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Renewables Obligation

The Renewables Obligation (RO) is the Government's main mechanism for supporting the generation of renewable electricity. It requires licensed electricity suppliers to source a specific and annually increasing percentage of their electricity from renewable sources. The current level is 9.7 percent for 2009/10, rising to 15.4 percent by 2015/16. This is set out in the Renewables Obligation Order.

It is expected that the RO, together with exemption from the Climate Change Levy for electricity from renewables, will provide support to industry of up to £1bn a year by 2010.

Eligible renewable sources
At the end of 2007, generation from renewable sources eligible under the RO stood at 4.9 percent. This rises to 5 percent if non-eligible sources are included. Source: BERR Energy trends June 2008.

The following table lists eligible renewable sources:

Sources

Eligibility

Landfill gas

Yes

Sewage gas

Yes

Hydro exceeding 20 megawatts declared net capacity (dnc)

Only stations commissioned after 1 April 2002

Hydro 20 megawatts or less dnc

Yes

Onshore wind

Yes

Offshore wind

Yes

Co-firing of biomass

Yes. (There are no restrictions on the amount of co-firing a generator can undertake. However, suppliers can only meet 10 percent of their obligation from co-fired ROCs.)

Other biomass

Yes

Geothermal power

Yes

Tidal and tidal stream power

Yes

Wave power

Yes

Photovoltaics

Yes

Energy crops

Yes

This table shows the eligibility of energy derived from waste:

Type of generating station

Mixed waste

Waste that is purely biomass

Energy crops, agricultural waste and forestry material

Incineration

Ineligible

Eligible (1)

Eligible (1)

Pyrolysis, gasification and anaerobic digestion

Eligible for the biomass fraction of waste

Eligible (1)

Eligible (1)

Combined heat and power (CHP)

Eligible for the biomass fraction of waste produced as good quality CHP (2)

Eligible (1)

Eligible (1)

Co-firing

Ineligible

Eligible (1) (There are no restrictions on the amount of co-firing a generator can undertake. However, suppliers can only meet 10 percent of their obligation from co-fired ROCs.)

Eligible (1)

Notes:
1    Subject to a maximum fossil-derived energy content of 10 percent.
2    CHP stations must be accredited under the CHP Quality Assurance Scheme to be eligible. Schemes that comply fully with the Good Quality benchmark receive Renewables Obligation Certificates (ROCs) on the electricity generated from the biomass fraction of the waste. For schemes that comply partially, this is scaled back depending on their efficiency.

 

How does the Renewables Obligation work?

The Renewables Obligation (RO) is enforced by an Order (Statutory Instrument) made under the terms of Section 32 of the 1989 Electricity Act. The Renewables Obligation Order was introduced in April 2002.
The RO requires electricity suppliers to source an annually increasing percentage of their sales from renewables. For each megawatt hour of renewable energy they generate, they receive a tradable certificate called a Renewables Obligation Certificate (ROC).

Suppliers can meet their obligation by:

When a supplier chooses to pay the buy-out price, the money they pay is put into the buy-out fund. Following the end of an Obligation period, the buy-out fund is recycled to electricity suppliers presenting ROCs.

For more information on government plans and strategies concerning renewable energy, please see the below documents: