A Wind Power Pioneer
Denmark is fortunate to have extremely good wind speeds—averaging 7.6 meters per second (California’s Altamont Pass wind farm sees 5.3 to 7.1 m/s, and power output rises as the cube of windspeed). The country has a goal for windpower to supply 50 percent of electricity consumption by 2020, and it is well on its way. In 2015, wind power supplied 42 percent of domestic electricity consumption.
— Mike Hudema (@MikeHudema) 3 mars 2016
Denmark was the first country in the world to build massive offshore wind farms, installing a 5 MW wind farm two kilometers from the coastline in 1991. Since then the country has installed four other offshore wind farms bringing offshore wind capacity to 1,271 MW. The country also has over 300 onshore wind turbines bringing total wind capacity as of January 1, 2016 to 5,070 MW. To reach its goal of 50 percent wind power by 2020, the country has an initiative to deploy an additional 1,000 MW of offshore and 500 more MW of nearshore wind turbines, as well as to replace old onshore wind turbines with new higher-capacity ones.
— greenami & da silva (@greenami1) 10 mars 2016
In fact, Denmark is one of the most energy-efficient countries in the EU and the OECD, partly because many Danish companies have optimized their industrial processes, facilities, and equipment. Denmark’s goal is to reduce its final energy consumption by 7 percent in 2020 compared to 2010. The different energy sectors in Denmark—oil, electricity, natural gas, and district heating—are each assigned a share of energy savings to reach depending on their market share. The trade associations for those sectors then delegate responsibility for those savings to its member companies, also based on market share. The country also quadrupled new buildings’ thermal efficiency from 1977, and forbade oil- and gas-fired heating of new buildings from 2013.
— The Ecologist (@the_ecologist) 5 mars 2016
Combined Heat and Power
Denmark is also a leader in combined heat and power (CHP). Twelve percent of all power in Denmark is generated from biomass and organic waste in CHP plants, and more than 80 percent of Danish district heating is cogenerated with electricity. Today, there are 670 decentralized CHP plants around the country. Most of the biomass being used in Denmark today is from straw and biodegradable waste, and 30 percent is imported from Eastern European countries and Canada in the form of wood pellets and wood chips. Biomass proponents claim that burning wood pellets is a carbon-neutral form of energy because the plants that are the source of biomass capture as much CO2 when growing as they emit when burned. However, many others believe harvesting wood for biomass is anything but carbon-neutral and threatens many diverse ecosystems throughout the world.
In December 2014, the Danish Ministry of Climate, Energy, and Building announced that only sustainably produced biomass would be purchased. The agreement includes requirements for the entire biomass supply chain and requires that forests that supply biomass for energy production be replanted. However, the debate continues, as some argue that planting is no guarantee of healthy maturation—about as much biomass belowground must also be protected in its volume and biodiversity, and although the biomass may be sustainably produced, the magnitude of the biomass material harvested may be unsustainable.
A Fossil-Fuel-Free Future
- Wind scenario: primarily wind, solar PV, and CHP deployment, including massive electrification of the heat and transport sectors
- Biomass scenario: CHP for electricity and district heating.
- Bio+ scenario: Replacing coal, oil, and natural gas with bioenergy. Wind energy remains at 2020 level (50 percent of electricity).
- Hydrogen scenario: Highest wind deployment of any scenario along with hydrogen production.
The country does face challenges ahead. “The continued governmental support around Europe to renewable energy with zero marginal costs drives conventional units out of the market and will make the pricing of electricity a strange business,” Parbo told RMI. “This also means that the ability to supply enough electricity in periods with no wind and no solar production will become the main future challenge.”
— Brian Vad Mathiesen (@BrianVad) 25 décembre 2015
But the main conclusion of the Danish Energy Agency’s report is that it is technically feasible for the Danish energy system to be 100 percent fossil fuel free. And it’s well on its way.
Laurie Guevara-Stone is the Writer/Editor for RMI, where she writes blogs and articles on all the issues that RMI addresses.
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