Watt Direction

11 Charts from DUKES 2025

A selection of data points that caught my attention - covering costs, consumption, storage, imports, energy from waste and transportation fuels

Aug 26 • 

Ed Hezlet

9

6

Air Conditioning & Air-to-Air Heat Pumps

Why the UK should encourage a cheaper form of heat pump adoption - that also allows you to cool your home

Aug 1 • 

Ed Hezlet

7

2

May 2025

UK Combined Cycle Gas Power Stations: Capacity Factors

Availability and Opportunity

May 23 • 

Ed Hezlet

7

1

The Missing Chart from the UK Energy Debate

My attempt to split out the gas and carbon costs from 2012-2025 for a UK combined cycle gas turbine. Now that coal has left the UK grid, carbon taxes on…

May 6 • 

Ed Hezlet

17

13

April 2025

UK Combined Cycle Gas Power Stations: Other Costs

My attempt to analyse the non-gas and non-carbon costs for UK combined cycle gas turbines

Apr 29 • 

Ed Hezlet

9

1

UK Combined Cycle Gas Power Stations: Variable Costs

Understanding Gas and Carbon Costs

Apr 17 • 

Ed Hezlet

8

16

March 2025

UK Gas Power Stations: Capital Costs

An investigation into the capital costs of UK gas power stations, covering both combined cycle and open cycle technologies

Mar 31 • 

Ed Hezlet

7

4

Breezy Assumptions from the Seventh Carbon Budget?

On the 26th of February 2025, the Climate Change Committee published its Seventh Carbon Budget. I'm concerned that some of the assumptions with respect…

Mar 11 • 

Ed Hezlet

9

5

February 2025

Gas Power Plants - an Introduction

Gas was the second largest source of UK electricity generation in 2024, providing 26.3% of our electricity. Having analysed offshore wind power in some…

Feb 25 • 

Ed Hezlet

8

Removing the Ampersand in Oil & Gas

An essay on pragmatism in the UK North Sea

Feb 10 • 

Ed Hezlet

4

4

January 2025

UK Electricity Bill Breakdown

Interested in the cost drivers behind your domestic electricity bill?

Jan 28 • 

Ed Hezlet

14

3

UK Offshore Wind - Operating Costs

An exploration of cost trends through time, turbine sizes and potential repowering of UK offshore wind farms

Jan 20 • 

Ed Hezlet

18

7