Germany is proposing major changes to how electricity grid costs are shared as the country adapts to growing renewable energy and storage deployment
The reforms have drawn mixed reactions, with industry stakeholders differing on their potential impact on solar, batteries, and consumer participation
Rooftop solar has emerged as a key focus of the debate surrounding Germany’s proposed grid charge reforms
Solar industry groups raise concerns that higher fixed fees, possible feed-in tariff changes, and other reforms could weaken incentives for rooftop solar and battery storage
Germany's proposed reform of electricity grid charges – the General Network Charges System for Electricity (AgNes) – has sparked a debate across the country's solar industry. Companies and industry associations differ on their views on the potential impact of the proposed changes on solar deployment, battery storage, and feed-in tariffs (FIT).
The proposals, published by the Federal Network Agency (Bundesnetzagentur) on May 27, 2026, would introduce changes to how grid costs are shared among consumers, electricity producers, and storage operators. The regulator says the reforms are intended to create a fairer allocation of costs, encourage flexibility, and reduce grid congestion to reflect the growth of renewable energy, storage, and flexible electricity use.
“The current system of network charges no longer reflects the needs of today’s and tomorrow’s energy supply. With a new network charge system, we aim to improve cost efficiency and achieve a fair distribution of costs,” explained Klaus Müller, President of Bundesnetzagentur. “Our goals: to allocate costs where they arise; to put a price on scarce capacity; to avoid congestion management costs; to support flexibility and curb network expansion.”
Proposed Reforms to Reshape Grid Charges
Under the AgNes proposal, prosumers – households that generate their own electricity, typically through rooftop solar systems – would face a higher fixed grid fee, contributing more to grid financing. The agency calls it ‘appropriate’ since this reflects their continued reliance on the electricity network, even if they produce their own electricity. The additional cost is expected to remain below €100 per year, depending on location.
According to the proposal, new power generation systems would pay a moderate annual capacity-based grid charge from January 1, 2029, while feed-in systems smaller than 30 kW connected to the low-voltage grid and plug-in solar devices would be exempt. Existing generation systems would remain exempt from the charge for 20 years from their initial commissioning date.
“Those who generate their own electricity currently contribute less to financing the grid. But they too rely on the grid when the sun isn't shining and their storage is empty. We therefore want to make electricity producers contribute a little more to the costs. That's a matter of fairness,” added Müller.
For large commercial and industrial (C&I) consumers with over 100,000 kWh of annual consumption, the agency proposes moving them to a capacity-based pricing system, in addition to the existing energy charge for consumption up to the ordered capacity. It says this arrangement promotes flexibility and removes financial constraints on temporarily higher electricity consumption during periods of very low prices. Existing baseload regulation will continue to remain in force for existing customers until December 31, 2031.
From January 1, 2029, new battery storage projects in Germany are expected to pay a modest annual grid capacity charge, while home batteries remain exempt from separate grid fees, and existing storage projects may retain current exemptions for a period.
“Storage facilities react flexibly to price signals, and we want to prevent them from exacerbating grid congestion. We also want to involve storage facilities in grid financing. We propose that capacity charges should only be payable after the current special regulations expire,” explained Müller.
The agency also plans to develop dynamic grid charges to encourage flexible electricity use and reduce grid congestion costs. A detailed framework will be assessed by 2027.
Industry Differs on Pace of Transition
Bundesnetzagentur’s proposed reforms have been met with differing views, even if it is seen as moving in the right direction. While many stakeholders support the long-term goal of a more flexible and market-oriented electricity system, opinions differ on how quickly the transition should occur and whether existing incentives should remain in place until supporting infrastructure and market mechanisms are fully developed.
The German Solar Association (BSW-Solar) is not too happy with the agency’s proposals, as it believes that higher fixed grid charges could increase costs for solar prosumer households by as much as €150 per year. It will also reduce incentives for grid-friendly use of battery storage while placing a considerable burden on solar power plant operators.
Referring to a study from the Berlin University of Applied Sciences and Economics, the association argues, “With the help of battery storage, solar roofs do not create any additional need for grid expansion. When electrical consumers such as electric cars or heat pumps are used, the existing grid infrastructure can even be used more efficiently through the use of solar power plants and battery storage, and the need for grid expansion can be reduced through prosuming.”
It also criticized discussions about reducing or abolishing the feed-in tariff (FIT) for new rooftop solar systems from 2027, arguing that direct marketing remains too costly and impractical for many small installations. Businesses and civil society groups have been demanding continued subsidy support for rooftop solar, lest it slow down residential solar adoption and undermine Germany’s climate goals (see German Alliance Urges Government To Keep Rooftop Solar Support).
Another industry group, the German Association of New Energy Industries (BNE), calls some incentives in AgNes – particularly for prosumers and smaller rooftop solar PV systems – ‘perverse’. It cautions that mandatory basic charges and a prosumer surcharge may discourage investment in rooftop solar systems while favoring smaller or zero-export installations. While welcoming the inclusion of storage and co-location projects, it warned that uncertainty during the transition period could delay storage connections.
BSW-Solar further warned that the combined effect of higher costs, smart-meter obligations, reduced support during periods of negative electricity prices, and potential changes to feed-in remuneration could slow Germany's solar expansion.
Energy company 1KOMMA5° has welcomed several aspects of the proposals, calling them ‘mostly good’ for prosumers. Its Co-Founder and CEO Philip Schröder is particularly pleased with the exemption of home battery systems from separate grid charges and the prospect of greater participation by residential storage systems in electricity markets.
Schröder says that further progress on balancing services and direct marketing frameworks in 2027 will make household solar-plus-storage systems more profitable and better integrated into the electricity market.
Responding to the comments from 1KOMMA5° on LinkedIn, HagerEnergy GmbH CEO Dr. Andreas Piepenbrink said he does not share its enthusiasm. While agreeing that the overall regulatory direction is positive, he cautions that implementation challenges could delay the benefits.
Piepenbrink pointed to previous reforms that have faced slow adoption by distribution network operators. He argues that Germany should retain feed-in tariffs – one of the greatest successes of the energy transition – since it provides investment security, until direct marketing systems, billing processes, and smart meter deployment are fully established.
“Direct marketing as a replacement? Not scaled today, relatively much too expensive for small systems, smart meters are missing anyway. Anyone who now overturns the EEG remuneration is unsettling a market that needs predictability out of pure model aesthetics,” stated Piepenbrink in a LinkedIn post. He added, “Dear fans, dear PV storage friends, defend yourselves against the nonsense that the feed-in tariff can be replaced via direct marketing without a meaningful scaling.”
BSW-Solar has called on the regulators and policymakers to better align grid charges and support mechanisms while rewarding behavior that benefits the electricity system.
Implementation Timeline Designed to Support a Smooth Transition
According to the agency, the new regulation is needed because a ruling by the European Court of Justice requires Germany to replace existing electricity network charge rules by the end of 2028. The aim is to avoid regulatory uncertainty and provide a clear framework for grid charges. Regulators plan to finalize the rules by the end of 2026, giving network operators, suppliers, and other stakeholders about 2 years to update billing systems, contracts, and related processes.
A formal consultation on AgNes in its present form is planned for summer 2026, with final rules expected by the end of 2026. The new grid fee system is set to start in 2029, replacing existing rules that expire at the end of 2028. Additional rules will be developed in 2027, while dynamic grid tariffs could be introduced from 2030 for storage and from 2032 for generators. Existing power plants would generally be exempt from new generator charges for 20 years after commissioning.