Photograph via snooOG

A reddit focused on the storage of energy for later use. This includes things like batteries, capacitors, super-capacitors, flywheels, air compression, oil compression, mechanical compression, fuel tanks, pumped hydro, thermal storage, electrical storage, chemical storage, thermal storage, etc., but also broadens out to utilizing 'more-traditional' energy mediums... where their focus is on their energy storage potential for later use, including even using 'the grid' for storage.

The Energy Storage Reddit

Energy storage is accomplished by devices or physical media that store energy to perform useful operation at a later time. A device that stores energy is sometimes called an accumulator.

All forms of energy are either potential energy (e.g. Chemical, gravitational, electrical energy, etc.) or kinetic energy (e.g. thermal energy). A wind-up clock stores potential energy (in this case mechanical, in the spring tension), a battery stores readily convertible chemical energy to operate a mobile phone, and a hydroelectric dam stores energy in a reservoir as gravitational potential energy. Ice storage tanks store ice (thermal energy) at night to meet peak demand for cooling. Fossil fuels such as coal and gasoline store ancient energy derived from sunlight by organisms that later died, became buried and over time were then converted into these fuels. Even food (which is made by the same process as fossil fuels) is a form of energy stored in chemical form.

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Research help on LDES

I’m new to long duration energy storage, taking a shot in the dark here for a project.

Looking for any recommendations for websites to look into / sources to reach out to / any other recommended message board to get ideas on the below.   Need to find the below information for 1. hydrogen, 2. compressed air and 3. flow & 4. metal anode batteries:

  • recommended companies to look into which are furthest along for the above technologies for LDES use

  • Website(s) which tracks project announcement news / new partnerships / JVs

  • The value chain from raw materials to completion of the LDES tech and key players in each stage

  • Areas of highest value in the value chain (by profit and/or revenue pool)

23:54 UTC


New technologies applicable for Pumped Hydro Energy Storage methods

Hello! I'm here on behalf of my group for a class project. Our task for this project is to share/present any sort of new technology related to any type of (Renewable) Energy Storage method of our choice. We have so far chosen the Pumped Hydro Storage method; particularly on how they may be used for offshore wind farm applications.

Likewise, are there any sort of interesting technologies and/or information related to this application in particular that are relatively new? All suggestions and comments will be warmly accepted! :) We will choose one that interests us the most, do some research on it, and present our findings to our class. Thank you very much in advance!

10:37 UTC



18:04 UTC


Energy Saving at Sea - Free Online Course

Energy Saving at Sea - Free Online Course

This free course will focus on detailing practical measures that can be taken by the Engine department and Deck department on board ships to save energy in their day-to-day operations.



14:22 UTC


2-4 weeks of power possible?

I am not in the energy industry but I do sometimes deal with areas that lack power. As I don't really follow the industry I am not sure where things are. Are we at a point you could have a containerized system of batteries capable of storing at least enough power for a say 1200 sqft home for 1 week? 2,3,4? If not, could adding solar to slow charge help much? Other thought would be to include set up a schedule to mobile recharge once a week or I guess you could internalize a generate which would power own below a certain level but trying to minimize costs.

The concept would be to drop off the container charged to temp power until normal power is returned. I know not a cheap idea.

23:25 UTC


The Export Data of Solar and Energy Storage Inverters are Available, Indicating the More Intensified Inverter Market

The General Administration of Customs of China (GACC) recently released the import and export data for inverters in September 2023. In September 2023, the domestic exports of energy storage inverters amounted to $650 million, marking a 33% year-on-year decrease and a 6% month-on-month decline. The number of PV and energy storage inverters exported in September stood at 3.91 million units, down by 23% compared to the previous year and 3% on a month-to-month basis.

Despite various unstable factors, the September export data remains positive. In the short term, energy storage installations continue to be affected by the consumption of European PV inventory. However, in the medium and long term, the demand for installations is showing an upward trend.

Inverter Export Data: Amount, Volume, and Average Price
According to GACC data, the export figures for solar and energy storage inverters in September 2023 are as follows:

- Domestic exports of PV and energy storage inverters in September 2023 amounted to $650 million, marking a 33% year-on-year decrease and a 6% month-on-month decline.
- In September, the export of solar and energy storage inverters reached 3.91 million units, reflecting a 23% year-on-year decrease and a 3% month-on-month drop.
- The average export price of solar and energy storage inverters was $165.4, marking a 13% year-on-year decrease and a 4% month-on-month decline.
For the period from January to September 2023, the cumulative export figures for solar and energy storage inverters are as follows:
- The cumulative export amount of domestic solar and energy storage inverters reached $8.25 billion, marking a 39% year-on-year increase.

- During the same period, the cumulative export volume of domestic solar and energy storage inverters was 40.92 million units, reflecting a 24% year-on-year increase.
- From January to September, the average export price for optical storage inverters was $201.7, representing a 19% year-on-year increase.

Export Area: The export amount of solar and energy storage inverters to European area accounted for 48% of the total export value in September.
Based on data from the General Administration of Customs of China (GACC), let’s examine the export figures by region for September 2023:
- Exports of solar and energy storage inverters to Europe in September amounted to $311 million. This marked a 44% decrease compared to the previous year and a 19% drop on a month-to-month basis, contributing 48% to the total export value.
- Export amount of solar and energy storage inverters to South Africa in September reached $180 million. This showed a 54% year-on-year decrease but a notable 11% increase on a month-to-month basis, accounting for 3% of the total export value.
- Exports of solar and energy storage inverters to Brazil in September amounted to $270 million. Despite a substantial 72% year-on-year decrease and a 33% month-on-month drop, they still accounted for 4% of the total export value.
- Export amount of solar and energy storage inverters to the United States worth $260 million in September, with a 48% year-on-year decline and a slight 1% month-on-month decrease. This constituted 4% of the total export value.
- Australia, India, and Japan collectively represented 4%, 3%, and 2% of the total export value, respectively, for solar and energy storage inverters in September.

Export Amount of Domestic Inverters from Different Areas in September 2023


According to data from the General Administration of Customs of China (GACC), the total export amount to Europe for the period from January to September 2023 stood at $4.966 billion, representing a substantial 60% of the overall exports. During the same period, South Africa, Brazil, the USA, and Australia contributed 6%, 5%, 3%, and 2%, respectively, to the total export value.

Export Amount of Domestic Inverters from Different Areas from January to September 2023


Market Overview: Increased Competition in the Inverter Industry

European Market: In recent months, the European inverter market has faced a concerning issue—rising inventory levels. The growth rate of import volumes in Europe slowed down during the third quarter, mainly due to the high inventory of solar and energy storage inverters and lower-than-expected installation rates, which temporarily impacted shipments from domestic inverter companies to Europe.

However, in September, there was a positive shift in the growth rate of European export volumes compared to the negative trend in August. This change suggests that the inventory levels returned to normal after three months of destocking, resulting in improved overseas shipments. With the growing demand in Europe, it is anticipated that the growth rate of European regional export volumes will gradually recover.

Americas Market:
September witnessed steady growth in the demand for inverter products in the Americas market. In the realm of energy storage, inverter companies are making a significant impact. Notably, many global inverter enterprises, in addition to their presence in Europe, are expanding their operations into the U.S. market. Domestic inverter companies are also quickening their efforts to establish a foothold in the U.S. market. However, it’s worth noting that obtaining product verification in the U.S. market is a more challenging process, typically taking at least six months to meet U.S. standards—a rather slow progression. Currently, several active manufacturers have achieved verification in the American inverter market, including Megarevo, SRNE, Oxford, and more. Leading enterprises such as Siemens and Hemai have also begun to enter this market.
Mexico and Brazil are emerging as hotspots in the Americas’ photovoltaic sector this year. Fueled by renewable energy goals and increasing energy demand, these countries hold significant potential for the development of the photovoltaic market, with their energy storage businesses expected to follow suit.

African Market:
African countries are gradually accelerating their industrial deployment of solar due to energy and power challenges. As a result, there is a growing market demand for solar inverters and energy storage inverters. Chinese enterprises are advised to closely monitor the emerging PV markets in the African region.


09:17 UTC


Twenty Questions You Need to Know About User-Side Energy Storage

In the past year, as energy storage technologies have become more established and costs have decreased, coupled with the implementation of electricity incentive policies, there has been a significant uptick in middle and small-scale user-side energy storage projects. Furthermore, the demand for user-side energy storage projects in the market has surged. Despite the growing number of user-side energy storage projects in operation, many people still lack a clear understanding of this technology.

In essence, user-side energy storage refers to electrochemical energy storage systems used by industrial and commercial customers. These systems can be likened to large-scale power banks that charge when electricity prices are low and discharge when prices are high, thereby reducing overall electricity costs. When considering the entire electricity system, energy storage applications can be categorized into three main areas: generation, distribution, and the user side. From the grid’s perspective, these can be further divided into energy demand and power output requirements.

Twenty Questions About User-Side Energy Storage:

1.What Is User-Side Energy Storage?

User-side energy storage, in simple terms, refers to the application of electrochemical energy storage systems by industrial and commercial customers. Think of these systems as substantial power banks that charge when electricity prices are low and discharge to supply power to companies when prices are high. This strategic approach helps in reducing electricity costs.

2.What are the advantages of installing an energy storage system?

I. Peak Shaving: Energy storage systems play a pivotal role in peak shaving, effectively easing the load during peak hours. They also contribute to creating a smoother load curve, which further reduces electricity costs.

II. Balancing Demand Electricity Bills: By facilitating peak shaving and achieving a more stable load curve, energy storage systems can help reduce demand electricity bills.

III. Flexible Capacity Increase: Typically, the capacity of a user’s transformer is fixed. However, installing a suitable energy storage system allows for load reduction through recharging, eliminating the need to expand the transformer’s capacity. This, in turn, lowers the cost associated with transformer capacity expansion.

IV. Demand Response: With an energy storage system in place, customers can participate in demand response programs within the grid. This offers them an opportunity to receive extra compensation without being constrained by electricity restrictions or facing high electricity bills during peak hours.

3.What Are the Key Applications for User-Side Energy Storage?

User-side energy storage finds its primary application in charging stations, industrial parks, data centers, communication base stations, and other locations with well-balanced electricity consumption.

4.What Is the Profit Model for Investment, Construction, and Operation of User-Side Energy Storage?

I. The integrated operator takes on the responsibility of investing, building, and operating the system. Customers do not have to contribute financially; their role is to provide a suitable site for the energy storage system's construction. The revenue generated is shared between the integrated operator and the customer.

II. Both parties, meaning the customer and the integrated operator, share the revenue. The specific distribution of revenue depends on the customer's electricity consumption and the scale of the energy storage system.

III. The customer invests in the construction of the energy storage system, while the integrated operator handles the operation and assures the customer of revenue.

  1. What Is the Typical Duration for User-Side Energy Storage Projects?

The usual cooperative period for user-side energy storage projects is approximately 15 years.

  1. How Long Does It Take from Contract Signing to Project Launch?

The timeframe from signing the contract to the project’s formal operation generally spans 3 to 6 months. The specific duration depends on the site’s conditions and complexity.

  1. What Electricity Standards Must Enterprises Meet for Energy Storage Power Plant Installation?

Currently, national and local governments do not impose specific conditions for the construction of user-side energy storage systems. For instance, in Guangdong province, the minimum required electricity consumption is set at 5 million kilowatt-hours per year, while in the Zhejiang area, it's no less than 3 million kilowatt-hours per year. Higher electricity consumption allows for a larger configurable energy storage capacity within the project.

  1. What Is the Required Space for an Energy Storage Power Station?

A 1MWh energy storage power station typically occupies an area of about 10 square meters, taking into account front and rear safety distances of 20-30 square meters.

  1. What Are the Site Requirements for Installing an Energy Storage Plant?

The installation site must be outdoors, with no hazardous chemical storage within a 20-meter radius. Ideally, the site should be located in close proximity to the power distribution room, with a distance not exceeding 100 meters.

  1. Does Installing an Energy Storage Power Station Require the Owner’s Involvement in Formalities?

The installation of an energy storage power station involves filing on the local development and reform bureau website, a responsibility handled by the integrated operator. The owner's role is to provide necessary cooperation by supplying required information.

  1. What Is the Construction Timeline for the Energy Storage Plant? Is Power Disconnection Necessary, and If So, How Long Does It Take?

Once the formalities are complete, the construction typically takes about 1 to 1.5 months. A brief power interruption is necessary during the installation of the grid-connected cabinet, with the shortest outage lasting approximately 2 hours.

  1. Who Will Handle the Operation and Maintenance of the Energy Storage Plant? Does the Owner’s Staff Need to Be Involved in Future Operations?

For customers who opt for an integrated operator, the operator takes on the responsibility of operating and maintaining the storage plant after its completion. Additionally, the integrated operator typically provides training to the owner’s staff and offers solutions for handling special circumstances.

  1. Will the Energy Storage Plant Impact the Owner’s Base Electricity Costs?

No, it won’t. If the billing is based on capacity, the basic electricity cost remains constant. If billing is determined by demand, the load carried by the energy storage discharge may reduce the maximum demand, potentially lowering the basic tariff.

The energy storage capacity’s design accounts for the transformer’s capacity and its load. Consequently, the capacity demand won’t increase while the energy storage system is charging. If a demand increase is required, the Energy Management System (EMS) will automatically recognize this and stop charging.

  1. Does the Energy Storage Plant Incur Losses? If So, Who Is Responsible for Them?

Yes, there are losses, and these have been factored in and subtracted when sharing revenue between the two parties.

  1. Is the Energy Storage Plant’s Metering Precise?

Absolutely, all electricity meters installed adhere to national standards and have successfully passed the required tests.

  1. Who Is Responsible for Safety Issues in the Energy Storage Plant?

If equipment malfunctions in Party A are a result of Party B’s equipment, Party B is responsible for compensating Party A for its losses. Additionally, Party B is tasked with securing machine damage and property insurance related to the project during contract performance, including bearing the insurance premiums. The insured amount for property insurance should not be less than the actual value of the insured property.

  1. Is It Necessary to Interrupt Power Supply During Daily Operation of the Energy Storage Power Station?

No, there is no need for power interruption during the daily operation of the power station.

  1. Will the Switching of the Energy Storage Plant Cause Power Fluctuations?

No, the energy storage device will not have a negative impact on the quality of power for the user.

  1. Is Emergency Power Access for the Energy Storage Plant Instantaneous, or Does It Require Manual Adjustment?

The switching strategy for the energy storage station must be established in advance. Unlike UPS systems, energy storage equipment cannot achieve fully automatic switching.

  1. Will the Energy Storage Equipment Be Replaced When It Wears Out, and Who Will Cover the Costs?

The primary component subject to wear and tear in energy storage equipment is the battery, as its performance naturally declines over time. When the battery’s performance drops to a certain level, the integrated operator will be responsible for replacement, and the associated costs will not be passed on to the enterprise.


09:11 UTC


List of operation, repair and maintenance companies in battery industry?

Please comment here if you know any company that is currently in the business of testing and repairing industrial, light means of transport batteries (e-bikes, e-scooters), electrical vehicle batteries, or energy storage system batteries. I would like to make a list of all the involved in the market, especially in Europe.

13:04 UTC


Power and Process Monitoring Systems in Industry

A Power and Process Monitoring System is a sophisticated solution designed to monitor, control, and optimize the operations of various industrial processes and the consumption of electrical power within a facility. These systems play a crucial role in enhancing efficiency, reducing operational costs, ensuring safety, and minimizing downtime in industrial settings. Here, we will delve into the key components, features, and benefits of a Power and Process Monitoring System.

Key Components of a Power and Process Monitoring System:

  1. Sensors and Instruments: These are the essential hardware components that collect data related to various parameters, such as temperature, pressure, flow rate, voltage, current, and more. These sensors are strategically placed throughout the facility to capture real-time data.
  2. Data Acquisition System: The data collected by sensors are transmitted to a data acquisition system, which then processes and stores the information. This system ensures that data is accurate and reliable, making it a critical component of the monitoring system.
  3. Control Software: This software is responsible for analyzing and interpreting the data collected. It can set alarms, control various processes, and provide real-time visualization of the data, allowing operators to make informed decisions.
  4. Human-Machine Interface (HMI): The HMI is the user-friendly interface that allows operators and engineers to interact with the system. It provides a graphical representation of the data, making it easy to understand and control the processes.
  5. Communication Network: In modern systems, data is often transmitted over a network, allowing for remote monitoring and control. This network can be wired or wireless, depending on the specific requirements of the facility.

Key Features of a Power and Process Monitoring System:

  1. Real-Time Monitoring: These systems offer real-time data on the performance of industrial processes and power consumption, allowing operators to identify and address issues promptly.
  2. Data Analysis: The system can analyze historical data to identify trends, patterns, and anomalies, which can lead to improved process efficiency and energy conservation.
  3. Alarm and Notification: When a parameter falls outside of predefined limits, the system can issue alarms and notifications to operators, reducing the risk of operational failures.
  4. Remote Access: Many modern systems allow authorized personnel to access and control the system remotely, providing flexibility and reducing the need for physical presence on-site.
  5. Energy Management: The system can help manage and optimize power consumption, which is crucial for cost savings and reducing the environmental footprint of the facility.

Benefits of a Power and Process Monitoring System:

  1. Increased Efficiency: By providing real-time data and analysis, these systems help operators make quick and informed decisions, leading to increased operational efficiency.
  2. Cost Reduction: Monitoring power consumption and industrial processes allows for the identification of energy-saving opportunities and operational optimizations, leading to cost reductions.
  3. Improved Safety: The ability to monitor and control processes in real time enhances safety by preventing and responding to potential hazards.
  4. Reduced Downtime: With early warning systems and remote access, downtime due to equipment failures can be minimized.
  5. Environmental Sustainability: Efficient energy management reduces the environmental impact of a facility by lowering energy consumption and waste.

In conclusion, a Power and Process Monitoring System is an invaluable tool in industrial settings. It enables precise control of processes, cost reductions, improved safety, and a reduced environmental footprint. As technology advances, these systems continue to play a pivotal role in enhancing the productivity and sustainability of various industries.

Source: https://www.icdipl.net/power-and-process-monitoring-system/

08:37 UTC


Get Ready for the Energy Trend Seminar 2024!


With the ambitious aim of achieving carbon neutrality, the global clean energy industry has embarked on a new phase of development. This entails the creation of new energy solutions that are characterized by large-scale production, increased market penetration, and enhanced quality. This shift underscores the inexorable growth of the new energy sector, with the photovoltaic and energy storage industry experiencing a remarkable boom. As we anticipate 2024, what can we expect from the global photovoltaic industry chain? Which direction is the global energy storage market demand taking? How will advanced photovoltaic energy storage technology evolve? A fresh wave of technological and industrial transformation is on the horizon, and the question remains: who will be able to hop aboard this high-speed train?

To foster industry collaboration and facilitate information exchange, TrendForce is delighted to announce the Energy Trend Seminar 2024, scheduled for November 30, 2023, under the theme Empowerment, Integration, and Innovation. During this event, our team of analysts and esteemed industry experts will delve into discussions about the forthcoming market trends, technological advancements, and iterative progress in the PV and energy storage sectors for 2024. Anticipate technology-driven transformations that will make a substantial impact on the global PV and energy storage landscape. We wholeheartedly invite your participation in this seminar, where we can collectively look ahead to another remarkable ascent in the PV and energy storage industry.

The registration channel for the Energy Trend Seminar 2024 is now open( Click here). We extend a warm welcome to our seminar! Please be aware that the seminar agenda is subject to change, so stay tuned for the latest updates provided by TrendForce and EnergyTrend.

Official website:https://seminar.trendforce.cn/PV-EnergyStorage/SZ2023/US/index/


09:37 UTC


Can You Store or Transport Energy with Bitcoin?

19:37 UTC


Enhancing Industrial Power Management with Key Components

Industrial operations often demand precise control, reliability, and efficiency when it comes to managing power. In this blog, we explore three essential components that contribute to optimizing power in industrial settings: Industrial Battery Chargers, Thyristor Power Regulators, and Thyristor Capacitor Switching Modules.

Industrial Battery Chargers: Industrial battery chargers are the workhorses behind keeping industrial batteries in peak condition. These batteries power various applications, such as forklifts, backup power systems, and electric vehicles. Industrial battery chargers are designed for high-power applications, ensuring that these heavy-duty batteries are recharged efficiently.

Key features of industrial battery chargers include adjustable charging voltage and current, temperature monitoring, and robust safety mechanisms. This combination ensures the longevity of the battery while safeguarding the industrial processes that rely on them.

Thyristor Power Regulators: Thyristor Power Regulators, often referred to as SCR (Silicon Controlled Rectifier) power regulators, offer a robust solution for controlling power to electrical loads. These devices use thyristors to precisely manage power by adjusting the phase angle of the AC voltage waveform. This level of control is crucial in applications where precision matters, such as industrial processes that involve electric heating elements.

SCR power regulators deliver not only accuracy but also high efficiency and reliability. They excel at managing power distribution, ensuring that electrical systems operate optimally and that energy is utilized efficiently.

Thyristor Capacitor Switching Modules: Power factor correction and the management of reactive power are vital in industrial applications. Thyristor Capacitor Switching Modules are specialized electronic components that use thyristors to switch capacitors in and out of electrical circuits. By doing so, they help improve power factor and reduce reactive power, thereby enhancing the efficiency of industrial electrical systems.

These modules play a crucial role in reducing energy costs and enhancing the power quality in industrial settings, ensuring that electricity is used in the most effective and efficient manner possible.

In summary, these three components - Industrial Battery Chargers, Thyristor Power Regulators, and Thyristor Capacitor Switching Modules - are instrumental in optimizing power management in industrial applications. They ensure that power is delivered reliably, efficiently, and with the precision required for industrial processes. With these components at their disposal, industries can not only enhance their operational efficiency but also contribute to a more sustainable and responsible approach to energy management.

05:51 UTC


Indoor solar cell

Hi guys! We have created a solar cell that transforms artificial low- intensity light into electric power. Where do you think this technology can be used?

07:37 UTC


How to promote our investment policy in Europe?

We are a manufacturer of energy storage batteries and inverters. We are currently looking for some European platforms to publish investment policies for us.

But I don’t know which platforms are suitable for publishing, and how to get contact information and price. Really hope I can get help!

02:43 UTC


Iron and Saltwater Battery How easy is that

03:06 UTC


Can we store Energy by Lifting magnets up and dropping it through Coils

Maybe in a high rise building where we lift lots of magnets up during day time then drop them through metal coils during night time.

  • The whole setup can be inside vacuum chamber and lubricated to lessen friction.
  • The coils can en-circle the building and provide a very large path to generate electricity.
  • Multiple large sized magnets can be used.

Will this work ?

EDITs (below):

  • Pumped storage power exists where we pump water to a high place during day time and at night the water is used to rotate a turbine (the turbine in turn contain magnet and coils). Instead we could directly lift the magnets up using the solar panel / wind energy.
  • Relays (small battery powered) could be used to block / release the magnets.
  • Building height / slope of the coils would move the magnets down the high rise building
15:58 UTC

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