Energy

Energy

Renewable Power

World energy: Global primary energy consumption reached a new record of 620 exajoules (EJ) for the second consecutive year in 2023, up from 607 exajoules in 2022. Despite efforts to decarbonize the economy, fossil fuels still accounted for over 80% of the global energy mix in 2023. Reduce fossil fuels and decarbonize with renewables: Britain used offshore wind to get off coal, US electrify grid for vehicles to get off oil, Solar and batteries for off peak hours to get off gas. Renewables like solar and wind accounted for 8% of the energy generated in 2023, followed by hydroelectric (6%) and nuclear (4%). The amount of renewable energy capacity added to energy systems around the world grew by 50% in 2023, reaching almost 510 gigawatts (GW), with solar PV accounting for three-quarters of additions worldwide. Nearly 50 countries now generate more than 50 per cent of their electricity from renewable energy sources. Seven countries now generate 100% of their electricity from renewable energy. Albania, Bhutan, Nepal, Paraguay, Iceland, Ethiopia and the Democratic Republic of Congo produced more than 99.7 per cent of the electricity they consumed using geothermal, hydro, solar or wind power. An estimated 507 gigawatts of renewable electricity were added to grids around the world in 2023 — a new record. Right now, the world is on track to reach about 7,300 gigawatts — or 7.3 terawatts — of total renewable capacity by 2028, a 75 percent increase over the cumulative 4.1 terawatts in 2023. And yet, despite this astounding growth, that would still fall short of the goal set at COP28 last year of tripling renewables by 2030 — a target that would require total renewable capacity to reach 11,000 gigawatts.


Energy the capacity to do work.  Energy exists in various forms: kinetics, potential, thermal, electrical, 

green technologies,  ionization energy, mechanical energy, solar energy.

Energy

A high-voltage direct current (HVDC) electric power transmission system uses direct current (DC) for electric power transmission, in contrast with the more common alternating current (AC) transmission systems.

HVDC lines are commonly used for long-distance power transmission, since they require fewer conductors and incur less power loss than equivalent AC lines. Many of these HVDC lines transfer power from renewable sources such as hydro and wind.