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Metered Electricity Generation December 2023

Renewable energy sources accounted for a record 60% share of metered electricity generation in December 2023

Online ISSN: 2990-8183

CSO statistical release, 14 February 2024, 11am

Key Findings

Renewable energy sources produced 60% of metered electricity generation in December 2023 which was the highest monthly renewable share in the 2020-2023 series (See Table 2C).
There were 1.5 million megawatt-hours (MWh) of wind-generated electricity in December 2023 which was the highest for a single month in the time series (See Table 2B).
Metered electricity generation from Solar increased from 20,120 MWh in 2022 to 439,162 MWh in 2023 (See Table 3).
Imports of electricity in 2023 were 3.7 million MWh which was 135% higher than the 2022 figure of 1.6 million MWh (See Table 8B).
The lowest half-hourly proportions of renewable energy in December 2023 were 56% between 7:30am and 10:30am (See Table 6A).
The highest and lowest half-hourly generation periods in December 2023 were between 5pm and 5:30pm when it was 71,015 MWh and between 3:30am and 4am when it was 46,104 MWh (See Table 5A).

Statistician's Comment

The Central Statistics Office (CSO) has today (14 February 2024) published Metered Electricity Generation for December 2023.

Commenting on the release Dympna Corry, Statistician in the Environment and Climate Division, said: "The release shows how the proportion of metered electricity generated from renewable fuel sources (Wind, Solar, Renewable Hydro, and Other Renewable) and non-renewable fuel sources varies by time of day and by month.”

Monthly and Annual Peak Demand

In 2023, peak electricity demand exceeded 700,000 megawatt-hours (MWh) in eight half-hourly periods between 4:30pm and 8:30pm (See Table 5A and Figure 1). The highest 30-minute period for the year was between 6pm and 6:30pm at 750,338 MWh. The time period with the highest half-hourly generation within a single month was in January 2023 when 73,791 MWh were generated between 5:30pm and 6pm.

Natural Gas and Wind

In December 2023, Wind accounted for 55% and Gas accounted for 32% of metered electricity generation (See Table 2A). The overall rates for 2023 were 47% for Gas and 39% for Wind (See Table 3).

Renewable Hydro

There were 933,228 MWh of metered electricity generated by Renewable Hydro in 2023 which was the highest in the 2020-2023 time series (See Table 3).

In 2023, December was the month with the highest generation from Renewable Hydro at 121,933 MWh (See Table 2B).

In 2023, Renewable Hydro was the fourth highest fuel source for metered electricity generation with 933,228 MWh compared with 593,508 MWh for Waste and 439,162 MWh for Solar (See Table 3).

Monthly Renewable Hydro generation exceeded that of Solar for January to April 2023 and for August to December 2023 (See Table 2B).

Solar

Metered electricity generated from Solar increased from 20,120 MWh in 2022 to 439,162 MWh in 2023 (See Table 3). The highest ever quantity of metered electricity generation from Solar in a single month was in June 2023 at 68,120 MWh (See Table 2B).

The monthly half-hourly period in 2023 with the highest amount of metered electricity generated from Solar occurred between 2pm and 2:30pm in May 2023 with a monthly figure of 3,505 MWh for that 30-minute period (See Table 5C).

Electricity generated by households and enterprises from rooftop solar panels, primarily for own consumption, is not included in this release.

Coal

Electricity generated from Coal increased from 723,440 MWh in 2020 to 2.8 million MWh in 2021 and 2.5 million MWh in 2022 (See Table 3). In 2023, electricity generation from Coal was 1.2 million MWh.

Exports and Imports of Electricity

In 2023, 0.4 million MWh were exported which was well below the 2022 annual figure of 1.3 million MWh (See Table 8A). There was a sharp increase in Imports of electricity in 2023 to 3.7 million MWh compared with 1.6 million MWh in 2022 (See Table 8B).

Peak Half-hourly Metered Electricity Generation 2020-2023

There is an increase in metered electricity generation leading into breakfast time and a further increase around 5pm to 7pm (See Figure 1). Peak generation in the evening is typically met by increasing the share of fossil fuels in metered electricity generation.

	2020	2021	2022	2023
00:00-00:30	573669	559393	584890	547342
00:30-01:00	567069	556078	581774	539575
01:00-01:30	560981	551880	575653	529739
01:30-02:00	547217	536887	558593	517455
02:00-02:30	540277	532882	556135	512552
02:30-03:00	530586	522045	547581	499017
03:00-03:30	530774	522755	550903	497423
03:30-04:00	528179	517303	545171	489827
04:00-04:30	538450	526515	553382	499168
04:30-05:00	544148	531371	557620	498673
05:00-05:30	565619	549884	577637	521534
05:30-06:00	576468	560862	597540	536036
06:00-06:30	596117	580796	629067	565300
06:30-07:00	615335	605283	657782	588803
07:00-07:30	638219	626509	681544	615171
07:30-08:00	658210	647180	701489	642900
08:00-08:30	669859	662188	707189	651693
08:30-09:00	677001	672425	713177	664114
09:00-09:30	682545	673616	714031	668969
09:30-10:00	687338	673593	714756	671376
10:00-10:30	691210	676013	716257	670062
10:30-11:00	695673	678232	716521	669513
11:00-11:30	704959	682978	719843	674413
11:30-12:00	709242	684535	719270	674571
12:00-12:30	710676	685104	720968	679149
12:30-13:00	702219	677769	715479	678448
13:00-13:30	698661	675280	717804	676975
13:30-14:00	690149	665191	711181	665313
14:00-14:30	692053	665024	715665	669326
14:30-15:00	693895	666460	718716	664564
15:00-15:30	701792	674375	727018	671237
15:30-16:00	720538	694851	743919	679842
16:00-16:30	736291	712438	759537	695862
16:30-17:00	761617	740584	782032	720979
17:00-17:30	771818	750444	787329	739203
17:30-18:00	772930	754522	788204	748824
18:00-18:30	763842	748431	783411	750338
18:30-19:00	749833	734348	771111	740397
19:00-19:30	740281	724188	764273	734255
19:30-20:00	722124	700144	744761	715625
20:00-20:30	711294	687166	732477	700653
20:30-21:00	690409	660752	707234	681959
21:00-21:30	678356	645819	691495	669767
21:30-22:00	648089	613233	659665	638549
22:00-22:30	624035	597606	637870	618629
22:30-23:00	600755	582339	614070	582923
23:00-23:30	592010	576578	606171	568546
23:30-24:00	577892	563709	589772	553891

Primary Fuels used in Annual Metered Electricity Generation

Gas was used for 48% of metered electricity generation in 2020 (See Table 1). This decreased to 46% in 2021 when there was a substantial increase in the Coal share to 9%. Wind generation accounted for 39% of metered electricity generation in 2020 and in 2023. Metered electricity generated from Solar increased from 0.1% in 2022 to 1.5% in 2023.

Table 1 Proportion of Metered Electricity Generation by Selected Fuel Types 2020-2023

Generation Trends During December 2020-2023

There were 2.8 million MWh of metered electricity generated in December 2023 which was 6% lower than the December 2022 figure of 3.0 million MWh (See Table 2A).

Table 2A Metered Electricity Generation by Primary Fuel Category December 2020-2023

Primary Fuel Share in Monthly Metered Electricity Generation

Natural Gas is the main fuel used to generate electricity. In 2023, it varied from a 61% share in both May and June 2023 to 32% in December (See Table 2B). Wind produced 55% of total metered electricity generation in December 2023 compared with 25% of metered electricity generation in both May and June.

In 2022, the highest proportion of electricity generated from Gas was 63% in August while for Wind it was 55% in February.

	Battery Storage	Biomass/Peat	Coal	Gas	Renewable Hydro	Hydro Storage	Oil	Solar	Waste	Wind
January	0	1	5	43	4	1	0	0	2	43
February	0	2	3	45	2	1	2	0	1	43
March	0	2	4	46	3	1	1	1	2	40
April	0	2	4	48	3	1	0	1	2	38
May	0	2	4	61	2	0	0	3	2	25
June	0	2	4	61	0	1	0	3	2	25
July	0	0	4	50	3	1	0	3	2	38
August	0	0	3	48	4	1	0	3	2	38
September	0	0	5	49	2	1	0	2	2	37
October	0	2	4	48	4	1	1	2	2	36
November	0	1	4	42	4	1	0	1	2	43
December	0	1	4	32	4	1	0	0	2	55

Table 2B Metered Electricity Generation by Primary Fuel Category January-December 2023

Monthly Renewable Energy Share

December 2023 had the highest monthly share of renewable energy in metered electricity generation at 60% followed by February 2020 and February 2022 at 59% (See Table 2C). July 2021 at 16% had the lowest renewable energy share during the January 2020 to December 2023 time series. The renewable energy share by month and half-hourly period for 2023 is given in Table 6A.

Table 2C Renewable Energy Percentage of Metered Electricity Generation January 2020-December 2023

Annual Metered Electricity Generation

Gas and Wind were the main primary fuels used in 2020-2023. In 2023, there were 14.2 million MWh of electricity generated from Gas compared with 11.7 million MWh generated from Wind (See Table 3).

Table 3 Metered Electricity Generation by Primary Fuel Category 2020-2023

Daily Metered Electricity Generation

In December 2023, the highest daily metered electricity generation figure was 117,543 MWh on 06 December (See Table 4A). The lowest daily metered electricity generation figure in 2023 was 54,644 MWh on 02 July (See Table 4B).

Table 4A Metered Electricity Generation for All Primary Fuels by Day December 2020-2023

Table 4B Metered Electricity Generation for All Primary Fuels by Day January-December 2023

Table 4B Metered Electricity Generation for All Primary Fuels by Day January-December 2023
Megawatt hours (MWh)
Day	January	February	March	April	May	June	July	August	September	October	November	December
1	74,479	96,493	81,851	84,446	70,506	73,246	66,611	78,693	72,356	66,074	80,588	98,353
2	91,242	99,621	81,796	70,648	81,438	69,383	54,644	76,982	63,988	74,027	87,710	87,265
3	95,972	88,107	82,203	94,325	91,122	66,219	65,875	74,181	64,458	75,146	81,478	87,108
4	95,589	86,207	81,333	97,493	79,375	61,406	78,820	75,957	75,236	84,110	83,291	104,813
5	93,957	78,760	80,785	84,350	75,187	70,008	75,637	77,856	81,324	90,491	75,094	96,159
6	89,256	94,009	90,810	79,516	67,902	74,810	88,959	57,845	83,331	82,555	92,617	117,543
7	91,284	85,130	92,088	91,010	78,277	74,580	85,215	64,221	78,194	68,883	89,465	101,145
8	82,971	105,069	104,958	88,506	74,890	75,862	78,908	71,130	76,795	66,117	90,521	101,147
9	98,961	92,086	113,205	84,354	84,029	77,769	66,036	80,905	67,645	75,334	96,863	94,857
10	101,417	100,608	88,972	70,640	93,397	67,603	77,334	83,814	64,713	79,559	93,172	89,085
11	96,990	90,138	101,670	84,058	97,329	64,127	75,805	84,765	72,880	74,282	85,002	91,625
12	100,298	90,101	80,262	99,386	80,820	71,744	71,694	74,495	76,479	76,523	81,641	88,049
13	95,315	105,537	94,539	83,597	67,875	73,852	70,074	61,936	83,169	72,651	91,968	93,422
14	86,012	112,119	91,793	85,997	74,858	71,615	76,379	72,405	72,678	66,678	89,255	93,872
15	84,579	94,431	103,764	75,720	73,502	71,032	71,162	71,737	78,153	68,708	84,818	88,716
16	87,398	97,127	98,188	70,769	73,061	81,891	60,084	72,771	73,321	83,512	94,014	88,171
17	102,952	100,721	85,130	82,749	76,622	68,005	75,923	76,105	62,307	95,228	97,920	89,018
18	108,163	90,180	80,889	81,387	79,133	64,994	90,968	84,528	74,580	84,980	90,194	81,235
19	90,265	81,857	86,062	84,426	75,384	76,576	87,270	81,833	88,082	76,244	84,215	90,048
20	98,167	91,139	100,648	86,348	70,116	81,057	83,064	79,861	77,260	78,379	95,934	101,475
21	92,967	102,080	101,631	87,476	65,688	79,663	83,344	91,926	70,367	68,209	88,185	98,062
22	90,251	104,750	94,526	72,687	77,522	81,908	75,384	80,155	83,741	73,910	91,551	91,299
23	92,061	89,386	89,515	67,095	71,748	87,576	66,014	76,891	82,275	81,537	84,569	87,003
24	94,317	91,171	95,339	84,917	73,079	75,633	72,049	76,129	74,187	75,511	80,127	77,363
25	99,675	77,520	78,147	88,464	71,834	68,849	71,764	79,604	86,605	87,347	84,590	77,169
26	88,005	80,478	73,975	90,929	68,462	68,999	82,450	77,322	82,336	79,385	78,449	77,678
27	87,888	84,787	92,335	90,134	62,124	83,857	75,943	68,352	94,464	78,797	90,574	87,630
28	80,575	81,136	96,887	84,018	61,437	83,187	84,341	68,764	82,079	68,070	87,395	94,297
29	87,531		97,360	75,034	68,075	79,767	77,320	80,255	74,575	66,368	102,062	80,499
30	93,726		89,886	73,631	70,747	81,925	68,079	76,752	83,587	68,914	113,148	88,141
31	106,996		88,470		67,803		79,369	75,164		82,646		87,022
Net Generation	2,879,255	2,590,747	2,819,017	2,494,108	2,323,343	2,227,140	2,336,521	2,353,335	2,301,164	2,370,174	2,666,409	2,829,267

Open in Excel: Metered Electricity Generation December 2023 Table 4B (XLS 14KB)

Monthly Metered Electricity Generation by Time Period

The highest half-hourly periods for metered electricity generation in 2023 occurred between 4:30pm and 8:30pm when over 700,000 MWh was generated in each half-hour. The lowest half-hourly periods in 2023 were between 2:30am and 5am when less than 500,000 MWh were generated (See Table 5A).

	Coal	Gas	Renewable Hydro	Solar	Waste	Wind
00:00-00:30	4	29	5	0	2	59
00:30-01:00	4	28	5	0	2	59
01:00-01:30	4	28	5	0	2	59
01:30-02:00	4	28	5	0	2	59
02:00-02:30	4	28	5	0	2	59
02:30-03:00	4	28	5	0	2	58
03:00-03:30	4	28	5	0	3	58
03:30-04:00	4	28	5	0	3	58
04:00-04:30	4	28	5	0	3	59
04:30-05:00	4	28	5	0	3	58
05:00-05:30	4	29	5	0	2	58
05:30-06:00	4	30	5	0	2	57
06:00-06:30	4	32	4	0	2	56
06:30-07:00	4	33	4	0	2	55
07:00-07:30	4	35	4	0	2	53
07:30-08:00	4	36	4	0	2	52
08:00-08:30	4	36	4	0	2	51
08:30-09:00	4	36	4	0	2	51
09:00-09:30	4	36	4	0	2	51
09:30-10:00	4	36	4	1	2	50
10:00-10:30	4	36	4	1	2	50
10:30-11:00	4	35	4	1	2	51
11:00-11:30	4	35	4	2	2	51
11:30-12:00	4	34	4	2	2	52
12:00-12:30	4	33	4	2	2	53
12:30-13:00	4	33	4	2	2	53
13:00-13:30	4	33	4	2	2	53
13:30-14:00	4	33	4	2	2	54
14:00-14:30	4	33	4	1	2	54
14:30-15:00	4	33	4	1	2	54
15:00-15:30	4	33	4	0	2	54
15:30-16:00	4	34	4	0	2	54
16:00-16:30	4	33	4	0	2	53
16:30-17:00	4	33	4	0	2	52
17:00-17:30	4	32	4	0	2	52
17:30-18:00	4	32	4	0	2	53
18:00-18:30	4	32	4	0	2	54
18:30-19:00	4	32	4	0	2	54
19:00-19:30	4	32	4	0	2	55
19:30-20:00	4	32	4	0	2	55
20:00-20:30	4	32	4	0	2	56
20:30-21:00	4	32	4	0	2	56
21:00-21:30	4	32	4	0	2	56
21:30-22:00	4	31	4	0	2	57
22:00-22:30	4	30	4	0	2	58
22:30-23:00	4	29	5	0	2	59
23:00-23:30	4	29	5	0	2	59
23:30-24:00	4	28	5	0	2	60

Table 5A Metered Electricity Generation for All Primary Fuels by Time Period January-December 2023

Table 5A Metered Electricity Generation for All Primary Fuels by Time Period January-December 2023
Megawatt hours (MWh)
Time Period	January	February	March	April	May	June	July	August	September	October	November	December	Total
00:00-00:30	51,009	47,215	51,231	45,554	42,733	42,038	43,384	42,775	40,921	41,599	47,491	51,391	547,342
00:30-01:00	51,478	47,499	50,845	44,930	41,124	40,558	41,835	41,323	40,227	40,880	47,598	51,277	539,575
01:00-01:30	50,447	46,390	48,612	44,498	40,067	39,776	41,060	40,529	40,154	40,733	47,049	50,427	529,739
01:30-02:00	48,488	44,713	47,356	44,375	39,826	39,155	39,994	40,049	39,512	40,157	45,407	48,422	517,455
02:00-02:30	47,498	43,678	48,619	43,989	38,687	38,905	39,587	39,715	38,926	39,202	45,275	48,472	512,552
02:30-03:00	46,346	42,570	47,551	43,060	37,537	37,733	38,291	38,591	37,809	38,217	44,165	47,146	499,017
03:00-03:30	46,413	42,518	47,493	42,865	37,553	38,038	38,247	37,908	37,543	37,916	43,886	47,043	497,423
03:30-04:00	45,728	41,642	46,683	42,150	36,967	37,872	37,733	37,515	37,125	37,377	42,930	46,104	489,827
04:00-04:30	46,139	42,326	47,165	43,203	38,046	38,760	38,503	38,599	38,051	38,253	43,117	47,005	499,168
04:30-05:00	46,215	42,416	47,328	43,148	37,880	37,923	38,394	38,781	38,377	38,588	42,907	46,715	498,673
05:00-05:30	48,826	44,671	49,442	45,109	39,496	39,453	39,925	40,698	40,723	40,486	44,046	48,659	521,534
05:30-06:00	50,162	46,316	51,240	45,959	40,732	40,744	40,864	41,773	42,460	41,298	44,767	49,720	536,036
06:00-06:30	52,311	49,435	53,948	48,213	43,791	43,034	42,705	43,182	44,794	43,714	48,127	52,045	565,300
06:30-07:00	54,727	51,299	55,851	50,005	46,518	44,680	44,439	44,458	46,737	46,086	50,547	53,458	588,803
07:00-07:30	57,695	54,168	58,237	51,775	48,620	45,449	45,518	45,725	48,450	49,305	54,261	55,969	615,171
07:30-08:00	60,775	56,291	60,908	53,697	50,786	47,331	47,582	47,994	50,266	51,824	56,864	58,580	642,900
08:00-08:30	61,812	56,575	61,588	54,230	51,856	47,977	48,589	48,848	50,588	52,674	57,713	59,243	651,693
08:30-09:00	63,436	57,679	62,360	54,941	52,616	48,954	49,953	50,373	51,038	53,444	58,715	60,605	664,114
09:00-09:30	63,971	57,318	62,692	54,536	53,247	49,465	50,358	51,097	51,509	53,949	59,483	61,345	668,969
09:30-10:00	64,940	56,986	62,793	54,234	53,235	49,478	50,540	51,504	51,669	53,995	59,608	62,394	671,376
10:00-10:30	64,943	56,538	62,577	53,995	52,541	49,558	50,551	51,960	51,578	53,816	59,311	62,694	670,062
10:30-11:00	64,688	56,362	62,584	53,929	52,243	49,275	50,815	52,283	51,360	53,596	59,295	63,081	669,513
11:00-11:30	65,051	56,864	63,086	54,562	52,174	49,551	51,363	53,138	51,688	53,801	59,716	63,419	674,413
11:30-12:00	65,379	56,983	63,087	54,670	51,883	49,148	51,235	53,233	51,635	53,515	60,049	63,756	674,571
12:00-12:30	65,809	57,876	63,782	54,839	52,031	49,158	51,499	53,537	52,090	53,212	60,779	64,538	679,149
12:30-13:00	65,852	57,697	63,692	54,819	51,737	48,900	51,474	53,440	52,011	53,124	60,910	64,793	678,448
13:00-13:30	65,512	57,837	63,382	54,985	50,793	48,778	51,812	53,213	51,487	53,024	60,940	65,211	676,975
13:30-14:00	64,511	57,051	62,129	54,000	49,426	47,649	50,842	52,119	50,532	52,161	60,157	64,735	665,313
14:00-14:30	65,258	57,545	62,437	53,934	49,482	48,062	51,142	52,269	50,808	52,469	60,877	65,042	669,326
14:30-15:00	64,916	57,363	62,178	53,444	48,881	47,638	50,866	51,848	50,315	52,137	60,445	64,532	664,564
15:00-15:30	64,865	57,509	62,211	54,037	49,457	48,565	51,833	52,822	51,212	52,978	60,702	65,047	671,237
15:30-16:00	66,255	58,274	62,867	54,521	50,354	49,060	52,354	53,254	51,571	53,464	61,488	66,379	679,842
16:00-16:30	67,978	58,925	63,887	55,408	51,913	50,005	53,695	54,761	52,988	55,171	63,227	67,905	695,862
16:30-17:00	71,627	61,022	65,943	57,505	54,033	51,547	55,408	56,036	54,040	56,984	66,524	70,312	720,979
17:00-17:30	73,171	62,486	67,273	59,510	55,342	52,734	57,295	57,436	56,109	58,644	68,189	71,015	739,203
17:30-18:00	73,791	65,046	68,506	60,774	56,005	53,432	58,332	58,464	56,309	59,483	68,140	70,544	748,824
18:00-18:30	73,152	65,127	68,749	61,249	56,375	53,891	59,147	59,090	56,559	59,786	67,308	69,905	750,338
18:30-19:00	70,970	64,136	69,151	60,465	55,880	53,438	58,412	58,192	55,693	59,963	65,929	68,169	740,397
19:00-19:30	70,524	63,794	68,788	59,702	55,632	52,784	58,557	57,834	55,296	59,233	64,939	67,172	734,255
19:30-20:00	68,099	61,765	66,768	58,643	54,626	51,470	57,088	56,396	55,011	57,396	63,055	65,309	715,625
20:00-20:30	66,089	60,510	65,588	57,832	54,205	50,708	55,923	55,415	53,661	55,420	61,237	64,067	700,653
20:30-21:00	63,737	58,430	63,260	57,308	53,389	49,588	54,462	54,766	52,156	53,395	59,153	62,313	681,959
21:00-21:30	62,689	57,242	61,765	57,039	53,677	48,933	53,581	53,895	50,493	52,013	57,330	61,110	669,767
21:30-22:00	59,420	54,272	58,496	53,745	52,449	47,255	51,855	51,532	47,485	49,397	54,468	58,175	638,549
22:00-22:30	57,244	52,330	56,724	52,060	51,290	47,047	50,898	49,699	45,857	47,215	51,873	56,390	618,629
22:30-23:00	53,974	49,615	53,541	48,565	47,387	44,998	48,093	46,508	43,215	44,384	49,356	53,288	582,923
23:00-23:30	53,464	48,879	52,922	46,551	45,177	43,847	46,068	44,854	42,039	42,822	49,040	52,884	568,546
23:30-24:00	51,871	47,564	51,701	45,547	43,643	42,802	44,420	43,903	41,087	41,874	48,017	51,463	553,891
Net Generation	2,879,255	2,590,747	2,819,017	2,494,108	2,323,343	2,227,140	2,336,521	2,353,335	2,301,164	2,370,174	2,666,409	2,829,267	30,190,480

Open in Excel: Metered Electricity Generation December 2023 Table 5A (XLS 16KB)

Wind Generation is Highest in Winter

There were five months in 2023 when the amount of metered electricity generated from Wind exceeded one million MWh (See Table 5B and Figure 4). December 2023 was the month with the highest amount of Wind generated electricity at 1.5 million MWh. June 2023 was the month with the lowest amount of electricity generated by Wind at 0.6 million MWh.

	2020	2021	2022	2023
January	1260839	986100	1023025	1226819
February	1589648	1403381	1549488	1121321
March	1239618	1004358	963955	1139129
April	607100	672878	859288	944095
May	819394	773168	869679	579223
June	775125	627494	741540	552350
July	810722	317264	527659	887836
August	669058	569234	521486	895663
September	804480	540086	654946	859628
October	1192174	961004	1262786	844081
November	1103330	965880	1349075	1147793
December	1295945	1268798	1047832	1547436

Table 5B Metered Electricity Generation for Wind by Time Period January-December 2023

Solar Generation is Highest in June

In 2023, generation by Solar was highest in June at 68,120 MWh (See Table 5C) followed by May (65,690 MWh) and July (63,630 MWh). January 2023 had the lowest amount of metered electricity generated by Solar at 4,140 MWh.

Table 5C Metered Electricity Generation for Solar by Time Period January-December 2023

Table 5C Metered Electricity Generation for Solar by Time Period January-December 2023
Megawatt hours (MWh)
Time Period	January	February	March	April	May	June	July	August	September	October	November	December	Total
00:00-00:30	0	0	0	0	0	0	0	0	0	0	0	0	0
00:30-01:00	0	0	0	0	0	0	0	0	0	0	0	0	0
01:00-01:30	0	0	0	0	0	0	0	0	0	0	0	0	0
01:30-02:00	0	0	0	0	0	0	0	0	0	0	0	0	0
02:00-02:30	0	0	0	0	0	0	0	0	0	0	0	0	0
02:30-03:00	0	0	0	0	0	0	0	0	0	0	0	0	0
03:00-03:30	0	0	0	0	0	0	0	0	0	0	0	0	0
03:30-04:00	0	0	0	0	0	0	0	0	0	0	0	0	0
04:00-04:30	0	0	0	0	0	0	0	0	0	0	0	0	0
04:30-05:00	0	0	0	0	0	1	0	0	0	0	0	0	1
05:00-05:30	0	0	0	0	6	33	9	0	0	0	1	0	49
05:30-06:00	0	0	0	0	54	137	68	3	0	0	4	0	266
06:00-06:30	0	0	0	6	170	302	210	44	0	2	10	0	745
06:30-07:00	0	0	14	49	378	540	426	175	6	5	18	0	1,612
07:00-07:30	0	0	79	154	687	872	715	409	70	13	31	0	3,028
07:30-08:00	0	12	207	341	1,044	1,253	1,120	746	262	52	63	0	5,099
08:00-08:30	1	72	360	610	1,503	1,702	1,601	1,232	571	213	207	2	8,074
08:30-09:00	20	183	514	895	1,983	2,139	2,024	1,687	989	532	485	51	11,503
09:00-09:30	73	332	697	1,237	2,344	2,446	2,413	2,131	1,455	947	832	205	15,112
09:30-10:00	147	482	868	1,516	2,656	2,664	2,598	2,571	1,930	1,427	1,203	432	18,494
10:00-10:30	234	617	955	1,706	2,919	2,849	2,739	2,813	2,333	1,953	1,546	659	21,321
10:30-11:00	315	739	1,039	1,840	3,076	2,998	2,815	3,042	2,574	2,390	1,852	835	23,514
11:00-11:30	373	797	1,128	1,920	3,234	3,094	3,058	3,150	2,646	2,691	2,042	1,043	25,177
11:30-12:00	417	858	1,152	1,982	3,349	3,245	3,061	3,074	2,669	2,783	2,179	1,172	25,941
12:00-12:30	419	867	1,190	2,075	3,271	3,283	3,122	3,185	2,743	2,867	2,176	1,256	26,455
12:30-13:00	430	845	1,157	2,091	3,363	3,285	3,253	3,227	2,748	2,901	2,167	1,278	26,746
13:00-13:30	409	841	1,149	2,123	3,429	3,344	3,292	3,204	2,767	2,871	1,986	1,156	26,572
13:30-14:00	380	815	1,119	2,083	3,455	3,349	3,247	3,160	2,740	2,763	1,762	980	25,853
14:00-14:30	331	752	1,024	2,091	3,505	3,293	3,147	3,170	2,668	2,498	1,499	759	24,737
14:30-15:00	256	644	991	2,118	3,463	3,226	3,042	3,064	2,601	2,352	1,123	537	23,418
15:00-15:30	182	498	918	2,017	3,386	3,126	3,055	2,985	2,524	2,098	723	317	21,829
15:30-16:00	104	370	775	1,944	3,234	3,120	2,947	2,894	2,368	1,770	393	106	20,024
16:00-16:30	39	253	644	1,757	2,959	3,021	2,750	2,720	2,101	1,389	152	9	17,793
16:30-17:00	8	129	503	1,510	2,771	2,920	2,556	2,562	1,894	995	48	0	15,895
17:00-17:30	0	41	333	1,352	2,396	2,679	2,430	2,240	1,521	628	32	0	13,653
17:30-18:00	0	5	198	1,116	2,143	2,442	2,094	1,824	1,165	333	24	0	11,343
18:00-18:30	0	0	96	801	1,748	2,089	1,818	1,496	762	128	14	0	8,952
18:30-19:00	0	0	41	538	1,327	1,677	1,445	1,065	400	36	8	0	6,536
19:00-19:30	0	0	17	304	883	1,240	1,063	717	155	12	3	0	4,394
19:30-20:00	0	0	3	134	533	807	726	390	34	6	1	0	2,635
20:00-20:30	0	0	0	34	281	496	460	158	3	2	0	0	1,435
20:30-21:00	0	0	0	2	113	298	238	39	1	1	0	0	691
21:00-21:30	0	0	0	0	23	128	82	2	0	0	0	0	236
21:30-22:00	0	0	0	0	1	22	8	0	0	0	0	0	31
22:00-22:30	0	0	0	0	0	0	0	0	0	0	0	0	0
22:30-23:00	0	0	0	0	0	0	0	0	0	0	0	0	0
23:00-23:30	0	0	0	0	0	0	0	0	0	0	0	0	0
23:30-24:00	0	0	0	0	0	0	0	0	0	0	0	0	0
Net Generation	4,140	10,150	17,171	36,344	65,690	68,120	63,630	59,179	44,701	36,656	22,584	10,798	439,162

Open in Excel: Metered Electricity Generation December 2023 Table 5C (XLS 15KB)

Renewable Hydro Generation is Highest in Winter

There were 121,933 MWh generated from Renewable Hydro in December 2023 (See Table 5D) which was the highest month in 2023. The next highest month was January 2023 when there were 120,910 MWh generated.

	Renewable Hydro	Solar	Waste
January	120910	4140	53347
February	54962	10150	38170
March	81583	17171	47352
April	85664	36344	46855
May	40225	65690	55514
June	7704	68120	43810
July	59908	63630	37067
August	89005	59179	56847
September	55325	44701	52547
October	101217	36656	56588
November	114791	22584	48877
December	121933	10798	56534

Table 5D Metered Electricity Generation for Renewable Hydro by Time Period January-December 2023

Table 5D Metered Electricity Generation for Renewable Hydro by Time Period January-December 2023
Megawatt hours (MWh)
Time Period	January	February	March	April	May	June	July	August	September	October	November	December	Total
00:00-00:30	2,403	859	1,444	1,691	472	32	1,041	1,741	1,083	1,985	2,248	2,322	17,321
00:30-01:00	2,406	834	1,435	1,642	434	31	1,038	1,722	1,052	1,976	2,241	2,320	17,131
01:00-01:30	2,398	831	1,354	1,616	417	30	1,042	1,713	1,047	2,046	2,237	2,303	17,034
01:30-02:00	2,387	829	1,348	1,613	409	26	1,035	1,714	1,058	2,044	2,229	2,293	16,985
02:00-02:30	2,393	833	1,433	1,608	406	20	1,041	1,713	1,056	1,983	2,238	2,306	17,030
02:30-03:00	2,393	825	1,428	1,603	402	19	1,037	1,703	1,053	1,972	2,232	2,298	16,965
03:00-03:30	2,388	826	1,436	1,611	405	19	1,041	1,704	1,058	1,970	2,239	2,306	17,005
03:30-04:00	2,376	823	1,431	1,603	402	19	1,036	1,703	1,049	1,968	2,232	2,297	16,940
04:00-04:30	2,382	827	1,425	1,618	416	20	1,041	1,709	1,046	1,975	2,231	2,309	17,000
04:30-05:00	2,381	827	1,424	1,617	475	20	1,039	1,702	1,043	1,974	2,227	2,303	17,031
05:00-05:30	2,374	829	1,427	1,629	534	20	1,041	1,710	1,049	1,978	2,231	2,321	17,143
05:30-06:00	2,368	829	1,427	1,622	574	23	1,041	1,703	1,043	1,970	2,230	2,314	17,144
06:00-06:30	2,372	859	1,422	1,629	615	58	1,041	1,700	1,047	1,979	2,232	2,337	17,291
06:30-07:00	2,371	889	1,425	1,631	594	66	1,052	1,693	1,065	1,987	2,228	2,358	17,358
07:00-07:30	2,384	936	1,455	1,675	616	94	1,087	1,703	1,078	2,004	2,247	2,385	17,663
07:30-08:00	2,408	987	1,482	1,721	639	118	1,106	1,720	1,085	2,033	2,296	2,412	18,006
08:00-08:30	2,482	1,116	1,564	1,744	640	131	1,214	1,758	1,135	2,121	2,374	2,446	18,726
08:30-09:00	2,518	1,168	1,602	1,766	686	155	1,303	1,814	1,134	2,162	2,394	2,479	19,181
09:00-09:30	2,571	1,197	1,610	1,783	736	191	1,319	1,863	1,157	2,201	2,369	2,534	19,531
09:30-10:00	2,588	1,209	1,617	1,786	818	252	1,350	1,881	1,161	2,218	2,375	2,565	19,820
10:00-10:30	2,583	1,243	1,638	1,770	826	246	1,357	1,898	1,154	2,226	2,385	2,576	19,901
10:30-11:00	2,589	1,274	1,659	1,756	863	263	1,398	1,929	1,157	2,237	2,362	2,575	20,063
11:00-11:30	2,600	1,294	1,693	1,770	891	266	1,405	1,954	1,179	2,236	2,366	2,573	20,225
11:30-12:00	2,598	1,275	1,718	1,782	930	267	1,416	1,971	1,171	2,234	2,374	2,591	20,326
12:00-12:30	2,594	1,304	1,745	1,813	967	277	1,433	1,983	1,181	2,216	2,397	2,618	20,528
12:30-13:00	2,599	1,294	1,786	1,817	1,005	284	1,455	2,007	1,182	2,174	2,400	2,640	20,645
13:00-13:30	2,559	1,308	1,833	1,811	1,038	273	1,443	2,020	1,170	2,180	2,404	2,634	20,673
13:30-14:00	2,550	1,305	1,870	1,802	1,049	256	1,415	2,015	1,167	2,169	2,402	2,643	20,641
14:00-14:30	2,533	1,317	1,912	1,786	1,060	222	1,405	2,002	1,194	2,170	2,353	2,646	20,603
14:30-15:00	2,522	1,328	1,947	1,780	1,053	208	1,404	2,004	1,209	2,155	2,338	2,634	20,583
15:00-15:30	2,573	1,361	1,996	1,795	1,065	200	1,410	2,002	1,236	2,129	2,372	2,637	20,775
15:30-16:00	2,609	1,404	2,003	1,792	1,075	198	1,442	2,015	1,252	2,125	2,373	2,644	20,931
16:00-16:30	2,679	1,498	2,036	1,832	1,187	228	1,480	2,031	1,271	2,144	2,428	2,778	21,591
16:30-17:00	2,707	1,539	2,069	1,860	1,248	258	1,459	2,041	1,284	2,152	2,477	2,801	21,896
17:00-17:30	2,786	1,617	2,142	1,993	1,324	302	1,432	2,053	1,306	2,203	2,576	2,872	22,605
17:30-18:00	2,798	1,657	2,179	2,026	1,328	306	1,430	2,063	1,324	2,211	2,609	2,896	22,828
18:00-18:30	2,786	1,660	2,176	2,055	1,354	316	1,427	2,032	1,312	2,203	2,651	2,901	22,871
18:30-19:00	2,763	1,647	2,179	2,070	1,358	317	1,399	1,997	1,294	2,208	2,656	2,895	22,783
19:00-19:30	2,757	1,570	2,103	2,075	1,301	291	1,393	1,959	1,267	2,196	2,677	2,862	22,452
19:30-20:00	2,728	1,482	2,017	2,065	1,292	280	1,379	1,923	1,250	2,190	2,672	2,837	22,115
20:00-20:30	2,633	1,292	1,941	2,037	1,258	258	1,361	1,885	1,198	2,164	2,625	2,758	21,410
20:30-21:00	2,599	1,186	1,895	1,982	1,209	239	1,317	1,851	1,172	2,144	2,618	2,705	20,916
21:00-21:30	2,474	1,107	1,811	1,954	1,083	190	1,253	1,828	1,140	2,136	2,591	2,624	20,191
21:30-22:00	2,427	1,034	1,737	1,925	962	140	1,189	1,823	1,145	2,129	2,569	2,572	19,652
22:00-22:30	2,390	975	1,648	1,867	885	93	1,129	1,792	1,162	2,129	2,518	2,519	19,105
22:30-23:00	2,374	920	1,574	1,821	772	72	1,106	1,774	1,156	2,095	2,491	2,498	18,654
23:00-23:30	2,383	890	1,554	1,731	642	64	1,111	1,752	1,155	2,061	2,405	2,417	18,166
23:30-24:00	2,372	852	1,532	1,689	508	50	1,114	1,734	1,138	2,054	2,369	2,379	17,791
Net Generation	120,910	54,962	81,583	85,664	40,225	7,704	59,908	89,005	55,325	101,217	114,791	121,933	933,228

Open in Excel: Metered Electricity Generation December 2023 Table 5D (XLS 16KB)

Renewable Energy Sources Proportion by Time Period and Month

The months with the lowest half-hourly proportion of renewable metered electricity at 23% were May 2023 between 7:30am and 8:30am and June between 8:30pm and 9:30pm (See Table 6A). The monthly half-hourly periods in 2023 with the highest proportion of renewable metered electricity generation were in December at 65% between 1am and 1:30am and between 11:30pm and midnight (See Table 6A).

	2020	2021	2022	2023
00:00-00:30	46	40	42	46
00:30-01:00	46	40	42	46
01:00-01:30	47	40	42	47
01:30-02:00	47	41	43	47
02:00-02:30	47	41	43	47
02:30-03:00	47	41	43	48
03:00-03:30	47	41	43	48
03:30-04:00	46	41	43	48
04:00-04:30	46	41	42	48
04:30-05:00	45	40	42	47
05:00-05:30	44	39	41	46
05:30-06:00	43	38	39	45
06:00-06:30	43	37	38	43
06:30-07:00	42	36	37	42
07:00-07:30	41	35	36	41
07:30-08:00	40	34	35	39
08:00-08:30	39	33	34	39
08:30-09:00	39	33	35	39
09:00-09:30	40	33	35	40
09:30-10:00	40	33	35	41
10:00-10:30	40	33	36	42
10:30-11:00	41	34	36	43
11:00-11:30	41	34	37	44
11:30-12:00	41	35	37	45
12:00-12:30	42	35	38	46
12:30-13:00	43	36	39	46
13:00-13:30	43	36	39	47
13:30-14:00	44	37	39	48
14:00-14:30	44	37	39	48
14:30-15:00	43	37	39	48
15:00-15:30	43	36	38	48
15:30-16:00	42	35	37	47
16:00-16:30	41	34	37	46
16:30-17:00	40	33	36	44
17:00-17:30	39	33	35	43
17:30-18:00	39	32	35	42
18:00-18:30	39	32	34	41
18:30-19:00	39	33	35	41
19:00-19:30	39	33	34	40
19:30-20:00	40	34	35	40
20:00-20:30	40	34	35	41
20:30-21:00	41	36	36	41
21:00-21:30	42	36	37	41
21:30-22:00	43	38	38	42
22:00-22:30	45	39	39	43
22:30-23:00	45	39	40	45
23:00-23:30	46	40	41	45
23:30-24:00	46	40	42	46

Table 6A: Renewable Energy Percentage of Metered Electricity Generation by Time Period January-December 2023

Table 6A Renewable Energy Percentage of Metered Electricity Generation by Time Period January-December 2023
%
Time Period	January	February	March	April	May	June	July	August	September	October	November	December
00:00-00:30	51	50	47	44	30	26	44	46	40	46	57	64
00:30-01:00	51	50	47	44	30	27	44	46	40	46	57	64
01:00-01:30	51	50	48	45	30	28	45	47	40	46	58	65
01:30-02:00	52	51	48	45	31	28	45	48	41	46	59	64
02:00-02:30	52	51	48	45	31	29	45	49	42	47	58	64
02:30-03:00	52	51	49	45	32	29	45	49	43	47	59	64
03:00-03:30	53	51	49	46	32	30	45	49	43	47	59	64
03:30-04:00	53	52	50	45	32	30	45	50	43	47	59	64
04:00-04:30	53	51	50	45	31	30	44	48	43	47	58	64
04:30-05:00	52	52	49	44	30	30	43	47	43	46	58	64
05:00-05:30	51	50	47	42	29	29	42	45	42	46	57	63
05:30-06:00	51	49	46	42	28	28	41	43	42	45	56	62
06:00-06:30	50	47	45	40	26	26	39	42	41	43	53	61
06:30-07:00	50	46	44	39	25	25	39	41	40	42	51	60
07:00-07:30	48	44	42	38	24	25	38	40	39	39	48	57
07:30-08:00	46	44	40	37	23	24	37	39	38	37	46	56
08:00-08:30	46	44	40	36	23	24	37	39	38	37	45	56
08:30-09:00	46	43	40	37	24	24	38	39	39	37	45	56
09:00-09:30	47	42	40	38	25	25	40	40	39	37	44	56
09:30-10:00	46	42	40	40	27	26	41	42	41	38	45	56
10:00-10:30	46	43	41	42	28	27	43	43	42	39	46	56
10:30-11:00	47	45	43	43	29	28	43	44	44	41	47	57
11:00-11:30	47	47	44	44	31	30	44	46	46	42	48	57
11:30-12:00	47	48	45	46	32	31	44	47	47	42	48	58
12:00-12:30	47	48	45	47	32	32	45	48	48	43	48	59
12:30-13:00	47	49	46	48	33	33	47	48	49	44	49	59
13:00-13:30	47	49	46	49	35	34	48	49	49	44	50	59
13:30-14:00	47	49	47	50	36	36	50	50	50	45	49	60
14:00-14:30	46	49	48	51	37	36	50	51	49	45	48	60
14:30-15:00	45	49	48	51	38	36	51	51	50	45	47	60
15:00-15:30	46	48	48	51	38	36	51	52	49	45	45	59
15:30-16:00	45	47	47	50	38	36	51	52	48	44	44	58
16:00-16:30	44	46	45	49	37	35	51	51	46	43	42	58
16:30-17:00	42	43	43	48	36	34	50	50	45	41	41	57
17:00-17:30	42	42	42	46	34	32	48	48	42	39	40	57
17:30-18:00	42	40	41	44	32	31	47	46	40	37	41	57
18:00-18:30	42	40	40	43	31	30	45	44	38	37	42	58
18:30-19:00	44	40	40	41	30	28	45	42	37	37	43	59
19:00-19:30	44	41	39	40	29	27	43	40	36	38	44	59
19:30-20:00	45	43	40	39	28	25	42	39	36	38	44	60
20:00-20:30	46	43	40	38	26	24	41	39	36	39	46	60
20:30-21:00	47	45	42	38	26	23	40	39	37	40	46	61
21:00-21:30	47	45	43	37	25	23	39	39	38	40	47	61
21:30-22:00	48	47	45	39	26	25	40	40	40	41	50	62
22:00-22:30	49	48	46	40	27	25	40	41	41	43	51	63
22:30-23:00	51	49	47	42	28	26	41	43	42	45	53	64
23:00-23:30	52	49	47	43	29	27	42	44	43	46	53	64
23:30-24:00	52	49	48	43	29	27	43	45	43	46	54	65
Renewable Energy includes Hydro, Solar, Wind and Other Renewables

Open in Excel: Metered Electricity Generation December 2023 Table 6A (XLS 15KB)

Gas Proportion by Time Period and Month

The percentage of metered electricity generated from Gas in December 2023 was highest at 36% between 7:30am and 10:30am (See Table 6B and Figure 3). The monthly half-hourly periods during 2023 with the highest share of metered electricity generation by Gas were between 7am and 8:30am in May at 67% (See Table 6B). The time period with the lowest Gas share was between 0:30am and 5am in December at 28%.

Table 6B Natural Gas Percentage of Metered Electricity Generation by Time Period January-December 2023

Table 6B Natural Gas Percentage of Metered Electricity Generation by Time Period January-December 2023
%
Time Period	January	February	March	April	May	June	July	August	September	October	November	December
00:00-00:30	40	41	44	48	61	64	51	48	52	44	35	29
00:30-01:00	41	42	45	48	60	63	50	47	52	44	35	28
01:00-01:30	40	42	44	47	60	62	49	47	51	44	34	28
01:30-02:00	39	41	43	47	60	62	49	45	50	43	33	28
02:00-02:30	39	40	43	47	59	62	49	45	49	43	33	28
02:30-03:00	39	40	43	46	58	61	48	44	48	43	33	28
03:00-03:30	39	40	42	46	58	60	48	44	48	43	33	28
03:30-04:00	39	39	41	46	58	60	49	44	48	42	33	28
04:00-04:30	38	40	41	47	59	61	49	45	48	43	33	28
04:30-05:00	39	39	42	47	59	60	50	46	48	43	34	28
05:00-05:30	40	41	44	49	61	62	52	49	49	45	34	29
05:30-06:00	40	42	45	50	62	63	53	50	49	45	35	30
06:00-06:30	41	45	46	52	64	64	55	52	50	47	39	32
06:30-07:00	42	46	47	53	66	65	55	52	51	49	41	33
07:00-07:30	43	47	48	53	67	65	56	53	52	51	44	35
07:30-08:00	44	47	50	54	67	65	56	53	52	52	46	36
08:00-08:30	44	47	50	54	67	64	55	54	52	52	46	36
08:30-09:00	44	48	50	53	66	64	54	53	52	52	46	36
09:00-09:30	44	48	50	52	65	63	53	53	51	52	46	36
09:30-10:00	44	48	50	51	64	63	52	51	50	51	46	36
10:00-10:30	44	47	49	50	63	63	52	50	49	51	46	36
10:30-11:00	44	46	48	49	62	62	51	49	48	50	45	35
11:00-11:30	44	45	47	48	61	61	51	48	47	49	45	35
11:30-12:00	44	44	46	47	60	60	50	48	45	49	44	34
12:00-12:30	44	43	46	45	60	59	49	47	44	48	44	33
12:30-13:00	45	43	46	45	59	58	48	46	43	48	44	33
13:00-13:30	45	43	45	44	57	57	47	46	43	47	43	33
13:30-14:00	44	43	44	43	56	56	45	44	43	46	43	33
14:00-14:30	45	43	44	42	55	56	44	44	43	47	45	33
14:30-15:00	46	43	44	42	54	55	44	43	43	46	46	33
15:00-15:30	45	44	44	42	54	55	43	43	43	47	47	33
15:30-16:00	45	45	44	43	54	55	44	43	44	48	48	34
16:00-16:30	46	46	46	44	55	56	44	44	46	49	48	33
16:30-17:00	46	47	47	45	57	57	45	44	47	50	48	33
17:00-17:30	45	47	47	46	59	58	46	45	48	50	47	32
17:30-18:00	45	47	47	47	60	58	47	47	49	50	46	32
18:00-18:30	45	47	47	47	61	59	46	48	50	49	45	32
18:30-19:00	44	47	47	48	62	59	47	49	51	49	45	32
19:00-19:30	44	47	47	49	64	61	47	50	51	48	46	32
19:30-20:00	45	47	47	50	64	62	48	51	52	48	45	32
20:00-20:30	44	47	48	51	65	63	49	51	52	49	45	32
20:30-21:00	44	47	47	51	66	64	51	51	51	49	45	32
21:00-21:30	44	47	47	52	66	65	52	52	52	50	45	32
21:30-22:00	43	45	46	52	66	66	53	52	51	49	43	31
22:00-22:30	42	45	46	51	65	66	54	52	51	48	41	30
22:30-23:00	40	43	44	50	63	64	53	51	49	46	39	29
23:00-23:30	39	43	44	49	62	64	52	49	49	45	39	29
23:30-24:00	39	43	43	49	62	63	51	49	49	44	38	28

Open in Excel: Metered Electricity Generation December 2023 Table 6B (XLS 14KB)

Wind Proportion by Time Period and Month

The monthly half-hourly period in 2023 with the highest share of metered electricity generation by Wind was in December between 11:30pm and midnight at 60% (See Table 6C and Figure 3). The time periods with the lowest Wind share in 2023 were between 8am and 9am in May at 18%.

Table 6C Wind Percentage of Metered Electricity Generation by Time Period January-December 2023

Table 6C Wind Percentage of Metered Electricity Generation by Time Period January-December 2023
%
Time Period	January	February	March	April	May	June	July	August	September	October	November	December
00:00-00:30	46	48	44	39	28	26	40	41	36	41	51	59
00:30-01:00	46	48	44	40	28	27	41	42	36	41	52	59
01:00-01:30	46	48	44	40	29	27	41	42	37	40	52	59
01:30-02:00	46	48	45	41	29	28	41	43	37	41	53	59
02:00-02:30	46	48	45	41	29	28	41	44	39	41	53	59
02:30-03:00	46	48	45	41	30	29	42	44	39	41	53	58
03:00-03:30	47	48	46	41	30	29	42	44	39	41	53	58
03:30-04:00	47	49	46	41	30	29	41	44	40	41	53	58
04:00-04:30	47	49	46	40	29	29	41	43	40	41	52	59
04:30-05:00	47	49	46	40	28	29	40	42	40	40	52	58
05:00-05:30	46	47	44	38	27	28	38	40	39	40	51	58
05:30-06:00	46	47	43	37	26	26	37	39	39	40	51	57
06:00-06:30	45	44	41	36	24	25	36	37	38	38	48	56
06:30-07:00	45	44	41	35	22	23	35	36	37	37	46	55
07:00-07:30	43	42	39	34	21	22	33	35	36	35	43	53
07:30-08:00	42	41	37	32	19	20	32	33	35	33	41	52
08:00-08:30	42	41	36	31	18	20	31	32	34	32	40	51
08:30-09:00	42	40	36	31	18	19	31	31	34	32	39	51
09:00-09:30	42	39	36	32	19	19	32	31	34	31	38	51
09:30-10:00	42	39	36	33	20	20	33	32	34	31	38	50
10:00-10:30	42	40	37	35	20	20	34	33	35	31	38	50
10:30-11:00	42	41	38	36	21	21	34	34	37	32	39	51
11:00-11:30	42	43	39	37	22	22	34	36	38	32	40	51
11:30-12:00	42	44	40	38	23	23	35	37	39	32	40	52
12:00-12:30	42	44	40	40	24	24	36	38	40	33	41	53
12:30-13:00	42	45	41	41	24	25	37	38	41	34	41	53
13:00-13:30	42	45	41	41	25	26	38	39	41	34	42	53
13:30-14:00	42	45	42	42	27	27	40	40	41	35	42	54
14:00-14:30	41	45	43	43	27	28	41	41	41	35	41	54
14:30-15:00	41	45	43	43	28	29	42	41	42	36	41	54
15:00-15:30	41	45	43	44	29	29	42	42	41	36	40	54
15:30-16:00	41	44	42	43	29	29	42	42	40	36	39	54
16:00-16:30	40	42	41	42	29	28	42	42	39	36	38	53
16:30-17:00	38	40	39	41	28	27	42	42	38	35	36	52
17:00-17:30	38	39	38	40	27	26	41	40	36	34	36	52
17:30-18:00	38	37	37	39	26	25	40	39	35	33	36	53
18:00-18:30	38	37	36	38	25	25	39	37	34	32	37	54
18:30-19:00	39	37	36	37	25	24	39	36	33	33	38	54
19:00-19:30	40	38	36	36	24	23	38	35	33	33	39	55
19:30-20:00	41	40	37	35	24	23	38	35	33	34	40	55
20:00-20:30	42	41	37	34	23	22	37	35	34	35	41	56
20:30-21:00	42	42	38	34	23	22	36	35	35	35	41	56
21:00-21:30	43	42	39	33	23	22	36	35	36	36	42	56
21:30-22:00	44	44	41	35	23	24	37	36	37	36	44	57
22:00-22:30	44	45	42	36	24	24	37	37	38	38	46	58
22:30-23:00	46	46	43	38	26	25	38	39	39	40	47	59
23:00-23:30	47	46	44	39	27	26	39	40	40	40	48	59
23:30-24:00	47	47	44	39	28	27	40	40	39	40	49	60

Open in Excel: Metered Electricity Generation December 2023 Table 6C (XLS 14KB)

Number of Generation Plants by Primary Fuel

There were around 500 metered electricity generation plants providing electricity to the national grid in 2023 (See Table 7). A power plant was calculated on the basis of its unique identification number. The unique ID is changed when a plant is sold so the same location could be counted more than once. Wind farms accounted for 62% of power plants in 2023. In 2022, 15 Solar farms were connected to the grid, and this increased to 21 in 2023.

Table 7 Number of Generation Plants by Primary Fuel Category 2020-2023

Exports and Imports of Electricity

In 2023, a total of 446,423 MWh were exported (See Table 8A). Imports increased considerably in 2023 to 3.7 million MWh - total Imports in 2022 were 1.6 million MWh (See Table 8B).

	Exports	Imports
2015	1078604	1751974
2016	1583011	871294
2017	1794910	1116408
2018	1649249	1621519
2019	1535038	2179579
2020	1913096	1761447
2021	863329	2450923
2022	1329732	1581628
2023	446423	3721175

Table 8A Exports of Electricity January 2015-December 2023

Table 8B Imports of Electricity January 2015-December 2023

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Table 1 Percentage of Metered Electricity Generation by Selected Primary Fuel Types 2020-2023
%
Year	Gas	Wind	Coal	Renewable Hydro	Waste	Solar
2020	47.9	38.8	2.3	3.0	1.8	0.0
2021	45.7	33.1	9.1	2.4	2.0	0.0
2022	47.5	35.1	7.8	2.2	1.8	0.1
2023	47.2	38.9	4.0	3.1	2.0	1.5

Table 2A Metered Electricity Generation by Primary Fuel Category December 2020-2023
Megawatt hours (MWh)
Primary Fuel	December 2020	December 2021	December 2022	December 2023
Coal	102,495	321,131	226,388	110,699
Oil	19,613	138,461	75,677	4,735
Biomass/Peat	106,365	69,365	56,029	32,243
Gas	1,229,475	1,075,864	1,404,173	903,480
Distillate	1,280	20,922	17,842	403
Waste	39,160	56,475	51,239	56,534
Wind	1,295,945	1,268,798	1,047,832	1,547,436
Solar	–	–	2,546	10,798
Renewable Hydro	135,952	96,685	85,937	121,933
Pumped Storage Hydro	22,263	26,229	26,953	24,192
Battery Storage	–	68	317	1,043
Other Renewable	16,256	16,050	14,683	14,573
Other Non-Renewable	2,113	2,894	1,648	1,197
Net Generation	2,970,917	3,092,942	3,011,263	2,829,267
– No Data

Table 2B Metered Electricity Generation by Primary Fuel Category January-December 2023
Megawatt hours (MWh)
Primary Fuel	January	February	March	April	May	June	July	August	September	October	November	December
Coal	147,131	81,292	125,702	88,624	82,746	99,594	86,099	75,747	119,761	93,273	105,822	110,699
Oil	9,262	49,830	14,811	0	0	0	0	0	0	20,042	9,938	4,735
Biomass/Peat	38,933	40,168	56,797	50,998	57,294	53,840	0	0	8,162	40,057	39,001	32,243
Gas	1,237,899	1,154,667	1,293,720	1,201,111	1,421,462	1,358,163	1,158,528	1,134,077	1,119,448	1,132,290	1,132,552	903,480
Distillate	1,290	435	797	635	119	3,091	160	467	282	570	881	403
Waste	53,347	38,170	47,352	46,855	55,514	43,810	37,067	56,847	52,547	56,588	48,877	56,534
Wind	1,226,819	1,121,321	1,139,129	944,095	579,223	552,350	887,836	895,663	859,628	844,081	1,147,793	1,547,436
Solar	4,140	10,150	17,171	36,344	65,690	68,120	63,630	59,179	44,701	36,656	22,584	10,798
Renewable Hydro	120,910	54,962	81,583	85,664	40,225	7,704	59,908	89,005	55,325	101,217	114,791	121,933
Pumped Storage Hydro	24,457	25,206	26,155	23,635	4,847	24,877	27,233	26,585	26,793	29,433	28,192	24,192
Battery Storage	312	335	583	634	544	471	552	896	315	494	1,035	1,043
Other Renewable	13,476	13,052	13,944	14,359	14,462	13,875	14,248	13,637	13,046	14,302	13,860	14,573
Other Non-Renewable	1,281	1,157	1,274	1,153	1,217	1,244	1,260	1,230	1,158	1,170	1,083	1,197
Net Generation	2,879,255	2,590,747	2,819,017	2,494,108	2,323,343	2,227,140	2,336,521	2,353,335	2,301,164	2,370,174	2,666,409	2,829,267

Table 3 Metered Electricity Generation by Primary Fuel Category 2020-2023
Megawatt hours (MWh)
Primary Fuel	2020	2021	2022	2023
Coal	723,440	2,780,312	2,520,081	1,216,491
Oil	246,292	1,066,341	633,848	108,620
Biomass/Peat	1,221,759	682,204	650,208	417,492
Gas	15,025,727	13,957,288	15,363,430	14,247,398
Distillate	19,304	93,036	86,242	9,131
Waste	554,258	602,480	590,602	593,508
Wind	12,167,433	10,089,646	11,370,761	11,745,373
Solar	–	–	20,120	439,162
Renewable Hydro	928,144	747,303	698,806	933,228
Pumped Storage Hydro	288,326	282,817	243,976	291,604
Battery Storage	37	251	2,780	7,213
Other Renewable	185,053	193,393	167,604	166,835
Other Non-Renewable	20,936	32,483	19,510	14,425
Net Generation	31,380,709	30,527,556	32,367,967	30,190,480
– No Data

Table 4A Metered Electricity Generation for All Primary Fuels by Day December 2020-2023
Megawatt hours (MWh)
Day	December 2020	December 2021	December 2022	December 2023
1	91,490	113,143	109,370	98,353
2	110,935	103,520	93,732	87,265
3	92,377	99,548	86,446	87,108
4	110,771	100,133	92,141	104,813
5	100,825	93,127	108,453	96,159
6	78,888	104,440	105,139	117,543
7	90,853	102,321	97,048	101,145
8	106,623	105,767	99,596	101,147
9	106,894	111,092	101,593	94,857
10	100,971	107,567	98,410	89,085
11	96,080	101,559	99,271	91,625
12	89,148	94,964	107,312	88,049
13	101,785	97,186	121,919	93,422
14	103,846	111,950	121,294	93,872
15	97,576	106,769	110,156	88,716
16	98,580	108,018	113,156	88,171
17	98,376	113,091	101,208	89,018
18	97,900	102,056	107,037	81,235
19	94,180	90,233	103,128	90,048
20	88,484	109,569	106,002	101,475
21	85,558	116,523	102,551	98,062
22	88,098	111,888	87,390	91,299
23	110,390	100,467	95,233	87,003
24	84,204	96,719	85,455	77,363
25	80,643	77,852	79,376	77,169
26	84,713	73,770	68,769	77,678
27	91,639	84,183	81,815	87,630
28	101,268	82,112	78,937	94,297
29	101,059	93,428	86,508	80,499
30	84,060	85,600	86,625	88,141
31	102,703	94,346	76,193	87,022
Net Generation	2,970,917	3,092,942	3,011,263	2,829,267

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Metered Electricity Generation December 2023