Renewable Heat Incentive Inquiry examining botched energy scheme
Inquiry set up after public concern over scheme's huge projected overspend
Retired Court of Appeal judge Sir Patrick Coghlin chairing inquiry at Stormont
Final day of closing statements from key figures involved in the scheme
Our apologies for missing the first few minutes of this morning's session - that was due to a technical fault, which has now been fixed.
Want to watch the proceedings? Press play on the video at the top of this page.
Conor Macauley
BBC News NI agriculture correspondent
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BBC News NI
Inquiry chair Sir Patrick Coghlin said he was still not sure what DUP leader Arlene Foster meant when she said she was "accountable but not responsible" for the actions of her ministerial adviser.
He made the remark as a barrister for the DUP gave closing submissions to the panel.
Image source, ReutersIn September, Mrs Foster told the inquiry she was "accountable but not responsible" for the actions of Dr Andrew Crawford.
The inquiry has heard that he sent confidential government documents about the scheme to relatives who were potential or actual beneficiaries of the energy initiative.
On Thursday, Sir Patrick said of the "accountable but not responsible" phrase offered by Mrs Foster: "I, for myself, am not entirely clear what that might mean."
BBC News NI
An independent inquiry into the RHI scandal was established in January last year by the then finance minister Máirtín Ó Muilleoir.
He ordered it in the wake of the huge public concern at what was then a major political crisis surrounding the scheme.
The RHI Inquiry began in November last year and Sir Patrick Coghlin (below), a retired Court of Appeal judge, is its chair and has been given full control over how it operates.
Image source, PacemakerIt is looking at:
For more information on the RHI Inquiry, you can read our handy Q&A.
When the scale of the overspend emerged, public and political concern rocketed.
As the minister in charge of the Stormont department that set up the RHI scheme, the Democratic Unionist Party (DUP) leader Arlene Foster faced calls to resign from her role as Northern Ireland's first minister in December 2016.
Image source, PAShe resisted and Sinn Féin's Martin McGuinness then quit as deputy first minister in protest at the DUP's handling of what had by then become a full-blown political crisis.
That move brought about the collapse of the Northern Ireland Executive. Now, almost two years on from that, Northern Ireland remains without a devolved administration.
You can find much more detail on the RHI scheme in our need-to-know guide.
The budget of the RHI scheme ran out of control because of critical flaws in the way the initiative was set up.
Claimants could effectively earn more money the more fuel they burned because the subsidies on offer for renewable fuels were far greater than the cost of the fuels themselves.
At one point the estimate for the overspend was set at £700m if permanent cost controls weren't introduced - temporary cuts have since pulled the budget back on track for now.
Whatever the scale of the bill, it will have to be picked up by the Northern Ireland taxpayer.
The Renewable Heat Incentive scheme - or RHI for short - came to the fore of the Northern Ireland public's knowledge in late-2016.
The fallout from the scandal attached to it is still being felt in the region's politics today.
Image source, Getty ImagesThe scheme was set up by the Northern Ireland Executive in 2012 as a way of encouraging people to switch from using fossil fuels to renewable sources for generating their heat.
Those who signed up were offered financial incentives to buy new heating systems and the fuel to run them.
And so... the final curtain - it's the last day of the Renewable Heat Incentive Inquiry.
We've had just about everything over the past year and more - high drama, bad jokes and, frankly, the odd day of thumb-twiddling boredom too.
Image source, AFPIt's a bit of a trip back in time this morning as we hear from lawyers representing some of the Department of Enterprise, Trade and Investment (DETI) officials who gave evidence back in the inquiry's early witness sessions.
Business starts shortly so stay with us for the usual live coverage and commentary.