Smart Meter Mandate in 2026: What You Need to Know Now as a Solar Panel Owner
The 2026 smart meter mandate makes the smart metering system a key economic issue for operators of photovoltaic systems over 7 kW: Anyone operating a new system under 100 kW without a smart metering system under the feed-in tariff may feed no more than 60% of its capacity into the grid until the system is installed—generation peaks above this limit cannot be fed into the grid. At the same time, the mandate paves the way for energy sharing starting in June 2026 and for dynamic rates.
The short answer
The 2026 smart meter requirement applies to PV systems with a capacity of more than 7 kW —both new and existing systems (Section 29(1)(2)(b) of the MsbG). New as of the Solar Peak Act (effective February 25, 2025): New systems under 100 kW that qualify for the feed-in tariff may feed in only 60% of their installed capacity until a smart metering system and control box are installed (Section 9(2) EEG 2023).
Installation is free; for systems up to 100 kW, the primary metering point operator may charge you a maximum of 100 to 190 € per year (including the tax box). The smart metering system also facilitates access to energy sharing starting June 1, 2026, and to dynamic rates.
Starting in 2026, the smart meter requirement will become a tangible economic issue for operators of photovoltaic systems larger than 7 kW. This article is aimed at PV system operators, investors, and companies with their own systems, and explains what the 2026 smart meter requirement specifically entails—from the legal framework to all deadlines and costs, right through to the new revenue models. Since February 25, 2025, the Solar Peak Act has fundamentally changed the rules for new PV systems: Unless a smart metering system with a control box is installed and tested, new systems under 100 kW may feed only 60% of their capacity into the grid under the feed-in tariff.
1. The Solar Peak Act: The Legal Basis for the Smart Meter Mandate
The law is officially titled “Act Amending Energy Industry Law to Prevent Temporary Surpluses in Electricity Generation.” The Bundestag passed it on January 31, 2025, and the Bundesrat approved it on February 14, 2025. Background: By the end of 2024, approximately 100 GW of PV capacity had been installed in Germany. On sunny afternoons, photovoltaic systems generate more electricity than the grid can absorb—with growing consequences for grid stability and feed-in tariff costs.
The political response to this: Decentralized generators must be made controllable. Instead of imposing a blanket cap on PV systems, an intelligent metering system with a control box should allow the grid operator to reduce feed-in in a targeted manner and in real time—only when necessary, and only to the extent necessary. Here’s what the law specifically stipulates for households, businesses, and investors:
- Solar Power Systems Over 7 kW: New Rollout Quotas for the Installation of Smart Metering Systems and Control Boxes by the Metering Point Operator (Section 45 of the MsbG)
- New PV systems under 100 kW covered by the feed-in tariff (excluding plug-in solar devices): Until a smart metering system and control box are installed, the feed-in is limited to 60% of the installed capacity.
- New PV systems of 2 kW or more: no EEG feed-in tariff if the electricity price on the exchange is negative—for systems under 100 kW, this applies only starting the year after the smart meter is installed (Section 51 EEG 2023)
- Existing installations prior to February 25, 2025: no 60% limit; in the event of negative prices, the previous regulation continues to apply (Section 100 of the EEG 2023); they are nevertheless covered by the smart meter rollout (Section 45 of the MsbG)
2. Who is required to install a smart meter? The 7-kW threshold in detail
Anyone operating a photovoltaic system above this threshold is subject to the metering point operator’s installation requirement (Section 29(1)(2)(b) of the MsbG); the system operator must allow for the installation (Section 9(1)(1) of the EEG 2023). The requirement under Section 29 of the MsbG applies to three consumer groups:
- Households and businesses with an annual consumption of more than 6,000 kWh (Section 29(1)(1) of the MsbG)—which corresponds roughly to a single-family home with a heat pump
- Operators of solar power systems with an installed capacity of more than 7 kW (Section 29(1)(2)(b) of the MsbG)
- Operators of controllable consumption devices such as heat pumps, wall boxes, or home storage systems with a capacity exceeding 4.2 kW, for which an agreement exists pursuant to Section 14a of the Energy Economy Act (EnWG) (Section 29(1)(2)(a) of the Measure Act (MsbG))
The requirement applies if even one of these criteria is met. This is particularly relevant for households: Anyone operating a heat pump and a PV system with a capacity of less than 7 kW is already subject to the requirement based on the heat pump alone. The old analog Ferraris meter or a simple digital electricity meter must then be replaced with a smart metering system.
| System size | Obligation? | Grid Connection Without iMSys | Annual Operating Costs (Capped) |
|---|---|---|---|
| Plug-in solar device (≤ 2 kW / 800 VA) | No – except | unlimited | – |
| ≤ 7 kWp (except for plug-in solar devices) | Not mandatory, but a 60% limit | max. 60% | up to 30 €/year (optional) |
| > 7 to ≤ 15 kWp | Tax + Tax Box | max. 60% | up to 100 € per year |
| > 15 to ≤ 25 kWp | Tax + Tax Box | max. 60% | up to 160 €/year |
| > 25 to ≤ 100 kWp | Tax + Tax Box | max. 60% | up to 190 € per year |
| > 100 kWp | Mandatory (rollout starting in 2028) | No 60% limit, but can be controlled remotely | Control Box + RLM Meter |
| Maximum amounts pursuant to Section 30 of the MsbG (including the tax box); in the case of installation at the tenant’s request, an additional fee of up to a one-time payment of €100 and, in cases of optional installation, up to €30 per year is considered reasonable (Section 35(1) of the MsbG). The 60% limit applies only to new systems with a feed-in tariff or tenant electricity surcharge of less than 100 kW, and only until the installation of iMSys and the control box (Section 9(2) EEG 2023). Source: MsbG, EEG 2023, as of September 2026. | |||
Important for landlords and property owners: Anyone who operates a building with a PV system exceeding 7 kW is directly affected. Any necessary meter cabinet upgrades are not the responsibility of the metering point operator. Responsibility lies with the connection holder—usually the building owner (§§ 13, 22 NAV)—and the system operator (§ 9(1) EEG); the internal allocation of costs is governed by the lease or rental agreement. The sooner the meter cabinet is inspected for retrofit compatibility, the more cost-effective it will be.
Voluntary Installation: Customers who are not part of the mandatory group may still have a smart meter installed. As of January 2025, the metering point operator must, in principle, carry out the installation within four months upon request (Section 34(2) of the MsbG). In return, the operator may charge an additional fee, which is considered reasonable up to a one-time amount of €100 and, in cases of optional installation, up to €30 per year (Section 35(1) of the MsbG); the metered point operator with primary responsibility may temporarily postpone the order as long as its rollout quotas are not jeopardized (Section 34(2) of the MsbG). The incentive: access to dynamic electricity rates and energy sharing starting in June 2026.
Is this an issue for you? If so, it should be part of the planning, not an afterthought.
Whether iMSys, the control box, and the meter cabinet are factored into the design from the very beginning determines whether a system will feed power into the grid at full capacity from day one or remain at 60 percent until installation is complete. Logic Energy plans, builds, and operates PV systems for businesses and investors—including the metering concept. The contractual partner for direct investments is mediplan Helm e.K., a partnership with personal liability.
3. What happens without a smart meter? An explanation of the 60% power reduction
A concrete example: A new 12-kWp system under the feed-in tariff without a gateway may feed in a maximum of 7.2 kW. On a summer day with 11 kW of production, up to 3.8 kW cannot be fed into the grid during the midday peak—but only during the hours when generation exceeds 7.2 kW. Over the course of a year, the loss is therefore significantly smaller than the peak output would suggest: A study by HTW Berlin (2016) found that for households with a photovoltaic storage system (5 kWp, 5 kWh storage, including self-consumption), even with a stricter 50% limit, the average curtailment loss was around 8%, and with forecast-based storage charging, around 2%. The greater the PV capacity relative to consumption, the higher the loss.
The limit also applies to new PV systems up to 7 kW under the feed-in tariff, for which the previous 70% rule has been eliminated. Even without a legal installation requirement, peak generation levels exceeding 60% of capacity cannot be fed into the grid without the new metering system. The limit is automatically lifted as soon as the smart meter is installed and the grid operator has successfully completed an end-to-end test of remote controllability.
4. When do the rules take effect? Deadlines and the status of the smart meter rollout as of 2026
The rollout is underway but is falling short of legal requirements; since March 2026, the Federal Network Agency has initiated regulatory proceedings against metering point operators who fail to meet their expansion obligations. Anyone connecting a new system under 100 kW to the grid under the feed-in tariff today must expect to start out with the 60% cap and switch to full feed-in only after installation is complete.
| Date | What Applies |
|---|---|
| February 25, 2025 | Solar Peak Act Takes Effect; 60% Cap on Feed-in Tariffs for New Systems Without iMSys, New Rollout Quotas |
| December 31, 2025 | 20% quota for mandatory installation cases involving end users (6,000 to 100,000 kWh, Section 14a cases), not for PV systems (Section 45(1), sentence 1, no. 4a of the MsbG) |
| December 31, 2026 | At least 90% of the new capacity commissioned between February 25, 2025, and September 30, 2026 (systems ranging from 7 to 100 kW) must be equipped |
| December 31, 2028 | At least 90% of the capacity newly commissioned between October 1, 2026, and September 30, 2028, and 50% of the capacity of existing plants (commissioned between January 1, 2018, and February 25, 2025) must be equipped; the operator is not required to retrofit the system on its own. |
| December 31, 2030 | At least 90% of the capacity newly commissioned between October 1, 2028, and September 30, 2030, must be equipped |
| December 31, 2032 | At least 90% of the total installed capacity or of cases requiring mandatory installation must use iMSys; all other meters must be at least modern metering devices (Section 29(3) of the Metering Act (MsbG)) |
| Rollout rates pursuant to Section 45(1) of the MsbG—obligations of the metering point operator, not the plant operator. Status of equipment installation: Federal Network Agency, survey as of June 30, 2026 (updated September 21, 2026), accessed September 24, 2026. | |
For operators of existing systems over 7 kW: no action required—the metering point operator will contact you on its own initiative. It is legally required to provide notice no later than three months before the planned installation (Section 37(2) of the Metering Point Operators Act (MsbG)). If another metering point operator is commissioned instead, they may carry out the installation within four months of receiving notification of the conversion (Section 36(1) MsbG)—so anyone wishing to compare providers should do so immediately after the announcement.
5. Smart metering system, smart meter gateway, and control box: What’s behind them?
A smart metering system is more than just a digital electricity meter: it is the communication infrastructure that connects the PV system, the grid operator, the direct marketer, and the supplier in real time. Here are the three components in detail:
- Modern metering equipment (mME) —the digital electricity meter. It replaces the analog Ferraris meter and records both feed-in and consumption, including usage times; it can only transmit the data once it is connected via a smart meter gateway (Section 2, No. 15 of the MsbG). Those who monitor their consumption via a smart metering system at 15-minute intervals can identify energy-hungry appliances—such as washing machines, heat pumps, and wall boxes—much more easily.
- Smart Meter Gateway (SMGW) – the BSI-certified communication unit. It connects to the meter using encrypted communication via three interfaces: LMN (meter connection), WAN (communication with the metering point operator, grid operator, and direct supplier), and HAN (local control, dynamic rates).
- Control box (control device) – enables the grid operator to remotely control power feed-in in real time. Only when the control box is activated is full power enabled and the 60% limit lifted.
For systems rated at 100 kW or more, the system must be equipped so that the grid operator can retrieve the actual feed-in data and remotely control the output (Section 9(2) of the EEG); in the case of direct marketing, this applies to systems rated at more than 25 kW in relation to the direct marketer (Section 10b of the EEG). For medium-voltage connections with more than 500 kW of installed capacity or more than 270 kW of feed-in capacity, a system certificate is required; the system must then be fully connected and certified in accordance with VDE-AR-N 4110 (Section 2 (2a) and (4) NELEV; VDE FNN, Note NELEV/EAAV, 03/2024). The key advantage: Smart metering systems form the basis for dynamic rates and facilitate energy sharing. In direct marketing, remote control must be routed through the smart meter gateway starting January 1, 2028, as soon as a smart metering system is installed (Section 10b(2) EEG 2023).
6. Negative electricity prices, declining feed-in tariffs, and the impact of smart meters
Current Feed-in Tariff (effective August 1, 2026)
As of August 1, 2026, the feed-in tariff rates have decreased by approximately 1% due to the semi-annual phase-out. According to the Federal Network Agency, the following feed-in tariff rates apply to systems commissioned between August 1, 2026, and December 31, 2026:
- up to 10 kWp, partial feed-in: 7.70 ct/kWh
- Up to 10 kWp, full feed-in: 12.22 ct/kWh
- 10–40 kWp, partial feed-in: 6.66 ct/kWh
- 40–100 kWp, partial feed-in: 5.44 ct/kWh
It remains to be seen whether there will be a further reduction: The EEG 2023 is in effect through December 31, 2026, and the successor legislation is currently under parliamentary review. The declining feed-in tariffs are shifting the focus: Self-consumption—especially for households with heat pumps or wallboxes that consume more than 6,000 kWh annually—is becoming increasingly attractive compared to feeding electricity into the grid alone. Our article on the 2026 EEG feed-in tariffs and the CfD reform analyzes what this means in the long term.
Negative electricity prices: A growing phenomenon in the electricity market
- 2023: 301 hours with a negative electricity price on the exchange
- 2024: 457 hours (+52% compared to 2023)
- 2025: 573 hours – a new record (+25% compared to 2024)
Source: Federal Network Agency/SMARD, Annual Electricity Market Reports for 2023 and 2025 (day-ahead, hourly basis).
The more photovoltaic systems, heat pumps, and storage units are connected to the grid, the more frequently solar midday peaks occur, during which the price drops below zero. For new systems installed on or after February 25, 2025, the following generally applies during these hours: no EEG feed-in tariff. To compensate, the payment period is extended—though not on a 1:1 basis: For solar systems, half of the affected quarter-hours are counted, converted into a quota of full-load quarter-hours, which is consumed on a monthly basis after the regular end of the period (Section 51a EEG 2023). Our article on negative electricity prices and PV investors explains why this isn’t a problem for well-prepared investors.
Important limitation: For systems under 100 kW, feed-in remuneration is not suspended during periods of negative prices until the end of the calendar year in which the system is equipped with a smart metering system (Section 51(2)(1) EEG 2023). Systems of 100 kW or more receive no payment for periods with negative prices from the very beginning. Operators of electricity storage systems can stop feeding power into the grid during hours with negative prices and charge their batteries instead—read more about this in the article on PV systems with battery storage and co-location.
7. Energy Sharing: Measurement accurate to the quarter-hour as a prerequisite
A Ferraris meter cannot provide these values, and a digital meter without a smart meter gateway does not transmit them. The operator may delegate metering and billing to a service provider. However, only those who do not operate the system primarily for commercial purposes may be operators of an energy-sharing system (Section 42c(1)(5) of the Energy Industry Act (EnWG))—therefore, this model is not a source of revenue for commercial PV investors. Our article on how energy sharing works explains who is eligible to participate in energy sharing and what the economic benefits are.
8. Smart Meter Installation: Costs, Providers, and What Landlords Need to Know
| Performance | Metering System (Connection Users) | Control Box (Connector) | Total per year |
|---|---|---|---|
| > 7 to ≤ 15 kW | up to 50 € | up to 50 € | up to 100 € |
| > 15 to ≤ 25 kW | up to 110 € | up to 50 € | up to 160 € |
| > 25 to ≤ 100 kW | up to 140 € | up to 50 € | up to 190 € |
| Shares pursuant to Section 30(1)(4)(b), (3)(b), and (2)(b), as well as (2) of the Metering Point Operations Act (MsbG). The statutory price caps per metering point are higher (€130 / €190 / €220), of which the grid operator covers up to €80 in each case; for the tax box, the operator pays an additional amount of up to €50. Over 20 years (nominal, based on current maximum amounts): €2,000 to €3,800. Source: Metering Point Operation Act (MsbG), as of September 2026. | |||
Over 20 years, these costs amount to between €2,000 and €3,800 (in nominal terms) based on current maximum amounts—an expense that arises in any case due to the mandatory installation and must be included in any cost-benefit analysis. There is no cap on the costs of modernizing a meter cabinet if it does not comply with current standards: typically €500 to €2,000, and in some cases up to €5,000. The person responsible is generally the service connection holder, usually the building owner (Section 22 NAV); the rental or lease agreement specifies who bears the costs internally.
Change of Metering Point Operator: Notice of installation must be provided no later than three months before installation (Section 37(2) of the Metering Point Act (MsbG)). Another designated metering point operator may install the equipment within four months of receiving notification of the conversion (Section 36(1) of the Metering Point Act (MsbG)). The smart meter box fee of up to €50 per year is billed to the connection holder, which is typically the property owner (Section 30(2) of the MsbG). Landlords with PV systems exceeding 7 kW should have their meter cabinets inspected in a timely manner to ensure they can be retrofitted; they cannot prevent the installation of smart meters (Section 36 of the MsbG).
Economic Benefit Under Section 14a of the Energy Industry Act (EnWG): Anyone who operates metered consumption devices such as heat pumps or wallboxes receives a reduction in grid fees—under the flat-rate option (Module 1), according to the Federal Network Agency, between €110 and €190 per year (as of 2023), depending on the grid region—as compensation for the fact that the grid operator is permitted to temporarily reduce the power of these devices in the event of grid overload. This requires a controllable consumption device with a capacity of over 4.2 kW—the PV system itself is not included—and can offset some or all of the metering costs.
Planning for Smart Meter Readiness—Right from the Start
Logic Energy designs, builds, and operates turnkey PV systems in which iMSys, the control box, and the meter cabinet are included in the planning from the very beginning—not as retrofits, but as standard features. The contractual partner for direct investments is mediplan Helm e.K., a partnership with personal liability of the owners.
9. What the smart meter mandate means in practice for PV investors
Anyone who does not plan for smart metering systems from the outset risks having their feed-in tariff capped for systems under 100 kW until the system is installed. Three specific consequences:
- Ensure full grid injection from the start. A new system under 100 kW covered by the feed-in tariff can only feed into the grid up to 60% of its capacity without a smart metering system and control box; generation peaks above this limit cannot be fed into the grid until these systems are installed. The 60% limit does not apply to systems of 100 kW or more—however, they must be remotely controllable from the start and must make their actual feed-in data available (Section 9(2), Sentence 1, No. 1 of the EEG 2023).
- Plan for infrastructure from the very beginning. A compatible meter cabinet should be included in every project plan; operating costs of €100 to €190 per year should be factored into every cost-benefit analysis. A reputable project planner includes the metering system, control box, and meter cabinet in the plan as standard.
- Direct sales as a source of additional revenue. For systems exceeding 25 kW, this requires on-demand and remote control technology (Section 10b of the EEG 2023), which must be routed through the smart meter gateway as of January 1, 2028, once a smart metering system has been installed; by contrast, energy sharing under Section 42c of the EnWG is not available to commercial system operators.
Outlook: 2027 EEG Reform
The government draft of the EEG 2027, adopted by the Federal Cabinet on July 29, 2026, provides for the elimination of the fixed feed-in tariff for new installations. Only plants with a capacity of 100 kW or more are to bear the two-part mechanism (refinancing contribution, Section 21d EEG-E); for smaller plants, the draft provides, among other things, for a temporary transitional payment and a permanent feed-in cap of 50%. The law has not yet entered into force. Anyone who wants to secure the proven subsidy system for 20 years has good reason to consider commissioning a plant in 2026—read more about this in our article on the 2026 feed-in tariff and the EEG 2027.
Frequently Asked Questions About the 2026 Smart Meter Mandate
As a solar panel owner, do I have to have the smart meter installed myself?
No. The installation is carried out by the responsible metering point operator, not the system operator. The metering point operator will contact you on its own initiative and give at least three months’ notice of the installation (Section 37(2) of the MsbG). Use this notice to compare providers: Another metering point operator may take over the installation within four months of receiving notice of the conversion (Section 36(1) of the MsbG).
Does the 60% reduction also apply to my existing system?
No. The 60% limit does not apply to systems that were commissioned before February 25, 2025 (Section 100 of the EEG 2023). The 60% feed-in limit under Section 9(2) of the EEG 2023 applies only to new installations under 100 kW in the feed-in tariff or tenant electricity surcharge, as long as a smart metering system with a control box has not been installed and tested. Existing systems over 7 kW are also subject to the rollout; the metering point operator determines when they will receive a smart metering system within the quotas specified in Section 45 of the Metering Point Act (MsbG)—there is no separate retrofitting deadline for operators.
As a solar panel owner, how much does a smart meter cost me per year?
Installation is free of charge; the only costs incurred are capped operating costs in accordance with Section 30 of the MsbG: a maximum of €100 per year for systems between 7 and 15 kW, a maximum of €160 per year for systems between 15 and 25 kW, and a maximum of €190 per year for systems between 25 and 100 kW (each amount includes €50 for the meter box, which is billed to the customer). Any meter cabinet modernization (typically €500 to €2,000) is not subject to a cap.
What is the difference between a smart meter, a smart metering system, and a control box?
The modern metering system (mME) is a purely digital meter. When combined with a BSI-certified smart meter gateway, it forms an intelligent metering system (iMSys)—commonly referred to as a smart meter. The control box is an additional component that allows the grid operator to remotely control power feed-in; only with this component is the 60% limit eliminated.
When does an existing system over 7 kW need to be retrofitted?
There is no specific retrofit deadline for operators. The obligation rests with the metering point operator: By December 31, 2028, they must equip at least 50% of the capacity that came online between January 1, 2018, and February 25, 2025, and by the end of 2032, at least 90% of the total installed capacity (Section 45(1), sentence 1, nos. 2(b) and (d) of the MsbG). You must allow for the installation (Section 9(1)(1) of the EEG 2023)—the metering point operator schedules it and provides at least three months’ advance notice.
Can I participate in Energy Sharing without a smart meter?
Generally not. Energy sharing under Section 42c of the Energy Industry Act (EnWG) (effective June 1, 2026) requires that generation and consumption be recorded with quarter-hour accuracy: either through meter reading tracking—in practice, via a smart metering system—or through a recording power measurement (Section 42c(1)(6) and (7) EnWG). A simple digital electricity meter without a smart meter gateway is not sufficient.
Does the smart meter requirement also apply to a 9-kWp system with a full-capacity storage unit?
Yes. The requirement is based on the installed rated capacity, not on the amount of electricity fed into the grid. A 9-kWp system exceeds the 7-kW threshold and is therefore subject to the smart meter requirement—regardless of whether an energy storage system is present or how much electricity is fed into the grid. The only exception is that the control box is not required if you permanently limit the feed-in to 0% and declare this to the metering point operator in writing (Section 29(5) of the Metering Point Operator Act (MsbG)).
Can I have a smart meter installed voluntarily, even if I’m not part of the group required to do so?
Yes. Starting in January 2025, the metering point operator must, as a general rule, complete any installation requested on a voluntary basis within four months. For this, the operator may charge an additional fee, which is considered reasonable up to a one-time amount of 100 € and, in cases of optional installation, up to 30 € per year (Section 35(1) of the MsbG). The primary metering point operator may temporarily postpone the order as long as its rollout quotas are not jeopardized (Section 34(2) of the MsbG). The benefit: access to dynamic electricity rates and an easy path to energy sharing starting in June 2026.
Conclusion
The 2026 smart meter mandate may sound like red tape—but in reality, it is the technical key to the next generation of PV yields. Anyone planning a system designed to feed power into the grid at full capacity from the start and take advantage of dynamic rates needs a smart metering system not in spite of the mandate, but because of the opportunities it unlocks; For direct marketing of systems over 25 kW, the smart meter gateway will become the required control path starting in 2028, as soon as a smart metering system is installed. Our guide to EEG feed-in tariffs in 2026 and the overview of photovoltaic investments in 2026 show how this fits into the current subsidy landscape.
Sources and Legal Basis
- Federal Network Agency – EEG Subsidies and Subsidy Rates (Feed-in Tariff, August 1, 2026–December 31, 2026), accessed September 15, 2026
- Metering Point Operations Act (MsbG) – Sections 2, 29, 30, 34–37, 45 (Definitions, Installation Requirement, Price Caps, Additional Services, Selection of the Metering Point Operator, Notice Period, Rollout Quotas)
- Section 42c of the Energy Industry Act (EnWG) – Shared Use of Electrical Energy (Energy Sharing)
- Section 14a of the Energy Industry Act (EnWG) – Controllable Consumption Devices (Grid Fee Reduction)
- Section 9 of the EEG 2023 – Technical Specifications / 60% Feed-in Limit
- pv magazine Germany – “Solar Peak Act Published in the Federal Law Gazette,” February 24, 2025
- Federal Network Agency – Smart Metering Systems: Rollout Rates (as of June 30, 2026, updated September 21, 2026), accessed September 24, 2026
- HTW Berlin – “Effects of the 50% Feed-in Limit in the KfW Subsidy Program for Photovoltaic Storage Systems,” March 2016
- Finanztip – Feed-in Tariff 2026: Amount, Trends, and Planned Reforms, as of August 2026
Logic Energy Editorial Team. As of September 2026.
