Surabaya, East Java, Indonesia, located in the tropics, is a very suitable location for solar power generation throughout the year. This is due to its consistent sunlight exposure and tropical climate characterized by wet and dry seasons.
The climate in Surabaya is tropical, with high temperatures and humidity throughout the year, making it quite suitable for solar PV installations. However, considering the dense urban development in Surabaya city itself, large-scale solar PV installations might be challenging due to space constraints.
The projects, which are designed to meet the growing demand for PV glass in the overseas market, will be launched by Indonesia Flat Photovoltaic Co., Ltd, a wholly owned subsidiary of Flat Glass Group. The new investment is expected to expand its PV glass production capacity, especially in Indonesia, to reduce costs.
However, considering the dense urban development in Surabaya city itself, large-scale solar PV installations might be challenging due to space constraints. Areas surrounding Surabaya like Sidoarjo and Gresik could be more suitable for large-scale solar PV installations due to more available land.
K value refers to the voltage drop of the battery in unit time, usually expressed in mV/d, and is an indicator to measure the self discharge rate of lithium battery. OCV1 is measured at time t1. Measure OCV2 at time t2. K=(OCV1-OCV2)/(t2-t1)。 The K value of the battery with good performance is generally less than 2mV/d or 0.08mV/h.
The capacity (K or C value) of a battery depends on the current with which it's discharged. The lower the discharge current, i.e. the longer the discharge time, the greater the usable capacity. And vice versa, the greater the discharge current, the less the available capacity. The “K or C” index always indicates the discharge time in hours.
It is primarily attributed to irreversible chemical reactions occurring within the battery. The “ K-value” is a crucial parameter used to quantify the self-discharge rate of a lithium-ion battery. It represents the voltage drop per unit of time under specific conditions (e.g., high temperature or room temperature).
The first important parameters are the voltage and capacity ratings of the battery. Every battery comes with a certain voltage and capacity rating. As briefly discussed earlier, there are cells inside each battery that form the voltage level, and that battery rated voltage is the nominal voltage at which the battery is supposed to operate.
Inverters of the past simply fed solar power into the grid. Inverters of the future are required to instead dynamically work with the grid to increase its resilience, reliability, safety and security.
In 2024, the PV inverter market experienced consistent growth as a result of increasing solar installations in Asia-Pacific (particularly China and India) with government incentives and declining solar panel prices. Residential surged in Europe, fueled by energy security needs following the Russia- Ukraine war.
The proliferation of smart inverters could expand the possible size of the solar market in a big way. Individual distributed energy resources (DERs) will now come equipped with grid-support functionality, so they will be more of an asset to the grid than a burden.
For an average-sized installation, inverters typically range between $1000 and $1500. That cost can go up quickly though as the installation gets bigger. Each year, the National Renewable Energy Lab performs a cost benchmark of the solar industry, looking at average installation costs, inverter and panel costs, and a host of other related topics.
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