SmartHG:User stories

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Contents

Introduction

The electrical grid is an energy providing service that been around for over 200 years and has become an essential lifeline for almost every human being. Its basic architecture has not radically changed in these years even though the demand-side has been through revolutionary change the past years. The forecasts tells that the consumption will only rise the future, while the participants will require a higher stability so that they do not lose any money. The capacity of the electrical grid is fixed and will require huge investments if they should be able to tackle the rising consumption, and if they are able to that, it will only be preliminary solution since the consumption will exceed its capacity within a small time interval. The greater consumption will also increase the variation of the energy usage which will make the grid unstable unless energy generators are not overproducing as default. From the grid's point of view, there are two logical actors connected to the network, a supplier and a consumer. Traditionally, the suppliers has been large power-plants which had the responsibility to generate enough energy to a large quantity of the consumers. The centralization has many benefits in terms of costs and maintenance, but also have it weaknesses with regard to energy loss and single point of failure. The consumer has always been considered as a passive participant that had the permission to consume independently of each other and energy prices. However, by making the consumers active participants it is possible to control the demand it such a way that it is more beneficial for the suppliers in regard to expenses. To make the consumers a part of the electrical system, it is required that they either aware of supplier's intention or the supplier can remote control some of the consumer's electrical equipment. Both solutions should somehow reward the consumer for contributing to a lower consumption, this could be a lower energy bill.

Actors

  • Suppliers
  1. Renewables
  2. Powerplants
  • Consumers
  1. Transmission lines
  2. Customers

Customers

Tariffs and expenditures

  • As a customer, I want to save money on my energy bill so that I can spend it on other things.
  • As a customer, I want the payback time of the equipment to be within 1-5 years of the investment so that the time frame for real price savings is lowered.
  • As a customer, I want utility tariffs based my energy consumption pattern so that the effort I put into it will be reflected on my energy bill.
  • As a customer, I want fairness in utility tariffs so that my neighbor cannot save more than me if we follow the same energy pattern and have the same energy usage.
  • As a customer, I want to see what the tariffs are from my computer or mobile phone so that I can decide if the price for during a certain task is profitable.
  • As a customer, I want to pick some of the smart appliance to be controlled by the tariffs, either direct or indirect, so that I do not have to think about when the the tariffs are low.
  • As a customer, I want my home automation system to calculate if it is most profitable for me to use my own generate renewable energy or pass it onto the power grid so that I will always gain the maximum profit.

Authorization to energy information

  • As a customer, I want to control who has access to my data so that my consumption profile is not exposed to unauthorized people.
  • As a customer, I want my privacy to be sustained so that neighbours and burglars cannot detect if anyone is home if they only eavesdrop on the wireless communication.

Utility control

  • As a customer, I want to have complete control of my smart grid-enabled devices so that other parties cannot interfere my behavior if I do not let them.
  • As a customer, I want be able to get an overview of energy usage so that I am able to see where the expenses lie.
  • As a customer, I want to inspect my power consumption and get a visual overview of what equipment that draws the most current so that I can understand what units that costs the must.
  • As a customer, I want a seamless access to my smart appliances so that newly brought equipment easily can be integrated into home automation system and HAN.
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