FAQs

What are 5 important electric vehicle trends?

1. The electric vehicle adoption will be driven by EV cost competitiveness versus ICE vehicles, but when this tipping point is reached, it is likely to happen quickly. We see already 40+ models in Europe and the United States. Legislations such as the CO2 taxes in Germany are critical drivers for car companies to design and manufacture more and more EVs.

2. Range anxiety is likely to recede with future improvements in battery technology combined with high power charging. As battery technology advances to 500 - 1000km range and high power charging becomes more prevalent, range anxiety is likely to recede. Soon, batteries will no longer be a critical issue.

3. Developments in the Chinese EV market are also expected to drive costs down and improve choice for consumers in Europe and America. Backed by government support, many new OEMs have launched products.

4. Managing charging demand will be vital to protecting the need for further investment in grid capacity. There is surprisingly still much uncertainty about the impact of EVs on the grid. Participants had different views on how significant EVs would be on total energy demand and network infrastructure. Ampcontrol has dedicated its work to bring more answers around this topic.

5. Despite developments in the private sector, Governments have an essential role to play. States, governments, and NGOs have had crucial influences in developing new financial programs, legislations, and similar to push EV technology and EV charging infrastructure worldwide.

How important is OCPP for EV charging and managed electric vehicle charging?

The Open Charge Alliance (OCA) is a global consortium of public and private electric vehicle infrastructure leaders that have come together to promote open standards through the adoption of the Open Charge Point Protocol (OCPP) and the Open Smart Charging Protocol (OSCP).

Since 2009 the Open Charge Alliance has promoted the benefits of the OCPP to make Electric Vehicles networks open and accessible. In that short amount of time, OCPP has become the de facto protocol. OCPP is downloaded more than 20.000 times by unique addresses in more than 100 different countries. 

With the newly released version OCPP 2.0, companies have new free access to the most advanced communication protocol between the software system (central backend system) and charging stations (EVSE). Companies like ampcontrol use these EV industry standards to implement innovations faster and without any risks in running operations.

What is ISO 15118 or Plug&Charge and what role do they play for EV charging?

ISO 15118 Road vehicles are a  vehicle to grid communication interface and an international standard defining a vehicle to grid (V2G) communication interface for bi-directional charging/discharging of electric vehicles. Although it was initially developed for V2G, ISO 15118 is highly essential for none-V2G applications, related to managed charging (V1G). 

 

These standards contain conceptual models that characterize and standardizes communication between charging stations and electric cars. For instance, once the EV and the EVSE support the standard, many battery data can be forwarded to the central charging system.

Plug & Charge is a technological concept initially introduced by ISO 15118, the international standard for charging electric vehicles (EVs). Companies like Hubject now provide a market-ready, game-changing technology for intuitive and secure charging.

What are peak demand charges and why are they important when charging electric vehicles?

Peak demand is the highest amount of energy you are consuming, usually over a 15-minute interval, over a month. Keep in mind that peak demand refers to the energy consumed at a specific moment, whereas consumption charges are calculated using the building's overall kWh consumption during a billing period.

Utilities apply demand charges based on the maximum amount of power that a customer used in any interval during the billing cycle. Demand charges usually apply to commercial and industrial customers, who tend to have higher peak loads (i.e., peak power demand) than residential customers. Most utility rates specify the maximum power demand a customer is allowed to have: exceeding the maximum power demand for consecutive months can result in being moved to a different rate with higher demand charges.

Electric vehicles charge at higher power (i.e., 22 kW). This is 10x of an AC's power level. Once a company decides to install several charging stations at one single location, he can face a high power demand. Although the kWh price can be low and might not conclude to a high energy bill, peak demand charges are easily doubling because of EV charging.

Amcontrol has developed Machine Learning-based algorithms to reduce these costs for companies.

What is load sharing (load balancing) and where is it used for EV charging?

Load sharing, load balancing, or daily peak demand reserve refers to the use of various techniques by electrical management systems to store excess electrical power during low demand periods for release as demand rises. In a central demand balancing system, the power company sends a signal down the line. More advanced and modern methods like ampcontrol use direct IoT communications to devices to send optimized load information or EV charging commands to a charging station. Load sharing is required in regions with grid constraints and with costly infrastructure upgrades when installing or adding more EV chargers to the network.

 

The electric grid in front or behind the meter always has a limited capacity. This is especially relevant in many multi-family places that were not built to have a higher load from the parking area at night. Workplace charging might have the luxury of having 6-10 hours to get all the cars charged up and so can opt to split the total power available among all vehicles plugged into the circuit.

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