The UK wind industry has reached the "significant milestone" of having more than two gigawatts (GW) of operational generation capacity.
The turbines takes the UK's wind power capacity past two gigawatts
The 2GW mark was passed on Friday when the Braes O'Doune wind farm, near Stirling, began producing electricity.
Trade and Industry Secretary Alistair Darling described it as a "major landmark" for the UK wind industry.
The government has set a target for 10% of electricity to be generated from renewable sources by 2010.
The 36-turbine Braes O'Doune wind farm, built and operated by Airtricity, has a generating capacity of 72 megawatts (MW), enough to supply electricity to 45,000 homes in the area, according to the British Wind Energy Association (BWEA).
Maria McCaffery, BWEA's chief executive, said passing the 2GW mark, equivalent to two coal-fired power stations, was a "tremendous step forward".
"This is a day for celebrating the achievement of a significant milestone for our industry and underlining the position of wind energy as the true leader in the renewables revolution," she said.
LEADING WIND ENERGY NATIONS
1. Germany - 20,622MW
2. Spain - 11,615MW
3. USA - 11,603MW
4. India - 6,270MW
5. Denmark - 3,136MW
6. China - 2,604MW
7. Italy - 2,123MW
8. UK - 2,034MW
9. Portugal - 1,716MW
10. France - 1,567MW
Mr Darling said renewable electricity played a central role in the government's efforts to curb greenhouse gas emissions.
"This is a major landmark. In the last 20 months we have doubled the amount of wind generated electricity we have."
Mr Darling, who officially opened the Scottish wind farm, added that more green energy sources were needed.
"If you are serious about tackling climate change then we have got to be serious about making sure that we have more renewable forms of energy, including wind power.
"We want 20% of our electricity to come from these green sources (by 2020) and we are working hard on removing any barriers to achieving that aim."
The government wants 20% of electricity to come from renewables
Latest government figures show that 4.2% of the UK's electricity is generated by renewables, including wind, solar, hydro and biomass.
Onshore wind farms have proved to be controversial, with a number of high-profile projects facing fierce opposition from local residents.
Plans to create England's largest wind farm in Cumbria were thrown out last March after campaigners said it would ruin the landscape of the Lake District.
The £55m development would have seen 27 turbines, each 115 metres (377ft) high, erected at Whinash, near Kendal.
And proposals to create one of Europe's largest onshore wind farms on Lewis, the most northerly Hebridean island, have been challenged by wildlife groups.
They say the 181-turbine development will harm important peat bog habitat, and threaten wild bird populations.
However, local councillors on Thursday backed the £500m project, although a final decision on whether the scheme can go ahead is likely to be made by the Scottish Executive.
Despite having some of the best wind resources in Europe, the UK is still a long way behind the world's leading nation on wind power.
Germany has more than 20GW of wind energy capacity, 10 times as much as the UK.
HOW WIND TURBINES WORK
1. Wind causes blades to rotate
2. Shaft turns generator to produce electrical energy
3. A transformer turns this into high-voltage electricity
4. Electricity is transmitted via the power grid