roughly 300 MW per year—to installations in other European Member States, pushing the energy transition beyond Germany's borders and toward a more integrated European approach. Similar market transformation for renewable energy had been observed through NREL's expanded research infrastructure, which helped close the gap between laboratory innovation and large-scale commercial deployment.

What the Auction System Changed About Renewable Funding in Germany

When the auction system took effect, it fundamentally changed how Germany allocated renewable energy funding. Instead of receiving guaranteed fixed tariffs, developers now competed against each other, driving down costs through competitive pricing impacts. You can see how this shift forced the industry to operate more efficiently and strategically.

Here's what the auction system implications meant in practice:

• Market-determined rates replaced government-set tariffs starting January 1, 2017
• Competitive bidding pressured developers to lower project costs
• 5% of new annual capacity opened to other European Member States
• ~300 MW per year became available for cross-border renewable participation

You're now looking at a funding model that rewards efficiency over entitlement, making Germany's energy transition more economically disciplined and regionally integrated.

Why Germany Shared 5% of Its Renewable Capacity With EU Neighbors

By embedding energy solidarity into its legal framework, Germany signaled that renewable expansion works better as a continental effort. Allowing neighboring countries access to a portion of Germany's annual capacity encourages cost competition, cross-border investment, and stronger grid integration. Rather than treating renewables as a purely domestic achievement, Germany positioned itself as a cooperative partner within the larger European clean energy framework.

How Renewables Reached 38% of Germany's Net Electricity Production

Germany's renewable energy share didn't reach 38% of net electricity production overnight — it climbed steadily from just 6% in 2000, driven largely by wind, solar, and biomass generation. You can see how decades of policy investment shaped this milestone, with the 2017 auction system effects pushing market-based competition to replace fixed tariffs.

Renewable integration challenges didn't disappear, but Germany kept expanding capacity regardless:

• Wind led the charge as the dominant renewable source
• Solar grew consistently alongside biomass contributions
• The shift to auctions introduced competitive pricing pressure
• Grid modernization worked to keep pace with rising renewable output

Which Energy Sources Powered Germany's 2017 Renewable Mix

Behind that 38% figure were three main energy sources doing the heavy lifting: wind, solar, and biomass. Together, these renewable technologies displaced a significant portion of fossil fuels like natural gas that Germany had previously relied on for electricity generation.

Wind led the mix, benefiting from years of onshore and offshore expansion. Solar followed, backed by strong rooftop and ground-mounted installations built up over the previous decade. Biomass rounded out the top three, providing dispatchable power that wind and solar couldn't always guarantee.

You can think of these three sources as the foundation Germany built its energy transition on. While natural gas still played a supporting role in 2017, the growing dominance of these renewable technologies made it increasingly clear that role would continue to shrink.

The Long-Term Expansion Path the 2017 Reform Made Possible

The 2017 reform didn't just reshape how Germany funded renewables — it laid the groundwork for a far more ambitious buildout. By shifting to competitive auctions and embracing market integration, Germany set the stage for decades of aggressive expansion focused on long term sustainability.

Here's what that expansion path looks like:

• Wind capacity targets reach up to 10 GW of new onshore installations per year
• Solar capacity is set to climb from roughly 82 GW to 215 GW
• 4,800 km of new transmission lines will carry renewable power across the country
• 2% of national land is dedicated specifically to wind energy generation

You can see how the 2017 framework wasn't an endpoint — it was a launching pad for Germany's full energy transformation.

Germany's Onshore Wind and Solar Targets After the 2017 Shift

After the 2017 reform cleared the way, Germany set concrete targets for both onshore wind and solar. You'll see the country aiming for up to 10 GW of new onshore wind installations per year by the end of the 2020s. To hit that mark, Germany planned to simplify permitting, increase auction volumes, and recalibrate species protection rules to balance conservation with deployment.

On the solar side, Germany's solar targets called for expanding capacity from roughly 82 GW to 215 GW. Reforms covered ground-mounted solar, rooftop PV, energy storage, and grid connections. Larger rooftop systems above 750 kW had to enter the EEG tender process, while new categories for agri-PV, floating PV, and parking PV opened additional pathways for faster buildout.

How Germany Plans to Upgrade Its Grid for Higher Renewable Capacity

Scaling up wind and solar at this pace means Germany's grid can't stay as it is. You're looking at a country that's committing to serious infrastructure investment to move power from windy northern coasts to energy-hungry southern regions. Grid modernization isn't optional—it's the backbone of the entire transition.

Here's what Germany's planning:

• ~4,800 km of new onshore transmission lines to handle higher renewable loads
• ~2,500 km of grid reinforcements across existing corridors
• SuedLink and SuedOstLink, two major north–south transmission projects, to close the regional gap
• New offshore grid connections in the North Sea and Baltic Sea for expanding wind farms

The Climate and Transformation Fund backs much of this spending, keeping the buildout financially grounded.

What Germany's Renewable Trajectory Means for European Energy Policy

Germany's domestic buildout doesn't stop at its borders. The EEG 2017 opens 5% of new annual renewable capacity — roughly 300 MW per year — to installations in other European Member States. That's strategic collaboration in action, signaling that Germany sees renewable expansion as a shared European effort, not just a national priority.

For you as an observer of European energy policy, this matters. Germany's shift to competitive auctions and market integration pushes neighboring countries toward similar frameworks, aligning support mechanisms across borders. When Europe's largest economy moves toward market-based renewable funding, others follow.

Germany's trajectory also pressures EU partners to accelerate grid interconnection and harmonize energy regulations. You're watching a policy model that could reshape how Europe collectively meets its clean energy targets.