Reference no: EM132842817

ENGT5114 Sustainable Energy - De Montfort University

Assignment - Techno-economic Assessmentof Local Energy Systems

Overview

You are a Consultant at a reputableDe Montfort University spin-off company that specialises in renewable energy solutions. Your client is a multinational property developer on the verge of moving into the UK property market. They are looking to build an estate of 50 new 3-bedroom homes, each for a family of two adults and two children. Each home is gable-roofed with eachside of the roof being an 8m by 4m rectangle. Your client has no specific location in mind but is looking to meet all or part of the estate's electricity needs through photovoltaic energy generation, if economically viable.

Tasks

Based on photovoltaic energy generation potential alone, choosea suitable location (longitude and latitude) for the estate. Using an appropriately annotated map, justify your choice.

Using the "Load Analysis" sheet of PvSA (the Photovoltaic (PV) system modelling tool developed for this course) and thehousehold appliance power ratings published by the Centre for Sustainable Energy (CSE), develop the summer and winter load profiles for one home. You should select between 5 and 15 appliances from the list provided by CSE,for an annual demand in the range 3000 - 4300 kWh. You can adopt a realistic consumption profile of your choiceand assume the summer and winter consumption profiles are similar to the autumn and spring consumption profiles, respectively. Provide the following in your report:

Your final summer and winter load tables.

The seasonal load summary table, showing the average daily daytime and night-time consumption and peak load for each season, as calculated by PvSA.

The annual load summary table, showing the average daily consumption and peak load.

Summary plots for the average daily consumption and peak load.

For the home in Task 2, design the most economical rooftop PV system that covers both sides of the roof of the houseand assess its economic viability for a 30-year period. You can use the optimal azimuth angle for the location but the slope is restricted to the range 20°-40°. Assuming a grid-connected system on a grid electricity tariff of 15 p/kWh and an annual tariff inflation rate of 2.6%:

Is your proposed investment financially viable?

How much of the home's electricity demand is met by the system?

What are the maximum and actual capacity factors of the system?

How much CO2 is saved annually? Use the average carbon intensity in December 2020 for your chosen locationand assume that the carbon intensity of electricity generated from PV systems is 85 gCO2/kWh. The carbon intensity of grid electricity consumed from any region of the UK can be obtained from the Carbon Intensity API.

This task would require you to use all the sheets of the Workbook but the "PPA Analysis" sheet.

As an alternative to rooftop solar, design and analyse a singlesolar farm that is capable of satisfying 10% of the estate's total electricity demand over a 30-year period; determining its total investment cost, net present value, and total customer savings over this period. For the purpose of this assessment, the solar farm is installed on a nearby level field, and, therefore could be of an orientation of your choice. The solar farm is operated by an Independent Power Producer (IPP). Therefore, when selecting the slope and azimuth angles for your system,dobear in mind that the goal of an IPP is profit maximization. Repeat your analysis for 20%, 30%, 40% up to 100% of the total estate demand and plot the graphs of total investment, net present value, and total customer savings over the 30-year period versusthe percentage ofestate demand satisfied. Proffer a suitable explanation for the trend portrayed by these graphs. Assume the following:

The Power Purchasing Agreement (PPA) between the estate and the IPP is such that if the IPP cannot satisfy the demand it is contracted to supply, it pays a penalty that isthe difference between the PPA tariff and the grid electricity tariff for each kWh not supplied.
The same demand profile for all 50 homes on the estate.

The IPP charges the estate 12.75 p/kWh consumed, increasing by 1.5% annually.

By considering the demand side, discuss how the consumption profile of the estate can be modified to further reduce the cost of the system you designed in Task3, without reducingits total annual energydemand.

Based on your findings in Tasks 3 and 4, suggest the most economical option to power the estate.

Prepare an assessment report for your client outlining your findings. Your report should clearly and logically summarise the outcomes of Tasks 1 to 6 with sufficient information to justify your findings and recommendations. Also detail the steps, as well as any assumptions used to obtain these findings, in order to allow your client to assess their appropriateness. Note that the spreadsheet itself cannot be submitted; all Information must be in the report.

Attachment:- Sustainable Energy.rar